Line Coverage for Module :
prim_clock_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T2 T3
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T2 T3
119 1/1 if (!en_i) begin
Tests: T1 T2 T3
120 1/1 state_d = StDisabling;
Tests: T1 T2 T3
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T2 T3
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T2 T3
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T2 T3
188 1/1 cnt_ovfl <= '0;
Tests: T1 T2 T3
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T3 T7 T8
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T2 T3
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T2 T3
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Module :
prim_clock_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T3,T34,T7 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T34,T7 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T3,T7,T8 |
| 1 | 0 | Covered | T3,T34,T7 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T34,T8 |
FSM Coverage for Module :
prim_clock_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T2,T3 |
| StEnable |
113 |
Covered |
T1,T2,T3 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T2,T3 |
| StEnable->StDisabling |
120 |
Covered |
T1,T2,T3 |
| StEnabling->StEnable |
113 |
Covered |
T1,T2,T3 |
Branch Coverage for Module :
prim_clock_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T2,T3 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T3,T7,T8 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Module :
prim_clock_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
274806697 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
3940 |
3940 |
0 |
0 |
| T4 |
5 |
5 |
0 |
0 |
| T5 |
5 |
5 |
0 |
0 |
| T6 |
5 |
5 |
0 |
0 |
| T27 |
5 |
5 |
0 |
0 |
| T28 |
5 |
5 |
0 |
0 |
| T29 |
5 |
5 |
0 |
0 |
| T30 |
5 |
5 |
0 |
0 |
| T31 |
5 |
5 |
0 |
0 |
| T32 |
5 |
5 |
0 |
0 |
| T33 |
5 |
5 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
3940 |
3940 |
0 |
0 |
| T4 |
5 |
5 |
0 |
0 |
| T5 |
5 |
5 |
0 |
0 |
| T6 |
5 |
5 |
0 |
0 |
| T27 |
5 |
5 |
0 |
0 |
| T28 |
5 |
5 |
0 |
0 |
| T29 |
5 |
5 |
0 |
0 |
| T30 |
5 |
5 |
0 |
0 |
| T31 |
5 |
5 |
0 |
0 |
| T32 |
5 |
5 |
0 |
0 |
| T33 |
5 |
5 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_io_meas.u_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T2 T3
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T2 T3
119 1/1 if (!en_i) begin
Tests: T1 T2 T3
120 1/1 state_d = StDisabling;
Tests: T1 T2 T3
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T2 T3
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T2 T3
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T2 T3
188 1/1 cnt_ovfl <= '0;
Tests: T1 T2 T3
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T8 T11 T12
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T2 T3
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T2 T3
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_io_meas.u_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T3,T7,T8 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T8,T11,T12 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T8,T11,T12 |
| 1 | 0 | Covered | T3,T7,T8 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T34,T8,T12 |
FSM Coverage for Instance : tb.dut.u_io_meas.u_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T2,T3 |
| StEnable |
113 |
Covered |
T1,T2,T3 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T2,T3 |
| StEnable->StDisabling |
120 |
Covered |
T1,T2,T3 |
| StEnabling->StEnable |
113 |
Covered |
T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_io_meas.u_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T2,T3 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T8,T11,T12 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T2,T3 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Instance : tb.dut.u_io_meas.u_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
81234049 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_io_div2_meas.u_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T3 T34
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T3 T34
119 1/1 if (!en_i) begin
Tests: T1 T3 T34
120 1/1 state_d = StDisabling;
Tests: T1 T3 T34
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T3 T34
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T3 T34
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T3 T34
188 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T8 T10 T11
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T3 T34
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T3 T34
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_io_div2_meas.u_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T8,T10,T11 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T8,T10,T11 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T8,T10,T11 |
| 1 | 0 | Covered | T8,T10,T11 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T34,T11,T35 |
FSM Coverage for Instance : tb.dut.u_io_div2_meas.u_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnable |
113 |
Covered |
T1,T3,T34 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T3,T34 |
| StEnable->StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnabling->StEnable |
113 |
Covered |
T1,T3,T34 |
Branch Coverage for Instance : tb.dut.u_io_div2_meas.u_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T3,T34 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T3,T34 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T3,T34 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T8,T10,T11 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Instance : tb.dut.u_io_div2_meas.u_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
39845802 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_io_div4_meas.u_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T2 T3
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T3 T34
119 1/1 if (!en_i) begin
Tests: T1 T3 T34
120 1/1 state_d = StDisabling;
Tests: T1 T3 T34
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T3 T34
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T3 T34
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T3 T34
188 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T3 T7 T12
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T3 T34
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T3 T34
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_io_div4_meas.u_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T3,T34,T7 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T34,T7 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T3,T7,T12 |
| 1 | 0 | Covered | T3,T34,T7 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T8,T11 |
FSM Coverage for Instance : tb.dut.u_io_div4_meas.u_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnable |
113 |
Covered |
T1,T3,T34 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T3,T34 |
| StEnable->StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnabling->StEnable |
113 |
Covered |
T1,T3,T34 |
Branch Coverage for Instance : tb.dut.u_io_div4_meas.u_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T3,T34 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T3,T34 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T3,T7,T12 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Instance : tb.dut.u_io_div4_meas.u_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
19922488 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_main_meas.u_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T3 T34
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T3 T34
119 1/1 if (!en_i) begin
Tests: T1 T3 T34
120 1/1 state_d = StDisabling;
Tests: T1 T3 T34
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T3 T34
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T3 T34
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T3 T34
188 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T7 T35 T12
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T3 T34
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T3 T34
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_main_meas.u_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T7,T8,T10 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T7,T35,T12 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T7,T35,T12 |
| 1 | 0 | Covered | T7,T8,T10 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T11,T12 |
FSM Coverage for Instance : tb.dut.u_main_meas.u_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnable |
113 |
Covered |
T1,T3,T34 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T3,T34 |
| StEnable->StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnabling->StEnable |
113 |
Covered |
T1,T3,T34 |
Branch Coverage for Instance : tb.dut.u_main_meas.u_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T3,T34 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T3,T34 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T3,T34 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T7,T35,T12 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Instance : tb.dut.u_main_meas.u_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
90389067 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_usb_meas.u_meas
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 32 | 32 | 100.00 |
| ALWAYS | 88 | 3 | 3 | 100.00 |
| ALWAYS | 100 | 12 | 12 | 100.00 |
| CONT_ASSIGN | 163 | 1 | 1 | 100.00 |
| ALWAYS | 183 | 13 | 13 | 100.00 |
| CONT_ASSIGN | 199 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 200 | 1 | 1 | 100.00 |
| CONT_ASSIGN | 201 | 1 | 1 | 100.00 |
87 always_ff @(posedge clk_i or negedge rst_ni) begin
88 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
89 1/1 state_q <= StDisable;
Tests: T4 T5 T6
90 end else begin
91 1/1 state_q <= state_d;
Tests: T4 T5 T6
92 end
93 end
94
95 // The following fsm sequence ensures that even if the source
96 // side changes the enable too quickly, the measurement controls
97 // remain consistent.
98 logic cnt_en;
99 always_comb begin
100 1/1 state_d = state_q;
Tests: T1 T2 T3
101 1/1 cnt_en = '0;
Tests: T1 T2 T3
102
103 1/1 unique case (state_q)
Tests: T1 T2 T3
104
105 StDisable: begin
106 1/1 if (en_i) begin
Tests: T1 T2 T3
107 1/1 state_d = StEnabling;
Tests: T1 T2 T3
108 end
MISSING_ELSE
109 end
110
111 StEnabling: begin
112 1/1 if (en_ref_sync) begin
Tests: T1 T2 T3
113 1/1 state_d = StEnable;
Tests: T1 T3 T34
114 end
MISSING_ELSE
115 end
116
117 StEnable: begin
118 1/1 cnt_en = 1'b1;
Tests: T1 T3 T34
119 1/1 if (!en_i) begin
Tests: T1 T3 T34
120 1/1 state_d = StDisabling;
Tests: T1 T3 T34
121 end
MISSING_ELSE
122 end
123
124 StDisabling: begin
125 1/1 if (!en_ref_sync) begin
Tests: T1 T3 T34
126 1/1 state_d = StDisable;
Tests: T1 T3 T34
127 end
MISSING_ELSE
128 end
129
130 //VCS coverage off
131 // pragma coverage off
132 default:;
133 //VCS coverage on
134 // pragma coverage on
135
136 endcase // unique case (state_q)
137 end
138
139 //////////////////////////
140 // Input Clock Logic
141 //////////////////////////
142
143 logic valid_ref;
144 logic valid;
145 // The valid pulse causes the count to reset and start counting again
146 // for each reference cycle.
147 // The count obtained during the last reference cycle is used
148 // to measure how fast/slow the input clock is.
149 prim_pulse_sync u_sync_ref (
150 .clk_src_i(clk_ref_i),
151 .rst_src_ni(rst_ref_ni),
152 .src_pulse_i(ref_en),
153 .clk_dst_i(clk_i),
154 .rst_dst_ni(rst_ni),
155 .dst_pulse_o(valid_ref)
156 );
157
158
159 if (RefCnt == 1) begin : gen_degenerate_case
160 // if reference count is one, cnt_ref is always 0.
161 // So there is no need to maintain a counter, and
162 // valid just becomes valid_ref
163 1/1 assign valid = valid_ref;
Tests: T1 T3 T34
164 end else begin : gen_normal_case
165 logic [RefCntWidth-1:0] cnt_ref;
166 assign valid = valid_ref & (int'(cnt_ref) == RefCnt - 1);
167 always_ff @(posedge clk_i or negedge rst_ni) begin
168 if (!rst_ni) begin
169 cnt_ref <= '0;
170 end else if (!cnt_en && |cnt_ref) begin
171 cnt_ref <= '0;
172 end else if (cnt_en && valid) begin
173 cnt_ref <= '0;
174 end else if (cnt_en && valid_ref) begin
175 cnt_ref <= cnt_ref + 1'b1;
176 end
177 end
178 end
179
180 logic cnt_ovfl;
181 logic [CntWidth-1:0] cnt;
182 always_ff @(posedge clk_i or negedge rst_ni) begin
183 1/1 if (!rst_ni) begin
Tests: T4 T5 T6
184 1/1 cnt <= '0;
Tests: T4 T5 T6
185 1/1 cnt_ovfl <= '0;
Tests: T4 T5 T6
186 1/1 end else if (!cnt_en && |cnt) begin
Tests: T4 T5 T6
187 1/1 cnt <= '0;
Tests: T1 T3 T34
188 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
189 1/1 end else if (valid_o) begin
Tests: T4 T5 T6
190 1/1 cnt <= '0;
Tests: T1 T3 T34
191 1/1 cnt_ovfl <= '0;
Tests: T1 T3 T34
192 1/1 end else if (cnt_ovfl) begin
Tests: T4 T5 T6
193 1/1 cnt <= '{default: '1};
Tests: T3 T8 T10
194 1/1 end else if (cnt_en) begin
Tests: T4 T5 T6
195 1/1 {cnt_ovfl, cnt} <= cnt + 1'b1;
Tests: T1 T3 T34
196 end
MISSING_ELSE
197 end
198
199 1/1 assign valid_o = valid & |cnt;
Tests: T1 T3 T34
200 1/1 assign fast_o = valid_o & ((cnt > max_cnt) | cnt_ovfl);
Tests: T1 T2 T3
201 1/1 assign slow_o = valid_o & (cnt < min_cnt);
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_usb_meas.u_meas
| Total | Covered | Percent |
|---|
| Conditions | 15 | 15 | 100.00 |
| Logical | 15 | 15 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 186
EXPRESSION (((!cnt_en)) && ((|cnt)))
-----1----- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T4,T5,T6 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 199
EXPRESSION (valid & ((|cnt)))
--1-- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T1,T3,T34 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T1,T3,T34 |
LINE 200
EXPRESSION (valid_o & ((cnt > max_cnt) | cnt_ovfl))
---1--- --------------2-------------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T3,T34,T8 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T3,T34,T8 |
LINE 200
SUB-EXPRESSION ((cnt > max_cnt) | cnt_ovfl)
-------1------- ----2---
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T4,T5,T6 |
| 0 | 1 | Covered | T3,T8,T10 |
| 1 | 0 | Covered | T3,T34,T8 |
LINE 201
EXPRESSION (valid_o & (cnt < min_cnt))
---1--- -------2-------
| -1- | -2- | Status | Tests |
|---|
| 0 | 1 | Covered | T4,T5,T6 |
| 1 | 0 | Covered | T1,T3,T34 |
| 1 | 1 | Covered | T7,T11,T35 |
FSM Coverage for Instance : tb.dut.u_usb_meas.u_meas
Summary for FSM :: state_q
| Total | Covered | Percent | |
| States |
4 |
4 |
100.00 |
(Not included in score) |
| Transitions |
4 |
4 |
100.00 |
|
| Sequences |
0 |
0 |
|
|
State, Transition and Sequence Details for FSM :: state_q
| states | Line No. | Covered | Tests |
| StDisable |
126 |
Covered |
T4,T5,T6 |
| StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnable |
113 |
Covered |
T1,T3,T34 |
| StEnabling |
107 |
Covered |
T1,T2,T3 |
| transitions | Line No. | Covered | Tests |
| StDisable->StEnabling |
107 |
Covered |
T1,T2,T3 |
| StDisabling->StDisable |
126 |
Covered |
T1,T3,T34 |
| StEnable->StDisabling |
120 |
Covered |
T1,T3,T34 |
| StEnabling->StEnable |
113 |
Covered |
T1,T3,T34 |
Branch Coverage for Instance : tb.dut.u_usb_meas.u_meas
| Line No. | Total | Covered | Percent |
| Branches |
|
16 |
16 |
100.00 |
| IF |
88 |
2 |
2 |
100.00 |
| CASE |
103 |
8 |
8 |
100.00 |
| IF |
183 |
6 |
6 |
100.00 |
88 if (!rst_ni) begin
-1-
89 state_q <= StDisable;
==>
90 end else begin
91 state_q <= state_d;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T4,T5,T6 |
| 0 |
Covered |
T4,T5,T6 |
103 unique case (state_q)
-1-
104
105 StDisable: begin
106 if (en_i) begin
-2-
107 state_d = StEnabling;
==>
108 end
MISSING_ELSE
==>
109 end
110
111 StEnabling: begin
112 if (en_ref_sync) begin
-3-
113 state_d = StEnable;
==>
114 end
MISSING_ELSE
==>
115 end
116
117 StEnable: begin
118 cnt_en = 1'b1;
119 if (!en_i) begin
-4-
120 state_d = StDisabling;
==>
121 end
MISSING_ELSE
==>
122 end
123
124 StDisabling: begin
125 if (!en_ref_sync) begin
-5-
126 state_d = StDisable;
==>
127 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| StDisable |
1 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StDisable |
0 |
- |
- |
- |
Covered |
T1,T2,T3 |
| StEnabling |
- |
1 |
- |
- |
Covered |
T1,T3,T34 |
| StEnabling |
- |
0 |
- |
- |
Covered |
T1,T2,T3 |
| StEnable |
- |
- |
1 |
- |
Covered |
T1,T3,T34 |
| StEnable |
- |
- |
0 |
- |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
1 |
Covered |
T1,T3,T34 |
| StDisabling |
- |
- |
- |
0 |
Covered |
T1,T3,T34 |
183 if (!rst_ni) begin
-1-
184 cnt <= '0;
==>
185 cnt_ovfl <= '0;
186 end else if (!cnt_en && |cnt) begin
-2-
187 cnt <= '0;
==>
188 cnt_ovfl <= '0;
189 end else if (valid_o) begin
-3-
190 cnt <= '0;
==>
191 cnt_ovfl <= '0;
192 end else if (cnt_ovfl) begin
-4-
193 cnt <= '{default: '1};
==>
194 end else if (cnt_en) begin
-5-
195 {cnt_ovfl, cnt} <= cnt + 1'b1;
==>
196 end
MISSING_ELSE
==>
Branches:
| -1- | -2- | -3- | -4- | -5- | Status | Tests |
| 1 |
- |
- |
- |
- |
Covered |
T4,T5,T6 |
| 0 |
1 |
- |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
1 |
- |
- |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
1 |
- |
Covered |
T3,T8,T10 |
| 0 |
0 |
0 |
0 |
1 |
Covered |
T1,T3,T34 |
| 0 |
0 |
0 |
0 |
0 |
Covered |
T4,T5,T6 |
Assert Coverage for Instance : tb.dut.u_usb_meas.u_meas
Assertion Details
MaxWidth_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
43415291 |
0 |
0 |
0 |
RefCntVal_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
gen_timeout_assert.ClkRatios_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
788 |
788 |
0 |
0 |
| T4 |
1 |
1 |
0 |
0 |
| T5 |
1 |
1 |
0 |
0 |
| T6 |
1 |
1 |
0 |
0 |
| T27 |
1 |
1 |
0 |
0 |
| T28 |
1 |
1 |
0 |
0 |
| T29 |
1 |
1 |
0 |
0 |
| T30 |
1 |
1 |
0 |
0 |
| T31 |
1 |
1 |
0 |
0 |
| T32 |
1 |
1 |
0 |
0 |
| T33 |
1 |
1 |
0 |
0 |
