Unified Coverage Report :: Module Instance :: tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
98.18	100.00	90.91		100.00	100.00	100.00

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
98.18	100.00	90.91		100.00	100.00	100.00

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.87	95.65	86.36		83.33	95.24	93.75

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.87	95.65	86.36		83.33	95.24	93.75

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
90.78	95.65	86.36		83.33	95.24	93.33

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Module Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

Instance :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
89.48	93.48	86.36		83.33	90.48	93.75

Instance's subtree :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
89.48	93.48	86.36		83.33	90.48	93.75

Parent :

SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT	NAME
100.00	100.00						u_sysrst_ctrl_keyintr

Subtrees :

NAME	SCORE	LINE	COND	TOGGLE	FSM	BRANCH	ASSERT
no children

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
TOTAL		46	44	95.65
CONT_ASSIGN	60	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	30	93.75
ALWAYS	219	3	3	100.00

59                        end else begin : gen_trigger_active_high
60         1/1              assign trigger_active = (trigger_i == 1'b1);
           Tests:       T4 T6 T23 
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T6 T23 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T8 T13 T34 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T6 T23 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T6 T23 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T6 T23 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T6 T23 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T6 T23 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T6 T23 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T6 T23 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T6 T23 
148        1/1                    state_d = DebounceSt;
           Tests:       T8 T13 T34 
149        1/1                    cnt_en = 1'b1;
           Tests:       T8 T13 T34 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T8 T13 T34 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T8 T13 T34 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T8 T13 T34 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T8 T13 T54 
167        1/1                    if (trigger_active) begin
           Tests:       T8 T13 T54 
168        1/1                      state_d = DetectSt;
           Tests:       T8 T13 T54 
169                               end else begin
170        1/1                      state_d = IdleSt;
           Tests:       T197 T111 T112 
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T8 T13 T54 
182        1/1                  cnt_en = 1'b1;
           Tests:       T8 T13 T54 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T8 T13 T54 
186        0/1     ==>            state_d = IdleSt;
187        0/1     ==>            cnt_clr = 1'b1;
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T8 T13 T54 
191        1/1                      state_d = StableSt;
           Tests:       T8 T13 T54 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T8 T13 T54 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T8 T13 T54 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T8 T13 T54 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T8 T13 T54 
206        1/1                    state_d = IdleSt;
           Tests:       T8 T13 T54 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T8 T13 T54 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

	Total	Covered	Percent
Conditions	22	19	86.36
Logical	22	19	86.36
Non-Logical	0	0
Event	0	0

 LINE       60
 EXPRESSION (trigger_i == 1'b1)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T4,T6,T23

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T5,T6
1	0	Covered	T4,T6,T23
1	1	Covered	T4,T6,T23

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T34

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T34

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T54

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T8,T13,T34
1	0	Covered	T4,T6,T23
1	1	Covered	T8,T13,T34

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T8,T13,T54
0	1	Not Covered
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T8,T13,T54
0	1	Covered	T8,T13,T54
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T8,T13,T54
1	-	Covered	T8,T13,T54

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	5	83.33
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T8,T13,T34
DetectSt	168	Covered	T8,T13,T54
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T8,T13,T54

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T8,T13,T54
DebounceSt->IdleSt	163	Covered	T34,T36,T49
DetectSt->IdleSt	186	Not Covered
DetectSt->StableSt	191	Covered	T8,T13,T54
IdleSt->DebounceSt	148	Covered	T8,T13,T34
StableSt->IdleSt	206	Covered	T8,T13,T54

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
Branches		21	20	95.24
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	9	90.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T8,T13,T34
0	1	Covered	T8,T13,T34
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T8,T13,T54
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T8,T13,T34
IdleSt	0	-	-	-	-	-	-	Covered	T4,T6,T23
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T8,T13,T54
DebounceSt	-	0	1	0	-	-	-	Covered	T197,T111,T112
DebounceSt	-	0	0	-	-	-	-	Covered	T8,T13,T34
DetectSt	-	-	-	-	1	-	-	Not Covered
DetectSt	-	-	-	-	0	1	-	Covered	T8,T13,T54
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T8,T13,T54
StableSt	-	-	-	-	-	-	0	Covered	T8,T13,T54
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_l2h

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	15	15	100.00	14	93.33
Cover properties	0	0		0
Cover sequences	0	0		0
Total	15	15	100.00	14	93.33

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	45	0	0
CntIncr_A	8302401	1197	0	0
CntNoWrap_A	8302401	7838061	0	0
DetectStDropOut_A	8302401	0	0	0
DetectedOut_A	8302401	1503	0	0
DetectedPulseOut_A	8302401	19	0	0
DisabledIdleSt_A	8302401	7829550	0	0
DisabledNoDetection_A	8302401	7831423	0	0
EnterDebounceSt_A	8302401	27	0	0
EnterDetectSt_A	8302401	19	0	0
EnterStableSt_A	8302401	19	0	0
PulseIsPulse_A	8302401	19	0	0
StayInStableSt	8302401	1474	0	0
gen_high_level_sva.HighLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	9	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	45	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	4	0	0
T32	604	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	2	0	0
T53	0	4	0	0
T54	0	2	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	2	0	0
T177	423	0	0	0
T197	0	2	0	0
T198	0	2	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1197	0	0
T8	590	16	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	26	0	0
T32	604	0	0	0
T34	0	13	0	0
T36	0	20	0	0
T49	0	112	0	0
T53	0	168	0	0
T54	0	22	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	20	0	0
T177	423	0	0	0
T197	0	34	0	0
T198	0	53	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838061	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1503	0	0
T8	590	44	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	92	0	0
T32	604	0	0	0
T49	0	40	0	0
T53	0	209	0	0
T54	0	41	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	39	0	0
T169	0	42	0	0
T170	0	39	0	0
T177	423	0	0	0
T198	0	258	0	0
T199	0	2	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	19	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	1	0	0
T53	0	2	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	1	0	0
T169	0	1	0	0
T170	0	1	0	0
T177	423	0	0	0
T198	0	1	0	0
T199	0	1	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7829550	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7831423	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	27	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	2	0	0
T53	0	2	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	1	0	0
T177	423	0	0	0
T197	0	2	0	0
T198	0	1	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	19	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	1	0	0
T53	0	2	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	1	0	0
T169	0	1	0	0
T170	0	1	0	0
T177	423	0	0	0
T198	0	1	0	0
T199	0	1	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	19	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	1	0	0
T53	0	2	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	1	0	0
T169	0	1	0	0
T170	0	1	0	0
T177	423	0	0	0
T198	0	1	0	0
T199	0	1	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	19	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	1	0	0
T53	0	2	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	1	0	0
T169	0	1	0	0
T170	0	1	0	0
T177	423	0	0	0
T198	0	1	0	0
T199	0	1	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1474	0	0
T8	590	43	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	90	0	0
T32	604	0	0	0
T49	0	39	0	0
T53	0	206	0	0
T54	0	40	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T166	0	37	0	0
T169	0	40	0	0
T170	0	37	0	0
T177	423	0	0	0
T198	0	256	0	0
T199	0	1	0	0

gen_high_level_sva.HighLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	9	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T110	0	1	0	0
T174	0	1	0	0
T177	423	0	0	0
T199	0	1	0	0

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
TOTAL		46	46	100.00
CONT_ASSIGN	58	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	32	100.00
ALWAYS	219	3	3	100.00

57                        if (EventType inside {LowLevel, EdgeToLow}) begin : gen_trigger_active_low
58         1/1              assign trigger_active = (trigger_i == 1'b0);
           Tests:       T4 T6 T23 
59                        end else begin : gen_trigger_active_high
60                          assign trigger_active = (trigger_i == 1'b1);
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T5 T6 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T8 T13 T34 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T5 T6 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T5 T6 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T5 T6 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T5 T6 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T5 T6 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T5 T6 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T5 T6 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T5 T6 
148        1/1                    state_d = DebounceSt;
           Tests:       T8 T13 T34 
149        1/1                    cnt_en = 1'b1;
           Tests:       T8 T13 T34 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T8 T13 T34 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T8 T13 T34 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T8 T13 T34 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T8 T13 T50 
167        1/1                    if (trigger_active) begin
           Tests:       T8 T13 T50 
168        1/1                      state_d = DetectSt;
           Tests:       T8 T13 T50 
169                               end else begin
170        1/1                      state_d = IdleSt;
           Tests:       T200 T201 
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T8 T13 T50 
182        1/1                  cnt_en = 1'b1;
           Tests:       T8 T13 T50 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T8 T13 T50 
186        1/1                    state_d = IdleSt;
           Tests:       T202 
187        1/1                    cnt_clr = 1'b1;
           Tests:       T202 
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T8 T13 T50 
191        1/1                      state_d = StableSt;
           Tests:       T8 T13 T50 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T8 T13 T50 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T8 T13 T50 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T8 T13 T50 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T8 T13 T50 
206        1/1                    state_d = IdleSt;
           Tests:       T8 T13 T49 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T8 T13 T50 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

	Total	Covered	Percent
Conditions	22	20	90.91
Logical	22	20	90.91
Non-Logical	0	0
Event	0	0

 LINE       58
 EXPRESSION (trigger_i == 1'b0)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T6,T23
1	Covered	T4,T5,T6

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T6,T23
1	0	Covered	T4,T5,T6
1	1	Covered	T4,T5,T6

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T34

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T34

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T8,T13,T50

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T8,T13,T34
1	0	Covered	T4,T6,T23
1	1	Covered	T8,T13,T34

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T8,T13,T50
0	1	Covered	T202
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T8,T13,T50
0	1	Covered	T8,T13,T49
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T8,T13,T50
1	-	Covered	T8,T13,T49

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	6	100.00
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T8,T13,T34
DetectSt	168	Covered	T8,T13,T50
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T8,T13,T50

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T8,T13,T50
DebounceSt->IdleSt	163	Covered	T34,T36,T200
DetectSt->IdleSt	186	Covered	T202
DetectSt->StableSt	191	Covered	T8,T13,T50
IdleSt->DebounceSt	148	Covered	T8,T13,T34
StableSt->IdleSt	206	Covered	T8,T13,T49

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
Branches		21	21	100.00
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	10	100.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T8,T13,T34
0	1	Covered	T8,T13,T34
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T8,T13,T50
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T8,T13,T34
IdleSt	0	-	-	-	-	-	-	Covered	T4,T5,T6
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T8,T13,T50
DebounceSt	-	0	1	0	-	-	-	Covered	T200,T201
DebounceSt	-	0	0	-	-	-	-	Covered	T8,T13,T34
DetectSt	-	-	-	-	1	-	-	Covered	T202
DetectSt	-	-	-	-	0	1	-	Covered	T8,T13,T50
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T8,T13,T49
StableSt	-	-	-	-	-	-	0	Covered	T8,T13,T50
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[1].u_sysrst_ctrl_detect_h2l

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	16	16	100.00	16	100.00
Cover properties	0	0		0
Cover sequences	0	0		0
Total	16	16	100.00	16	100.00

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	86	0	0
CntIncr_A	8302401	37634	0	0
CntNoWrap_A	8302401	7838020	0	0
DetectStDropOut_A	8302401	1	0	0
DetectedOut_A	8302401	53791	0	0
DetectedPulseOut_A	8302401	40	0	0
DisabledIdleSt_A	8302401	7549696	0	0
DisabledNoDetection_A	8302401	7551562	0	0
EnterDebounceSt_A	8302401	46	0	0
EnterDetectSt_A	8302401	41	0	0
EnterStableSt_A	8302401	40	0	0
PulseIsPulse_A	8302401	40	0	0
StayInStableSt	8302401	53735	0	0
gen_edge_to_low_event_sva.EdgeToLowEvent_A	8302401	1890	0	0
gen_low_level_sva.LowLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	24	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	86	0	0
T8	590	4	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	6	0	0
T32	604	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	4	0	0
T50	0	2	0	0
T56	0	6	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T175	0	2	0	0
T177	423	0	0	0
T203	0	2	0	0
T204	0	2	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	37634	0	0
T8	590	32	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	39	0	0
T32	604	0	0	0
T34	0	13	0	0
T36	0	20	0	0
T49	0	160	0	0
T50	0	16	0	0
T56	0	294	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T175	0	32	0	0
T177	423	0	0	0
T203	0	10	0	0
T204	0	76	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838020	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1	0	0
T202	34537	1	0	0
T205	6183	0	0	0
T206	5693	0	0	0
T207	6473	0	0	0
T208	7789	0	0	0
T209	4471	0	0	0
T210	4519	0	0	0
T211	5873	0	0	0
T212	12364	0	0	0
T213	10876	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	53791	0	0
T8	590	87	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	55	0	0
T32	604	0	0	0
T49	0	20	0	0
T50	0	50	0	0
T56	0	124	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	41	0	0
T168	0	221	0	0
T175	0	160	0	0
T177	423	0	0	0
T203	0	55	0	0
T204	0	311	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	40	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	3	0	0
T32	604	0	0	0
T49	0	2	0	0
T50	0	1	0	0
T56	0	3	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T175	0	1	0	0
T177	423	0	0	0
T203	0	1	0	0
T204	0	1	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7549696	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7551562	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	46	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	3	0	0
T32	604	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	2	0	0
T50	0	1	0	0
T56	0	3	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T175	0	1	0	0
T177	423	0	0	0
T203	0	1	0	0
T204	0	1	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	41	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	3	0	0
T32	604	0	0	0
T49	0	2	0	0
T50	0	1	0	0
T56	0	3	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T175	0	1	0	0
T177	423	0	0	0
T203	0	1	0	0
T204	0	1	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	40	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	3	0	0
T32	604	0	0	0
T49	0	2	0	0
T50	0	1	0	0
T56	0	3	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T175	0	1	0	0
T177	423	0	0	0
T203	0	1	0	0
T204	0	1	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	40	0	0
T8	590	2	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	3	0	0
T32	604	0	0	0
T49	0	2	0	0
T50	0	1	0	0
T56	0	3	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T175	0	1	0	0
T177	423	0	0	0
T203	0	1	0	0
T204	0	1	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	53735	0	0
T8	590	84	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	51	0	0
T32	604	0	0	0
T49	0	18	0	0
T50	0	48	0	0
T56	0	120	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	40	0	0
T168	0	219	0	0
T175	0	158	0	0
T177	423	0	0	0
T203	0	53	0	0
T204	0	309	0	0

gen_edge_to_low_event_sva.EdgeToLowEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1890	0	0
T1	509	0	0	0
T2	655	2	0	0
T4	497	5	0	0
T5	415	0	0	0
T6	423	2	0	0
T7	0	2	0	0
T14	424	1	0	0
T15	443	0	0	0
T16	501	6	0	0
T17	475	0	0	0
T18	0	5	0	0
T19	0	6	0	0
T23	756	0	0	0
T29	0	5	0	0
T31	0	5	0	0

gen_low_level_sva.LowLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	24	0	0
T8	590	1	0	0
T9	489	0	0	0
T10	1410	0	0	0
T13	0	2	0	0
T32	604	0	0	0
T49	0	2	0	0
T56	0	2	0	0
T69	502	0	0	0
T70	404	0	0	0
T84	586	0	0	0
T85	753	0	0	0
T91	522	0	0	0
T167	0	1	0	0
T170	0	1	0	0
T177	423	0	0	0
T187	0	2	0	0
T199	0	1	0	0
T214	0	1	0	0
T215	0	1	0	0

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
TOTAL		46	44	95.65
CONT_ASSIGN	60	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	30	93.75
ALWAYS	219	3	3	100.00

59                        end else begin : gen_trigger_active_high
60         1/1              assign trigger_active = (trigger_i == 1'b1);
           Tests:       T4 T5 T6 
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T5 T6 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T2 T8 T34 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T5 T6 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T5 T6 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T5 T6 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T5 T6 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T5 T6 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T5 T6 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T5 T6 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T5 T6 
148        1/1                    state_d = DebounceSt;
           Tests:       T2 T8 T34 
149        1/1                    cnt_en = 1'b1;
           Tests:       T2 T8 T34 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T2 T8 T34 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T2 T8 T34 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T2 T8 T34 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T2 T8 T54 
167        1/1                    if (trigger_active) begin
           Tests:       T2 T8 T54 
168        1/1                      state_d = DetectSt;
           Tests:       T2 T8 T54 
169                               end else begin
170        1/1                      state_d = IdleSt;
           Tests:       T176 T171 T110 
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T2 T8 T54 
182        1/1                  cnt_en = 1'b1;
           Tests:       T2 T8 T54 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T2 T8 T54 
186        0/1     ==>            state_d = IdleSt;
187        0/1     ==>            cnt_clr = 1'b1;
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T2 T8 T54 
191        1/1                      state_d = StableSt;
           Tests:       T2 T8 T54 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T2 T8 T54 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T2 T8 T54 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T2 T8 T54 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T2 T8 T54 
206        1/1                    state_d = IdleSt;
           Tests:       T2 T8 T54 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T2 T8 T54 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

	Total	Covered	Percent
Conditions	22	19	86.36
Logical	22	19	86.36
Non-Logical	0	0
Event	0	0

 LINE       60
 EXPRESSION (trigger_i == 1'b1)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T4,T5,T6

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T5,T6
1	0	Covered	T4,T5,T6
1	1	Covered	T4,T5,T6

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T8,T34

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T8,T34

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T8,T54

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T2,T8,T34
1	0	Covered	T4,T5,T6
1	1	Covered	T2,T8,T34

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T2,T8,T54
0	1	Not Covered
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T2,T8,T54
0	1	Covered	T2,T8,T54
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T2,T8,T54
1	-	Covered	T2,T8,T54

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	5	83.33
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T2,T8,T34
DetectSt	168	Covered	T2,T8,T54
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T2,T8,T54

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T2,T8,T54
DebounceSt->IdleSt	163	Covered	T34,T36,T176
DetectSt->IdleSt	186	Not Covered
DetectSt->StableSt	191	Covered	T2,T8,T54
IdleSt->DebounceSt	148	Covered	T2,T8,T34
StableSt->IdleSt	206	Covered	T2,T8,T54

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
Branches		21	20	95.24
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	9	90.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T2,T8,T34
0	1	Covered	T2,T8,T34
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T2,T8,T54
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T2,T8,T34
IdleSt	0	-	-	-	-	-	-	Covered	T4,T5,T6
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T2,T8,T54
DebounceSt	-	0	1	0	-	-	-	Covered	T176,T171,T110
DebounceSt	-	0	0	-	-	-	-	Covered	T2,T8,T34
DetectSt	-	-	-	-	1	-	-	Not Covered
DetectSt	-	-	-	-	0	1	-	Covered	T2,T8,T54
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T2,T8,T54
StableSt	-	-	-	-	-	-	0	Covered	T2,T8,T54
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_l2h

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	15	15	100.00	14	93.33
Cover properties	0	0		0
Cover sequences	0	0		0
Total	15	15	100.00	14	93.33

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	70	0	0
CntIncr_A	8302401	1770	0	0
CntNoWrap_A	8302401	7838036	0	0
DetectStDropOut_A	8302401	0	0	0
DetectedOut_A	8302401	3168	0	0
DetectedPulseOut_A	8302401	32	0	0
DisabledIdleSt_A	8302401	7827318	0	0
DisabledNoDetection_A	8302401	7829185	0	0
EnterDebounceSt_A	8302401	38	0	0
EnterDetectSt_A	8302401	32	0	0
EnterStableSt_A	8302401	32	0	0
PulseIsPulse_A	8302401	32	0	0
StayInStableSt	8302401	3124	0	0
gen_high_level_sva.HighLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	20	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	70	0	0
T2	655	2	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	4	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	2	0	0
T53	0	2	0	0
T54	0	2	0	0
T68	407	0	0	0
T116	0	2	0	0
T176	0	1	0	0
T203	0	2	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1770	0	0
T2	655	20	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	32	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	14	0	0
T36	0	20	0	0
T49	0	80	0	0
T53	0	84	0	0
T54	0	22	0	0
T68	407	0	0	0
T116	0	75	0	0
T176	0	13	0	0
T203	0	10	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838036	0	0
T1	509	108	0	0
T2	655	252	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	3168	0	0
T2	655	4	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	123	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	224	0	0
T53	0	455	0	0
T54	0	40	0	0
T68	407	0	0	0
T116	0	144	0	0
T166	0	114	0	0
T197	0	99	0	0
T203	0	38	0	0
T216	0	136	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	32	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T166	0	3	0	0
T197	0	2	0	0
T203	0	1	0	0
T216	0	1	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7827318	0	0
T1	509	108	0	0
T2	655	4	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7829185	0	0
T1	509	109	0	0
T2	655	4	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	38	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T176	0	1	0	0
T203	0	1	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	32	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T166	0	3	0	0
T197	0	2	0	0
T203	0	1	0	0
T216	0	1	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	32	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T166	0	3	0	0
T197	0	2	0	0
T203	0	1	0	0
T216	0	1	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	32	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T166	0	3	0	0
T197	0	2	0	0
T203	0	1	0	0
T216	0	1	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	3124	0	0
T2	655	3	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	120	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	223	0	0
T53	0	454	0	0
T54	0	39	0	0
T68	407	0	0	0
T116	0	143	0	0
T166	0	110	0	0
T197	0	96	0	0
T203	0	36	0	0
T216	0	134	0	0

gen_high_level_sva.HighLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	20	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	0	0	0
T8	0	1	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T49	0	1	0	0
T53	0	1	0	0
T54	0	1	0	0
T68	407	0	0	0
T116	0	1	0	0
T166	0	2	0	0
T167	0	1	0	0
T197	0	1	0	0
T198	0	1	0	0

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
TOTAL		46	44	95.65
CONT_ASSIGN	58	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	30	93.75
ALWAYS	219	3	3	100.00

57                        if (EventType inside {LowLevel, EdgeToLow}) begin : gen_trigger_active_low
58         1/1              assign trigger_active = (trigger_i == 1'b0);
           Tests:       T4 T5 T6 
59                        end else begin : gen_trigger_active_high
60                          assign trigger_active = (trigger_i == 1'b1);
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T5 T6 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T13 T34 T36 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T5 T6 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T5 T6 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T5 T6 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T5 T6 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T5 T6 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T5 T6 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T5 T6 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T5 T6 
148        1/1                    state_d = DebounceSt;
           Tests:       T13 T34 T36 
149        1/1                    cnt_en = 1'b1;
           Tests:       T13 T34 T36 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T13 T34 T36 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T13 T34 T36 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T13 T34 T36 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T13 T50 T53 
167        1/1                    if (trigger_active) begin
           Tests:       T13 T50 T53 
168        1/1                      state_d = DetectSt;
           Tests:       T13 T50 T53 
169                               end else begin
170        1/1                      state_d = IdleSt;
           Tests:       T170 T217 
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T13 T50 T53 
182        1/1                  cnt_en = 1'b1;
           Tests:       T13 T50 T53 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T13 T50 T53 
186        0/1     ==>            state_d = IdleSt;
187        0/1     ==>            cnt_clr = 1'b1;
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T13 T50 T53 
191        1/1                      state_d = StableSt;
           Tests:       T13 T50 T53 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T13 T50 T53 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T13 T50 T53 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T13 T50 T53 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T13 T50 T53 
206        1/1                    state_d = IdleSt;
           Tests:       T13 T50 T197 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T13 T50 T53 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

	Total	Covered	Percent
Conditions	22	19	86.36
Logical	22	19	86.36
Non-Logical	0	0
Event	0	0

 LINE       58
 EXPRESSION (trigger_i == 1'b0)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T4,T5,T6

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T5,T6
1	0	Covered	T4,T5,T6
1	1	Covered	T4,T5,T6

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T34,T36

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T34,T36

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T50,T53

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T13,T94,T34
1	0	Covered	T4,T5,T6
1	1	Covered	T13,T34,T36

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T13,T50,T53
0	1	Not Covered
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T13,T50,T53
0	1	Covered	T13,T50,T197
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T13,T50,T53
1	-	Covered	T13,T50,T197

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	5	83.33
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T13,T34,T36
DetectSt	168	Covered	T13,T50,T53
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T13,T50,T53

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T13,T50,T53
DebounceSt->IdleSt	163	Covered	T34,T36,T49
DetectSt->IdleSt	186	Not Covered
DetectSt->StableSt	191	Covered	T13,T50,T53
IdleSt->DebounceSt	148	Covered	T13,T34,T36
StableSt->IdleSt	206	Covered	T13,T50,T197

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
Branches		21	20	95.24
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	9	90.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T13,T34,T36
0	1	Covered	T13,T34,T36
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T13,T50,T53
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T13,T34,T36
IdleSt	0	-	-	-	-	-	-	Covered	T4,T5,T6
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T13,T50,T53
DebounceSt	-	0	1	0	-	-	-	Covered	T170,T217
DebounceSt	-	0	0	-	-	-	-	Covered	T13,T34,T36
DetectSt	-	-	-	-	1	-	-	Not Covered
DetectSt	-	-	-	-	0	1	-	Covered	T13,T50,T53
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T13,T50,T197
StableSt	-	-	-	-	-	-	0	Covered	T13,T50,T53
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[2].u_sysrst_ctrl_detect_h2l

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	16	16	100.00	15	93.75
Cover properties	0	0		0
Cover sequences	0	0		0
Total	16	16	100.00	15	93.75

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	50	0	0
CntIncr_A	8302401	59444	0	0
CntNoWrap_A	8302401	7838056	0	0
DetectStDropOut_A	8302401	0	0	0
DetectedOut_A	8302401	1638	0	0
DetectedPulseOut_A	8302401	23	0	0
DisabledIdleSt_A	8302401	7724467	0	0
DisabledNoDetection_A	8302401	7726335	0	0
EnterDebounceSt_A	8302401	28	0	0
EnterDetectSt_A	8302401	23	0	0
EnterStableSt_A	8302401	23	0	0
PulseIsPulse_A	8302401	23	0	0
StayInStableSt	8302401	1603	0	0
gen_edge_to_low_event_sva.EdgeToLowEvent_A	8302401	5354	0	0
gen_low_level_sva.LowLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	11	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	50	0	0
T13	626	4	0	0
T34	0	1	0	0
T36	0	1	0	0
T50	0	4	0	0
T52	786	0	0	0
T53	0	2	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	2	0	0
T168	0	2	0	0
T170	0	3	0	0
T175	0	2	0	0
T197	0	2	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	59444	0	0
T13	626	26	0	0
T34	0	13	0	0
T36	0	20	0	0
T49	0	31	0	0
T50	0	32	0	0
T52	786	0	0	0
T53	0	84	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	88	0	0
T168	0	43	0	0
T175	0	32	0	0
T197	0	17	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838056	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1638	0	0
T13	626	105	0	0
T50	0	92	0	0
T52	786	0	0	0
T53	0	181	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	70	0	0
T168	0	43	0	0
T170	0	38	0	0
T175	0	160	0	0
T197	0	58	0	0
T214	0	14	0	0
T215	0	14	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	23	0	0
T13	626	2	0	0
T50	0	2	0	0
T52	786	0	0	0
T53	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T170	0	1	0	0
T175	0	1	0	0
T197	0	1	0	0
T214	0	1	0	0
T215	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7724467	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7726335	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	28	0	0
T13	626	2	0	0
T34	0	1	0	0
T36	0	1	0	0
T49	0	1	0	0
T50	0	2	0	0
T52	786	0	0	0
T53	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T175	0	1	0	0
T197	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	23	0	0
T13	626	2	0	0
T50	0	2	0	0
T52	786	0	0	0
T53	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T170	0	1	0	0
T175	0	1	0	0
T197	0	1	0	0
T214	0	1	0	0
T215	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	23	0	0
T13	626	2	0	0
T50	0	2	0	0
T52	786	0	0	0
T53	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T170	0	1	0	0
T175	0	1	0	0
T197	0	1	0	0
T214	0	1	0	0
T215	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	23	0	0
T13	626	2	0	0
T50	0	2	0	0
T52	786	0	0	0
T53	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	1	0	0
T168	0	1	0	0
T170	0	1	0	0
T175	0	1	0	0
T197	0	1	0	0
T214	0	1	0	0
T215	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	1603	0	0
T13	626	102	0	0
T50	0	89	0	0
T52	786	0	0	0
T53	0	179	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T167	0	69	0	0
T168	0	42	0	0
T170	0	36	0	0
T175	0	158	0	0
T197	0	57	0	0
T214	0	13	0	0
T215	0	13	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

gen_edge_to_low_event_sva.EdgeToLowEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	5354	0	0
T1	509	0	0	0
T2	655	1	0	0
T4	497	10	0	0
T5	415	1	0	0
T6	423	2	0	0
T14	424	1	0	0
T15	443	0	0	0
T16	501	4	0	0
T17	475	0	0	0
T18	0	6	0	0
T19	0	4	0	0
T23	756	0	0	0
T29	0	8	0	0
T31	0	2	0	0

gen_low_level_sva.LowLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	11	0	0
T13	626	1	0	0
T50	0	1	0	0
T52	786	0	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T111	0	1	0	0
T167	0	1	0	0
T168	0	1	0	0
T197	0	1	0	0
T199	0	1	0	0
T201	0	2	0	0
T214	0	1	0	0
T215	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
TOTAL		46	44	95.65
CONT_ASSIGN	60	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	30	93.75
ALWAYS	219	3	3	100.00

59                        end else begin : gen_trigger_active_high
60         1/1              assign trigger_active = (trigger_i == 1'b1);
           Tests:       T4 T5 T6 
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T5 T6 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T13 T34 T36 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T5 T6 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T5 T6 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T5 T6 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T5 T6 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T5 T6 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T5 T6 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T5 T6 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T5 T6 
148        1/1                    state_d = DebounceSt;
           Tests:       T13 T34 T36 
149        1/1                    cnt_en = 1'b1;
           Tests:       T13 T34 T36 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T13 T34 T36 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T13 T34 T36 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T13 T34 T36 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T13 T51 T55 
167        1/1                    if (trigger_active) begin
           Tests:       T13 T51 T55 
168        1/1                      state_d = DetectSt;
           Tests:       T13 T51 T55 
169                               end else begin
170        1/1                      state_d = IdleSt;
           Tests:       T13 T51 T197 
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T13 T51 T55 
182        1/1                  cnt_en = 1'b1;
           Tests:       T13 T51 T55 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T13 T51 T55 
186        0/1     ==>            state_d = IdleSt;
187        0/1     ==>            cnt_clr = 1'b1;
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T13 T51 T55 
191        1/1                      state_d = StableSt;
           Tests:       T13 T51 T55 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T13 T51 T55 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T13 T51 T55 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T13 T51 T55 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T13 T51 T55 
206        1/1                    state_d = IdleSt;
           Tests:       T13 T51 T203 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T13 T51 T55 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

	Total	Covered	Percent
Conditions	22	19	86.36
Logical	22	19	86.36
Non-Logical	0	0
Event	0	0

 LINE       60
 EXPRESSION (trigger_i == 1'b1)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T4,T5,T6

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T5,T6
1	0	Covered	T4,T5,T6
1	1	Covered	T4,T5,T6

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T34,T36

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T34,T36

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T13,T51,T55

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T13,T34,T36
1	0	Covered	T4,T5,T6
1	1	Covered	T13,T34,T36

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T13,T51,T55
0	1	Not Covered
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T13,T51,T55
0	1	Covered	T13,T51,T203
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T13,T51,T55
1	-	Covered	T13,T51,T203

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	5	83.33
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T13,T34,T36
DetectSt	168	Covered	T13,T51,T55
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T13,T51,T55

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T13,T51,T55
DebounceSt->IdleSt	163	Covered	T13,T34,T36
DetectSt->IdleSt	186	Not Covered
DetectSt->StableSt	191	Covered	T13,T51,T55
IdleSt->DebounceSt	148	Covered	T13,T34,T36
StableSt->IdleSt	206	Covered	T13,T51,T55

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

	Line No.	Total	Covered	Percent
Branches		21	20	95.24
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	9	90.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T13,T34,T36
0	1	Covered	T13,T34,T36
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T13,T51,T55
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T13,T34,T36
IdleSt	0	-	-	-	-	-	-	Covered	T4,T5,T6
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T13,T51,T55
DebounceSt	-	0	1	0	-	-	-	Covered	T13,T51,T197
DebounceSt	-	0	0	-	-	-	-	Covered	T13,T34,T36
DetectSt	-	-	-	-	1	-	-	Not Covered
DetectSt	-	-	-	-	0	1	-	Covered	T13,T51,T55
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T13,T51,T203
StableSt	-	-	-	-	-	-	0	Covered	T13,T51,T55
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_l2h

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	15	15	100.00	14	93.33
Cover properties	0	0		0
Cover sequences	0	0		0
Total	15	15	100.00	14	93.33

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	67	0	0
CntIncr_A	8302401	130880	0	0
CntNoWrap_A	8302401	7838039	0	0
DetectStDropOut_A	8302401	0	0	0
DetectedOut_A	8302401	163458	0	0
DetectedPulseOut_A	8302401	30	0	0
DisabledIdleSt_A	8302401	7447826	0	0
DisabledNoDetection_A	8302401	7449695	0	0
EnterDebounceSt_A	8302401	37	0	0
EnterDetectSt_A	8302401	30	0	0
EnterStableSt_A	8302401	30	0	0
PulseIsPulse_A	8302401	30	0	0
StayInStableSt	8302401	163418	0	0
gen_high_level_sva.HighLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	20	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	67	0	0
T13	626	5	0	0
T34	0	1	0	0
T36	0	1	0	0
T51	0	3	0	0
T52	786	0	0	0
T55	0	2	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T175	0	2	0	0
T197	0	1	0	0
T203	0	2	0	0
T204	0	2	0	0
T216	0	2	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	130880	0	0
T13	626	39	0	0
T34	0	13	0	0
T36	0	20	0	0
T51	0	60	0	0
T52	786	0	0	0
T55	0	60	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T175	0	32	0	0
T197	0	17	0	0
T203	0	10	0	0
T204	0	76	0	0
T216	0	71	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838039	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	163458	0	0
T13	626	17	0	0
T51	0	7	0	0
T52	786	0	0	0
T55	0	160	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	22	0	0
T175	0	160	0	0
T203	0	6	0	0
T204	0	192	0	0
T216	0	26	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	11	0	0
T222	0	13	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	30	0	0
T13	626	2	0	0
T51	0	1	0	0
T52	786	0	0	0
T55	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	1	0	0
T175	0	1	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	1	0	0
T222	0	1	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7447826	0	0
T1	509	108	0	0
T2	655	254	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7449695	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	37	0	0
T13	626	3	0	0
T34	0	1	0	0
T36	0	1	0	0
T51	0	2	0	0
T52	786	0	0	0
T55	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T175	0	1	0	0
T197	0	1	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	30	0	0
T13	626	2	0	0
T51	0	1	0	0
T52	786	0	0	0
T55	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	1	0	0
T175	0	1	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	1	0	0
T222	0	1	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	30	0	0
T13	626	2	0	0
T51	0	1	0	0
T52	786	0	0	0
T55	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	1	0	0
T175	0	1	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	1	0	0
T222	0	1	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	30	0	0
T13	626	2	0	0
T51	0	1	0	0
T52	786	0	0	0
T55	0	1	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	1	0	0
T175	0	1	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	1	0	0
T222	0	1	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	163418	0	0
T13	626	15	0	0
T51	0	6	0	0
T52	786	0	0	0
T55	0	158	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	21	0	0
T175	0	158	0	0
T203	0	5	0	0
T204	0	191	0	0
T216	0	25	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	10	0	0
T222	0	12	0	0

gen_high_level_sva.HighLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	20	0	0
T13	626	2	0	0
T51	0	1	0	0
T52	786	0	0	0
T61	503	0	0	0
T62	485	0	0	0
T87	1425	0	0	0
T92	502	0	0	0
T93	522	0	0	0
T168	0	1	0	0
T173	0	2	0	0
T203	0	1	0	0
T204	0	1	0	0
T216	0	1	0	0
T217	0	2	0	0
T218	422	0	0	0
T219	405	0	0	0
T220	526	0	0	0
T221	0	1	0	0
T222	0	1	0	0

Line Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
TOTAL		46	43	93.48
CONT_ASSIGN	58	1	1	100.00
ALWAYS	69	3	3	100.00
CONT_ASSIGN	76	1	1	100.00
CONT_ASSIGN	92	1	1	100.00
CONT_ASSIGN	99	1	1	100.00
CONT_ASSIGN	101	1	1	100.00
ALWAYS	104	3	3	100.00
ALWAYS	125	32	29	90.62
ALWAYS	219	3	3	100.00

57                        if (EventType inside {LowLevel, EdgeToLow}) begin : gen_trigger_active_low
58         1/1              assign trigger_active = (trigger_i == 1'b0);
           Tests:       T4 T5 T6 
59                        end else begin : gen_trigger_active_high
60                          assign trigger_active = (trigger_i == 1'b1);
61                        end
62                      
63                        // In case of edge events, we also need to detect the transition.
64                        logic trigger_event;
65                        if (EventType inside {EdgeToLow, EdgeToHigh}) begin : gen_trigger_event_edge
66                          // This flop is always active, no matter the enable state.
67                          logic trigger_active_q;
68                          always_ff @(posedge clk_i or negedge rst_ni) begin : p_trigger_reg
69         1/1                if (!rst_ni) begin
           Tests:       T4 T5 T6 
70         1/1                  trigger_active_q <= 1'b0;
           Tests:       T4 T5 T6 
71                            end else begin
72         1/1                  trigger_active_q <= trigger_active;
           Tests:       T4 T5 T6 
73                            end
74                          end
75                      
76         1/1              assign trigger_event = trigger_active & ~trigger_active_q;
           Tests:       T4 T5 T6 
77                        // In case of level events, the event is equal to the level being active.
78                        end else begin : gen_trigger_event_level
79                          assign trigger_event = trigger_active;
80                        end
81                      
82                        /////////////////
83                        // Timer Logic //
84                        /////////////////
85                      
86                        // Take the maximum width of both timer values.
87                        localparam int unsigned TimerWidth =
88                            (DetectTimerWidth > DebounceTimerWidth) ? DetectTimerWidth : DebounceTimerWidth;
89                      
90                        logic cnt_en, cnt_clr;
91                        logic [TimerWidth-1:0] cnt_d, cnt_q;
92         1/1            assign cnt_d = (cnt_clr) ? '0           :
           Tests:       T2 T7 T34 
93                                       (cnt_en)  ? cnt_q + 1'b1 :
94                                                   cnt_q;
95                      
96                      
97                        logic cnt_done, thresh_sel;
98                        logic [TimerWidth-1:0] thresh;
99         1/1            assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
           Tests:       T1 T15 T2 
100                                                      TimerWidth'(cfg_debounce_timer_i);
101        1/1            assign cnt_done = (cnt_q >= thresh);
           Tests:       T1 T15 T2 
102                     
103                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_cnt_reg
104        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
105        1/1                cnt_q <= '0;
           Tests:       T4 T5 T6 
106                         end else begin
107        1/1                cnt_q <= cnt_d;
           Tests:       T4 T5 T6 
108                         end
109                       end
110                     
111                       /////////
112                       // FSM //
113                       /////////
114                     
115                       typedef enum logic [1:0] {
116                         IdleSt,
117                         DebounceSt,
118                         DetectSt,
119                         StableSt
120                       } state_t;
121                     
122                       state_t state_d, state_q;
123                     
124                       always_comb begin : p_fsm
125        1/1              state_d = state_q;
           Tests:       T4 T5 T6 
126                     
127                         // Counter controls (clear has priority).
128        1/1              cnt_clr = 1'b0;
           Tests:       T4 T5 T6 
129        1/1              cnt_en = 1'b0;
           Tests:       T4 T5 T6 
130                     
131                         // Detected outputs
132        1/1              event_detected_o = 1'b0;
           Tests:       T4 T5 T6 
133        1/1              event_detected_pulse_o = 1'b0;
           Tests:       T4 T5 T6 
134                     
135                         // Threshold select
136                         // 0: debounce
137                         // 1: detect
138        1/1              thresh_sel = 1'b0;
           Tests:       T4 T5 T6 
139                     
140        1/1              unique case (state_q)
           Tests:       T4 T5 T6 
141                           ////////////////////////////////////////////
142                           // We are waiting for the event to occur.
143                           // This can be either a specific level or edge,
144                           // depending on the configuration.
145                           IdleSt: begin
146                             // Stay here if the detector is disabled.
147        1/1                  if (trigger_event && cfg_enable_i) begin
           Tests:       T4 T5 T6 
148        1/1                    state_d = DebounceSt;
           Tests:       T2 T7 T34 
149        1/1                    cnt_en = 1'b1;
           Tests:       T2 T7 T34 
150                             end
                        MISSING_ELSE
151                           end
152                           ////////////////////////////////////////////
153                           // If an event has occurred, we back off for
154                           // the amount of debounce cycles configured.
155                           // Once the timer has expired, we sample the
156                           // signal again and check whether it has the
157                           // correct level. If so, we move on to the
158                           // detection stage, otherwise we fall back.
159                           DebounceSt: begin
160        1/1                  cnt_en = 1'b1;
           Tests:       T2 T7 T34 
161                             // Unconditionally go back to idle if the detector is disabled.
162        1/1                  if (!cfg_enable_i) begin
           Tests:       T2 T7 T34 
163        1/1                    state_d = IdleSt;
           Tests:       T34 T36 
164        1/1                    cnt_clr = 1'b1;
           Tests:       T34 T36 
165        1/1                  end else if (cnt_done) begin
           Tests:       T2 T7 T34 
166        1/1                    cnt_clr = 1'b1;
           Tests:       T2 T7 T53 
167        1/1                    if (trigger_active) begin
           Tests:       T2 T7 T53 
168        1/1                      state_d = DetectSt;
           Tests:       T2 T7 T53 
169                               end else begin
170        0/1     ==>              state_d = IdleSt;
171                               end
172                             end
                        MISSING_ELSE
173                           end
174                           ////////////////////////////////////////////
175                           // Once the debounce period has passed, we
176                           // check whether the signal remains stable
177                           // throughout the entire detection period.
178                           // If it is not stable at any cycle, we fall
179                           // back to idle.
180                           DetectSt: begin
181        1/1                  thresh_sel = 1'b1;
           Tests:       T2 T7 T53 
182        1/1                  cnt_en = 1'b1;
           Tests:       T2 T7 T53 
183                             // Go back to idle if either the trigger level is not active anymore, or if the
184                             // detector is disabled.
185        1/1                  if (!cfg_enable_i || !trigger_active) begin
           Tests:       T2 T7 T53 
186        0/1     ==>            state_d = IdleSt;
187        0/1     ==>            cnt_clr = 1'b1;
188                             // If the trigger is active, count up.
189                             end else begin
190        1/1                    if (cnt_done) begin
           Tests:       T2 T7 T53 
191        1/1                      state_d = StableSt;
           Tests:       T2 T7 T53 
192        1/1                      cnt_clr = 1'b1;
           Tests:       T2 T7 T53 
193        1/1                      event_detected_o = 1'b1;
           Tests:       T2 T7 T53 
194        1/1                      event_detected_pulse_o = 1'b1;
           Tests:       T2 T7 T53 
195                               end
                   ==>  MISSING_ELSE
196                             end
197                           end
198                           ////////////////////////////////////////////
199                           // At this point we have detected the event
200                           // and monitor whether the signal remains stable.
201                           StableSt: begin
202                             // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                             // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                             // to go back to the idle state.
205        1/1                  if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
           Tests:       T2 T7 T53 
206        1/1                    state_d = IdleSt;
           Tests:       T2 T7 T170 
207                             // Otherwise keep the event detected output signal high.
208                             end else begin
209        1/1                    event_detected_o = 1'b1;
           Tests:       T2 T7 T53 
210                             end
211                           end
212                           ////////////////////////////////////////////
213                           // This is a full case statement
214                           default: ;
Exclude Annotation: VC_COV_UNR
215                         endcase // state_q
216                       end
217                     
218                       always_ff @(posedge clk_i or negedge rst_ni) begin : p_fsm_reg
219        1/1              if (!rst_ni) begin
           Tests:       T4 T5 T6 
220        1/1                state_q <= IdleSt;
           Tests:       T4 T5 T6 
221                         end else begin
222        1/1                state_q <= state_d;
           Tests:       T4 T5 T6 

---

Cond Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

	Total	Covered	Percent
Conditions	22	19	86.36
Logical	22	19	86.36
Non-Logical	0	0
Event	0	0

 LINE       58
 EXPRESSION (trigger_i == 1'b0)
            ---------1---------

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T4,T5,T6

 LINE       76
 EXPRESSION (trigger_active & ((~gen_trigger_event_edge.trigger_active_q)))
             -------1------   ----------------------2---------------------

-1-	-2-	Status	Tests
0	1	Covered	T4,T5,T6
1	0	Covered	T4,T5,T6
1	1	Covered	T4,T5,T6

 LINE       92
 EXPRESSION (cnt_clr ? '0 : (cnt_en ? ((cnt_q + 1'b1)) : cnt_q))
             ---1---

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T7,T34

 LINE       92
 SUB-EXPRESSION (cnt_en ? ((cnt_q + 1'b1)) : cnt_q)
                 ---1--

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T7,T34

 LINE       99
 EXPRESSION (thresh_sel ? (16'(cfg_detect_timer_i)) : (16'(cfg_debounce_timer_i)))
             -----1----

-1-	Status	Tests
0	Covered	T4,T5,T6
1	Covered	T2,T7,T53

 LINE       147
 EXPRESSION (trigger_event && cfg_enable_i)
             ------1------    ------2-----

-1-	-2-	Status	Tests
0	1	Covered	T2,T7,T34
1	0	Covered	T4,T5,T6
1	1	Covered	T2,T7,T34

 LINE       185
 EXPRESSION (((!cfg_enable_i)) || ((!trigger_active)))
             --------1--------    ---------2---------

-1-	-2-	Status	Tests
0	0	Covered	T2,T7,T53
0	1	Not Covered
1	0	Not Covered

 LINE       205
 EXPRESSION (((!cfg_enable_i)) || (((!trigger_active)) && ((!Sticky))))
             --------1--------    ------------------2-----------------

-1-	-2-	Status	Tests
0	0	Covered	T2,T7,T53
0	1	Covered	T2,T7,T170
1	0	Not Covered

 LINE       205
 SUB-EXPRESSION (((!trigger_active)) && ((!Sticky)))
                 ---------1---------    -----2-----

-1-	-2-	Status	Tests
0	-	Covered	T2,T7,T53
1	-	Covered	T2,T7,T170

---

FSM Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

Summary for FSM :: state_q

	Total	Covered	Percent
States	4	4	100.00	(Not included in score)
Transitions	6	5	83.33
Sequences	0	0

State, Transition and Sequence Details for FSM :: state_q

---

states	Line No.	Covered	Tests
DebounceSt	148	Covered	T2,T7,T34
DetectSt	168	Covered	T2,T7,T53
IdleSt	163	Covered	T4,T5,T6
StableSt	191	Covered	T2,T7,T53

transitions	Line No.	Covered	Tests
DebounceSt->DetectSt	168	Covered	T2,T7,T53
DebounceSt->IdleSt	163	Covered	T34,T36
DetectSt->IdleSt	186	Not Covered
DetectSt->StableSt	191	Covered	T2,T7,T53
IdleSt->DebounceSt	148	Covered	T2,T7,T34
StableSt->IdleSt	206	Covered	T2,T7,T170

---

Branch Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

	Line No.	Total	Covered	Percent
Branches		21	19	90.48
TERNARY	92	3	3	100.00
TERNARY	99	2	2	100.00
IF	104	2	2	100.00
CASE	140	10	8	80.00
IF	219	2	2	100.00
IF	69	2	2	100.00

92           assign cnt_d = (cnt_clr) ? '0           :
                                      -1-  
                                      ==>  
93                          (cnt_en)  ? cnt_q + 1'b1 :
                                      -2-  
                                      ==>  
                                      ==>  

Branches:

-1-	-2-	Status	Tests
1	-	Covered	T2,T7,T34
0	1	Covered	T2,T7,T34
0	0	Covered	T4,T5,T6

99           assign thresh = (thresh_sel) ? TimerWidth'(cfg_detect_timer_i) :
                                          -1-  
                                          ==>  
                                          ==>  

Branches:

-1-	Status	Tests
1	Covered	T2,T7,T53
0	Covered	T4,T5,T6

104            if (!rst_ni) begin
               -1-  
105              cnt_q <= '0;
                 ==>
106            end else begin
107              cnt_q <= cnt_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

140            unique case (state_q)
                      -1-  
141              ////////////////////////////////////////////
142              // We are waiting for the event to occur.
143              // This can be either a specific level or edge,
144              // depending on the configuration.
145              IdleSt: begin
146                // Stay here if the detector is disabled.
147                if (trigger_event && cfg_enable_i) begin
                   -2-  
148                  state_d = DebounceSt;
                     ==>
149                  cnt_en = 1'b1;
150                end
                   MISSING_ELSE
                   ==>
151              end
152              ////////////////////////////////////////////
153              // If an event has occurred, we back off for
154              // the amount of debounce cycles configured.
155              // Once the timer has expired, we sample the
156              // signal again and check whether it has the
157              // correct level. If so, we move on to the
158              // detection stage, otherwise we fall back.
159              DebounceSt: begin
160                cnt_en = 1'b1;
161                // Unconditionally go back to idle if the detector is disabled.
162                if (!cfg_enable_i) begin
                   -3-  
163                  state_d = IdleSt;
                     ==>
164                  cnt_clr = 1'b1;
165                end else if (cnt_done) begin
                            -4-  
166                  cnt_clr = 1'b1;
167                  if (trigger_active) begin
                     -5-  
168                    state_d = DetectSt;
                       ==>
169                  end else begin
170                    state_d = IdleSt;
                       ==>
171                  end
172                end
                   MISSING_ELSE
                   ==>
173              end
174              ////////////////////////////////////////////
175              // Once the debounce period has passed, we
176              // check whether the signal remains stable
177              // throughout the entire detection period.
178              // If it is not stable at any cycle, we fall
179              // back to idle.
180              DetectSt: begin
181                thresh_sel = 1'b1;
182                cnt_en = 1'b1;
183                // Go back to idle if either the trigger level is not active anymore, or if the
184                // detector is disabled.
185                if (!cfg_enable_i || !trigger_active) begin
                   -6-  
186                  state_d = IdleSt;
                     ==>
187                  cnt_clr = 1'b1;
188                // If the trigger is active, count up.
189                end else begin
190                  if (cnt_done) begin
                     -7-  
191                    state_d = StableSt;
                       ==>
192                    cnt_clr = 1'b1;
193                    event_detected_o = 1'b1;
194                    event_detected_pulse_o = 1'b1;
195                  end
                     MISSING_ELSE
                     ==> (Excluded)
Exclude Annotation: VC_COV_UNR
196                end
197              end
198              ////////////////////////////////////////////
199              // At this point we have detected the event
200              // and monitor whether the signal remains stable.
201              StableSt: begin
202                // Go back to idle if either the trigger level is not active anymore, or if the detector is
203                // disabled. Note that if the detector is sticky, it has to be explicitly disabled in order
204                // to go back to the idle state.
205                if (!cfg_enable_i || (!trigger_active && !Sticky)) begin
                   -8-  
206                  state_d = IdleSt;
                     ==>
207                // Otherwise keep the event detected output signal high.
208                end else begin
209                  event_detected_o = 1'b1;
                     ==>
210                end
211              end
212              ////////////////////////////////////////////
213              // This is a full case statement
214              default: ;
                 ==> (Excluded)
Exclude Annotation: VC_COV_UNR

Branches:

-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	Status	Tests	Exclude Annotation
IdleSt	1	-	-	-	-	-	-	Covered	T2,T7,T34
IdleSt	0	-	-	-	-	-	-	Covered	T4,T5,T6
DebounceSt	-	1	-	-	-	-	-	Covered	T34,T36
DebounceSt	-	0	1	1	-	-	-	Covered	T2,T7,T53
DebounceSt	-	0	1	0	-	-	-	Not Covered
DebounceSt	-	0	0	-	-	-	-	Covered	T2,T7,T34
DetectSt	-	-	-	-	1	-	-	Not Covered
DetectSt	-	-	-	-	0	1	-	Covered	T2,T7,T53
DetectSt	-	-	-	-	0	0	-	Excluded		VC_COV_UNR
StableSt	-	-	-	-	-	-	1	Covered	T2,T7,T170
StableSt	-	-	-	-	-	-	0	Covered	T2,T7,T53
default	-	-	-	-	-	-	-	Excluded		VC_COV_UNR

219            if (!rst_ni) begin
               -1-  
220              state_q <= IdleSt;
                 ==>
221            end else begin
222              state_q <= state_d;
                 ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

69               if (!rst_ni) begin
                 -1-  
70                 trigger_active_q <= 1'b0;
                   ==>
71               end else begin
72                 trigger_active_q <= trigger_active;
                   ==>

Branches:

-1-	Status	Tests
1	Covered	T4,T5,T6
0	Covered	T4,T5,T6

---

Assert Coverage for Instance : tb.dut.u_sysrst_ctrl_keyintr.gen_keyfsm[3].u_sysrst_ctrl_detect_h2l

	Total	Attempted	Percent	Succeeded/Matched	Percent
Assertions	16	16	100.00	15	93.75
Cover properties	0	0		0
Cover sequences	0	0		0
Total	16	16	100.00	15	93.75

---

Assertion Details

Name	Attempts	Real Successes	Failures	Incomplete
CntClr_A	8302401	44	0	0
CntIncr_A	8302401	36496	0	0
CntNoWrap_A	8302401	7838062	0	0
DetectStDropOut_A	8302401	0	0	0
DetectedOut_A	8302401	56240	0	0
DetectedPulseOut_A	8302401	21	0	0
DisabledIdleSt_A	8302401	7552023	0	0
DisabledNoDetection_A	8302401	7553898	0	0
EnterDebounceSt_A	8302401	23	0	0
EnterDetectSt_A	8302401	21	0	0
EnterStableSt_A	8302401	21	0	0
PulseIsPulse_A	8302401	21	0	0
StayInStableSt	8302401	56208	0	0
gen_edge_to_low_event_sva.EdgeToLowEvent_A	8302401	5053	0	0
gen_low_level_sva.LowLevelEvent_A	8302401	7840005	0	0
gen_not_sticky_sva.StableStDropOut_A	8302401	10	0	0

CntClr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	44	0	0
T2	655	2	0	0
T3	478	0	0	0
T7	711	4	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T53	0	2	0	0
T68	407	0	0	0
T167	0	2	0	0
T170	0	2	0	0
T188	0	2	0	0
T204	0	2	0	0
T217	0	4	0	0

CntIncr_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	36496	0	0
T2	655	20	0	0
T3	478	0	0	0
T7	711	108	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	14	0	0
T36	0	20	0	0
T53	0	84	0	0
T68	407	0	0	0
T167	0	88	0	0
T170	0	75	0	0
T188	0	81	0	0
T204	0	76	0	0
T217	0	196	0	0

CntNoWrap_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7838062	0	0
T1	509	108	0	0
T2	655	252	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DetectStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	0	0	0

DetectedOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	56240	0	0
T2	655	42	0	0
T3	478	0	0	0
T7	711	83	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	42	0	0
T68	407	0	0	0
T114	0	43	0	0
T167	0	44	0	0
T170	0	195	0	0
T188	0	168	0	0
T201	0	132	0	0
T204	0	42	0	0
T217	0	90	0	0

DetectedPulseOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	21	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	1	0	0
T68	407	0	0	0
T114	0	1	0	0
T167	0	1	0	0
T170	0	1	0	0
T188	0	1	0	0
T201	0	2	0	0
T204	0	1	0	0
T217	0	2	0	0

DisabledIdleSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7552023	0	0
T1	509	108	0	0
T2	655	4	0	0
T4	497	96	0	0
T5	415	14	0	0
T6	423	22	0	0
T14	424	23	0	0
T15	443	42	0	0
T16	501	100	0	0
T17	475	74	0	0
T23	756	4	0	0

DisabledNoDetection_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7553898	0	0
T1	509	109	0	0
T2	655	4	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

EnterDebounceSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	23	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T34	0	1	0	0
T36	0	1	0	0
T53	0	1	0	0
T68	407	0	0	0
T167	0	1	0	0
T170	0	1	0	0
T188	0	1	0	0
T204	0	1	0	0
T217	0	2	0	0

EnterDetectSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	21	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	1	0	0
T68	407	0	0	0
T114	0	1	0	0
T167	0	1	0	0
T170	0	1	0	0
T188	0	1	0	0
T201	0	2	0	0
T204	0	1	0	0
T217	0	2	0	0

EnterStableSt_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	21	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	1	0	0
T68	407	0	0	0
T114	0	1	0	0
T167	0	1	0	0
T170	0	1	0	0
T188	0	1	0	0
T201	0	2	0	0
T204	0	1	0	0
T217	0	2	0	0

PulseIsPulse_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	21	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	2	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	1	0	0
T68	407	0	0	0
T114	0	1	0	0
T167	0	1	0	0
T170	0	1	0	0
T188	0	1	0	0
T201	0	2	0	0
T204	0	1	0	0
T217	0	2	0	0

StayInStableSt

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	56208	0	0
T2	655	41	0	0
T3	478	0	0	0
T7	711	80	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T53	0	40	0	0
T68	407	0	0	0
T114	0	42	0	0
T167	0	42	0	0
T170	0	194	0	0
T188	0	167	0	0
T201	0	129	0	0
T204	0	40	0	0
T217	0	87	0	0

gen_edge_to_low_event_sva.EdgeToLowEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	5053	0	0
T1	509	1	0	0
T2	655	1	0	0
T4	497	10	0	0
T5	415	1	0	0
T6	423	3	0	0
T14	424	3	0	0
T15	443	1	0	0
T16	501	6	0	0
T17	475	1	0	0
T18	0	3	0	0
T23	756	0	0	0

gen_low_level_sva.LowLevelEvent_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	7840005	0	0
T1	509	109	0	0
T2	655	255	0	0
T4	497	97	0	0
T5	415	15	0	0
T6	423	23	0	0
T14	424	24	0	0
T15	443	43	0	0
T16	501	101	0	0
T17	475	75	0	0
T23	756	8	0	0

gen_not_sticky_sva.StableStDropOut_A

Name	Attempts	Real Successes	Failures	Incomplete
Total	8302401	10	0	0
T2	655	1	0	0
T3	478	0	0	0
T7	711	1	0	0
T17	475	0	0	0
T18	522	0	0	0
T19	2161	0	0	0
T20	402	0	0	0
T29	489	0	0	0
T31	524	0	0	0
T68	407	0	0	0
T111	0	1	0	0
T114	0	1	0	0
T170	0	1	0	0
T174	0	1	0	0
T188	0	1	0	0
T201	0	1	0	0
T217	0	1	0	0
T223	0	1	0	0