Line Coverage for Module :
prim_pulse_sync
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Module :
prim_pulse_sync
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Module :
prim_pulse_sync
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Module :
prim_pulse_sync
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
2147483647 |
49049 |
0 |
0 |
| T1 |
336294 |
21 |
0 |
0 |
| T2 |
75902 |
26 |
0 |
0 |
| T3 |
64022 |
23 |
0 |
0 |
| T4 |
314556 |
26 |
0 |
0 |
| T5 |
245996 |
23 |
0 |
0 |
| T6 |
144440 |
26 |
0 |
0 |
| T7 |
32994 |
23 |
0 |
0 |
| T8 |
19784 |
26 |
0 |
0 |
| T9 |
461450 |
25 |
0 |
0 |
| T10 |
0 |
25 |
0 |
0 |
| T11 |
1078822 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
2147483647 |
51349 |
0 |
0 |
| T1 |
559274 |
21 |
0 |
0 |
| T2 |
125458 |
26 |
0 |
0 |
| T3 |
105402 |
23 |
0 |
0 |
| T4 |
523108 |
26 |
0 |
0 |
| T5 |
409140 |
23 |
0 |
0 |
| T6 |
239944 |
26 |
0 |
0 |
| T7 |
53870 |
23 |
0 |
0 |
| T8 |
31672 |
26 |
0 |
0 |
| T9 |
738342 |
25 |
0 |
0 |
| T10 |
0 |
25 |
0 |
0 |
| T11 |
1780074 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
4321 |
0 |
0 |
| T1 |
114 |
2 |
0 |
0 |
| T2 |
98 |
2 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
2 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
2 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
2 |
0 |
0 |
| T9 |
2882 |
3 |
0 |
0 |
| T10 |
0 |
3 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
4594 |
0 |
0 |
| T1 |
55859 |
2 |
0 |
0 |
| T2 |
12487 |
2 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
2 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
2 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
2 |
0 |
0 |
| T9 |
72105 |
3 |
0 |
0 |
| T10 |
0 |
3 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
4502 |
0 |
0 |
| T1 |
55859 |
2 |
0 |
0 |
| T2 |
12487 |
2 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
2 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
2 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
2 |
0 |
0 |
| T9 |
72105 |
3 |
0 |
0 |
| T10 |
0 |
3 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
4503 |
0 |
0 |
| T1 |
114 |
2 |
0 |
0 |
| T2 |
98 |
2 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
2 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
2 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
2 |
0 |
0 |
| T9 |
2882 |
3 |
0 |
0 |
| T10 |
0 |
3 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2317 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2531 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_thold_hi_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2483 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2483 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2318 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2529 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_thold_lo_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2494 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2494 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_count_hi_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_count_hi_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_count_hi_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_count_hi_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
4089 |
0 |
0 |
| T1 |
114 |
2 |
0 |
0 |
| T2 |
98 |
3 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
3 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
3 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
3 |
0 |
0 |
| T9 |
2882 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
4321 |
0 |
0 |
| T1 |
55859 |
2 |
0 |
0 |
| T2 |
12487 |
3 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
3 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
3 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
3 |
0 |
0 |
| T9 |
72105 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_count_lo_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_count_lo_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_count_lo_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_count_lo_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
4093 |
0 |
0 |
| T1 |
114 |
2 |
0 |
0 |
| T2 |
98 |
3 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
3 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
3 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
3 |
0 |
0 |
| T9 |
2882 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
4320 |
0 |
0 |
| T1 |
55859 |
2 |
0 |
0 |
| T2 |
12487 |
3 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
3 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
3 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
3 |
0 |
0 |
| T9 |
72105 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T2,T3,T4 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T2,T3,T4 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
3361 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
2 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
2 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
2 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
2 |
0 |
0 |
| T9 |
2882 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
3612 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
2 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
2 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
2 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
2 |
0 |
0 |
| T9 |
72105 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T2,T3,T4 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T2,T3,T4 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_ctrl_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
3526 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
2 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
2 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
2 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
2 |
0 |
0 |
| T9 |
72105 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
3527 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
2 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
2 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
2 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
2 |
0 |
0 |
| T9 |
2882 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2319 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2546 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_bark_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2495 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2495 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2301 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2529 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_bite_thold_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2475 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
2475 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wdog_count_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wdog_count_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wdog_count_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wdog_count_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
4104 |
0 |
0 |
| T1 |
114 |
2 |
0 |
0 |
| T2 |
98 |
3 |
0 |
0 |
| T3 |
122 |
2 |
0 |
0 |
| T4 |
108 |
3 |
0 |
0 |
| T5 |
80 |
2 |
0 |
0 |
| T6 |
74 |
3 |
0 |
0 |
| T7 |
105 |
2 |
0 |
0 |
| T8 |
122 |
3 |
0 |
0 |
| T9 |
2882 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
4348 |
0 |
0 |
| T1 |
55859 |
2 |
0 |
0 |
| T2 |
12487 |
3 |
0 |
0 |
| T3 |
10467 |
2 |
0 |
0 |
| T4 |
52246 |
3 |
0 |
0 |
| T5 |
40866 |
2 |
0 |
0 |
| T6 |
23950 |
3 |
0 |
0 |
| T7 |
5324 |
2 |
0 |
0 |
| T8 |
3094 |
3 |
0 |
0 |
| T9 |
72105 |
2 |
0 |
0 |
| T10 |
0 |
2 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |
Line Coverage for Instance : tb.dut.u_reg.u_wkup_cause_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
|---|
| TOTAL | | 7 | 7 | 100.00 |
| ALWAYS | 31 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 49 | 0 | 0 | |
| CONT_ASSIGN | 52 | 0 | 0 | |
| ALWAYS | 55 | 0 | 0 | |
| ALWAYS | 89 | 3 | 3 | 100.00 |
| CONT_ASSIGN | 97 | 1 | 1 | 100.00 |
30 always_ff @(posedge clk_src_i or negedge rst_src_ni) begin
31 1/1 if (!rst_src_ni) begin
Tests: T1 T2 T3
32 1/1 src_level <= 1'b0;
Tests: T1 T2 T3
33 end else begin
34 1/1 src_level <= src_level ^ src_pulse_i;
Tests: T1 T2 T3
35 end
36 end
37
38
39 // source active must come far enough such that the destination domain has time
40 // to create a valid pulse.
41 `ifdef INC_ASSERT
42 //VCS coverage off
43 // pragma coverage off
44
45 // source active flag tracks whether there is an ongoing "toggle" event.
46 // Until this toggle event is accepted by the destination domain (negative edge of
47 // of the pulse output), the source side cannot toggle again.
48 logic effective_rst_n;
49 unreachable assign effective_rst_n = rst_src_ni && dst_pulse_o;
50
51 logic src_active_flag_d, src_active_flag_q;
52 unreachable assign src_active_flag_d = src_pulse_i || src_active_flag_q;
53
54 always_ff @(posedge clk_src_i or negedge effective_rst_n) begin
55 unreachable if (!effective_rst_n) begin
56 unreachable src_active_flag_q <= '0;
57 end else begin
58 unreachable src_active_flag_q <= src_active_flag_d;
59 end
60 end
61
62 //VCS coverage on
63 // pragma coverage on
64
65 `ASSERT(SrcPulseCheck_M, src_pulse_i |-> !src_active_flag_q, clk_src_i, !rst_src_ni)
66 `endif
67
68 //////////////////////////////////////////////////////////
69 // synchronize level signal to destination clock domain //
70 //////////////////////////////////////////////////////////
71 logic dst_level;
72
73 prim_flop_2sync #(.Width(1)) prim_flop_2sync (
74 // source clock domain
75 .d_i (src_level),
76 // destination clock domain
77 .clk_i (clk_dst_i),
78 .rst_ni (rst_dst_ni),
79 .q_o (dst_level)
80 );
81
82 ////////////////////////////////////////
83 // convert level signal back to pulse //
84 ////////////////////////////////////////
85 logic dst_level_q;
86
87 // delay dst_level by 1 cycle
88 always_ff @(posedge clk_dst_i or negedge rst_dst_ni) begin
89 1/1 if (!rst_dst_ni) begin
Tests: T1 T2 T3
90 1/1 dst_level_q <= 1'b0;
Tests: T1 T2 T3
91 end else begin
92 1/1 dst_level_q <= dst_level;
Tests: T1 T2 T3
93 end
94 end
95
96 // edge detection
97 1/1 assign dst_pulse_o = dst_level_q ^ dst_level;
Tests: T1 T2 T3
Cond Coverage for Instance : tb.dut.u_reg.u_wkup_cause_cdc.u_src_to_dst_req
| Total | Covered | Percent |
|---|
| Conditions | 8 | 8 | 100.00 |
| Logical | 8 | 8 | 100.00 |
| Non-Logical | 0 | 0 | |
| Event | 0 | 0 | |
LINE 34
EXPRESSION (src_level ^ src_pulse_i)
----1---- -----2-----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T1,T2,T3 |
| 1 | 1 | Covered | T12,T13,T16 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T1,T2,T3 |
| 1 | 0 | Covered | T12,T13,T16 |
| 1 | 1 | Covered | T1,T2,T3 |
Branch Coverage for Instance : tb.dut.u_reg.u_wkup_cause_cdc.u_src_to_dst_req
| Line No. | Total | Covered | Percent |
| Branches |
|
4 |
4 |
100.00 |
| IF |
31 |
2 |
2 |
100.00 |
| IF |
89 |
2 |
2 |
100.00 |
31 if (!rst_src_ni) begin
-1-
32 src_level <= 1'b0;
==>
33 end else begin
34 src_level <= src_level ^ src_pulse_i;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
89 if (!rst_dst_ni) begin
-1-
90 dst_level_q <= 1'b0;
==>
91 end else begin
92 dst_level_q <= dst_level;
==>
Branches:
| -1- | Status | Tests |
| 1 |
Covered |
T1,T2,T3 |
| 0 |
Covered |
T1,T2,T3 |
Assert Coverage for Instance : tb.dut.u_reg.u_wkup_cause_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1726670 |
1851 |
0 |
0 |
| T1 |
114 |
1 |
0 |
0 |
| T2 |
98 |
1 |
0 |
0 |
| T3 |
122 |
1 |
0 |
0 |
| T4 |
108 |
1 |
0 |
0 |
| T5 |
80 |
1 |
0 |
0 |
| T6 |
74 |
1 |
0 |
0 |
| T7 |
105 |
1 |
0 |
0 |
| T8 |
122 |
1 |
0 |
0 |
| T9 |
2882 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
1684 |
0 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
432583434 |
2042 |
0 |
0 |
| T1 |
55859 |
1 |
0 |
0 |
| T2 |
12487 |
1 |
0 |
0 |
| T3 |
10467 |
1 |
0 |
0 |
| T4 |
52246 |
1 |
0 |
0 |
| T5 |
40866 |
1 |
0 |
0 |
| T6 |
23950 |
1 |
0 |
0 |
| T7 |
5324 |
1 |
0 |
0 |
| T8 |
3094 |
1 |
0 |
0 |
| T9 |
72105 |
1 |
0 |
0 |
| T10 |
0 |
1 |
0 |
0 |
| T11 |
176997 |
0 |
0 |
0 |