Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
308 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
308 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_3_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
308 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
308 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
306 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
307 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_4_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
307 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
307 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
325 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
325 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_5_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
325 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
325 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
279 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
279 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_6_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
279 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
279 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
269 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
269 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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: T68 T174 T385
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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 | T68,T174,T385 |
| 1 | 0 | Covered | T68,T174,T385 |
| 1 | 1 | Covered | T68,T425,T428 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T68,T174,T385 |
| 1 | 0 | Covered | T68,T425,T428 |
| 1 | 1 | Covered | T68,T174,T385 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_detector_cnt_th_7_cdc.u_arb.gen_passthru.u_dst_to_src_ack
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
269 |
0 |
0 |
| T68 |
480871 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
65525 |
0 |
0 |
0 |
| T264 |
56929 |
0 |
0 |
0 |
| T269 |
36029 |
0 |
0 |
0 |
| T338 |
35301 |
0 |
0 |
0 |
| T342 |
575190 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
61782 |
0 |
0 |
0 |
| T430 |
124129 |
0 |
0 |
0 |
| T431 |
113902 |
0 |
0 |
0 |
| T432 |
36232 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
269 |
0 |
0 |
| T68 |
4317 |
2 |
0 |
0 |
| T182 |
0 |
1 |
0 |
0 |
| T197 |
898 |
0 |
0 |
0 |
| T264 |
821 |
0 |
0 |
0 |
| T269 |
528 |
0 |
0 |
0 |
| T338 |
575 |
0 |
0 |
0 |
| T342 |
4999 |
0 |
0 |
0 |
| T385 |
0 |
1 |
0 |
0 |
| T411 |
0 |
1 |
0 |
0 |
| T424 |
0 |
1 |
0 |
0 |
| T425 |
0 |
2 |
0 |
0 |
| T426 |
0 |
1 |
0 |
0 |
| T427 |
0 |
2 |
0 |
0 |
| T428 |
0 |
2 |
0 |
0 |
| T429 |
888 |
0 |
0 |
0 |
| T430 |
1333 |
0 |
0 |
0 |
| T431 |
2319 |
0 |
0 |
0 |
| T432 |
571 |
0 |
0 |
0 |
| T434 |
0 |
2 |
0 |
0 |
Line Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.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: T26 T12 T72
Cond Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.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 | T26,T12,T72 |
| 1 | 0 | Covered | T26,T12,T72 |
| 1 | 1 | Covered | T26,T12,T72 |
LINE 97
EXPRESSION (dst_level_q ^ dst_level)
-----1----- ----2----
| -1- | -2- | Status | Tests |
|---|
| 0 | 0 | Covered | T1,T2,T3 |
| 0 | 1 | Covered | T26,T12,T72 |
| 1 | 0 | Covered | T12,T72,T73 |
| 1 | 1 | Covered | T26,T12,T72 |
Branch Coverage for Instance : tb.dut.top_earlgrey.u_pinmux_aon.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.top_earlgrey.u_pinmux_aon.u_reg.u_wkup_cause_cdc.u_src_to_dst_req
Assertion Details
DstPulseCheck_A
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
1785066 |
322 |
0 |
0 |
| T7 |
442 |
0 |
0 |
0 |
| T12 |
0 |
3 |
0 |
0 |
| T13 |
513 |
0 |
0 |
0 |
| T26 |
538 |
1 |
0 |
0 |
| T27 |
632 |
0 |
0 |
0 |
| T28 |
502 |
0 |
0 |
0 |
| T32 |
376 |
0 |
0 |
0 |
| T70 |
0 |
2 |
0 |
0 |
| T72 |
0 |
2 |
0 |
0 |
| T73 |
0 |
2 |
0 |
0 |
| T74 |
0 |
4 |
0 |
0 |
| T79 |
0 |
3 |
0 |
0 |
| T106 |
419 |
0 |
0 |
0 |
| T120 |
0 |
2 |
0 |
0 |
| T121 |
435 |
0 |
0 |
0 |
| T122 |
412 |
0 |
0 |
0 |
| T125 |
0 |
4 |
0 |
0 |
| T141 |
380 |
0 |
0 |
0 |
| T423 |
0 |
2 |
0 |
0 |
SrcPulseCheck_M
| Name | Attempts | Real Successes | Failures | Incomplete |
| Total |
151637819 |
325 |
0 |
0 |
| T7 |
24676 |
0 |
0 |
0 |
| T12 |
0 |
3 |
0 |
0 |
| T13 |
34933 |
0 |
0 |
0 |
| T26 |
25690 |
2 |
0 |
0 |
| T27 |
47989 |
0 |
0 |
0 |
| T28 |
23498 |
0 |
0 |
0 |
| T32 |
23203 |
0 |
0 |
0 |
| T70 |
0 |
3 |
0 |
0 |
| T72 |
0 |
2 |
0 |
0 |
| T73 |
0 |
2 |
0 |
0 |
| T74 |
0 |
4 |
0 |
0 |
| T79 |
0 |
3 |
0 |
0 |
| T106 |
23413 |
0 |
0 |
0 |
| T120 |
0 |
2 |
0 |
0 |
| T121 |
23976 |
0 |
0 |
0 |
| T122 |
23842 |
0 |
0 |
0 |
| T125 |
0 |
4 |
0 |
0 |
| T141 |
20841 |
0 |
0 |
0 |
| T423 |
0 |
2 |
0 |
0 |