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 |
50442 |
0 |
0 |
T1 |
68920 |
21 |
0 |
0 |
T2 |
134994 |
26 |
0 |
0 |
T3 |
89594 |
26 |
0 |
0 |
T4 |
389990 |
25 |
0 |
0 |
T5 |
234890 |
23 |
0 |
0 |
T6 |
347734 |
23 |
0 |
0 |
T7 |
1748364 |
247 |
0 |
0 |
T8 |
141200 |
26 |
0 |
0 |
T9 |
0 |
21 |
0 |
0 |
T10 |
0 |
21 |
0 |
0 |
T11 |
515280 |
0 |
0 |
0 |
T12 |
633198 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2147483647 |
53427 |
0 |
0 |
T1 |
113832 |
21 |
0 |
0 |
T2 |
224030 |
26 |
0 |
0 |
T3 |
148086 |
26 |
0 |
0 |
T4 |
646474 |
25 |
0 |
0 |
T5 |
390598 |
23 |
0 |
0 |
T6 |
578298 |
23 |
0 |
0 |
T7 |
2888404 |
247 |
0 |
0 |
T8 |
234352 |
26 |
0 |
0 |
T9 |
0 |
21 |
0 |
0 |
T10 |
0 |
21 |
0 |
0 |
T11 |
850224 |
0 |
0 |
0 |
T12 |
1037090 |
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 |
2404804 |
4407 |
0 |
0 |
T1 |
97 |
2 |
0 |
0 |
T2 |
90 |
2 |
0 |
0 |
T3 |
116 |
2 |
0 |
0 |
T4 |
329 |
3 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
22 |
0 |
0 |
T8 |
92 |
2 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
4787 |
0 |
0 |
T1 |
11325 |
2 |
0 |
0 |
T2 |
22349 |
2 |
0 |
0 |
T3 |
14739 |
2 |
0 |
0 |
T4 |
64450 |
3 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
22 |
0 |
0 |
T8 |
23380 |
2 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 |
622911264 |
4665 |
0 |
0 |
T1 |
11325 |
2 |
0 |
0 |
T2 |
22349 |
2 |
0 |
0 |
T3 |
14739 |
2 |
0 |
0 |
T4 |
64450 |
3 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
22 |
0 |
0 |
T8 |
23380 |
2 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
4665 |
0 |
0 |
T1 |
97 |
2 |
0 |
0 |
T2 |
90 |
2 |
0 |
0 |
T3 |
116 |
2 |
0 |
0 |
T4 |
329 |
3 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
22 |
0 |
0 |
T8 |
92 |
2 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
2404804 |
2399 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
2675 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
622911264 |
2628 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
2628 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
2404804 |
2450 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
2714 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
622911264 |
2669 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
2669 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 |
2404804 |
4063 |
0 |
0 |
T1 |
97 |
2 |
0 |
0 |
T2 |
90 |
3 |
0 |
0 |
T3 |
116 |
3 |
0 |
0 |
T4 |
329 |
2 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
25 |
0 |
0 |
T8 |
92 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
4372 |
0 |
0 |
T1 |
11325 |
2 |
0 |
0 |
T2 |
22349 |
3 |
0 |
0 |
T3 |
14739 |
3 |
0 |
0 |
T4 |
64450 |
2 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
25 |
0 |
0 |
T8 |
23380 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 |
2404804 |
4109 |
0 |
0 |
T1 |
97 |
2 |
0 |
0 |
T2 |
90 |
3 |
0 |
0 |
T3 |
116 |
3 |
0 |
0 |
T4 |
329 |
2 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
25 |
0 |
0 |
T8 |
92 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
4400 |
0 |
0 |
T1 |
11325 |
2 |
0 |
0 |
T2 |
22349 |
3 |
0 |
0 |
T3 |
14739 |
3 |
0 |
0 |
T4 |
64450 |
2 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
25 |
0 |
0 |
T8 |
23380 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 |
2404804 |
3419 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
2 |
0 |
0 |
T3 |
116 |
2 |
0 |
0 |
T4 |
329 |
2 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
19 |
0 |
0 |
T8 |
92 |
2 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
3743 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
2 |
0 |
0 |
T3 |
14739 |
2 |
0 |
0 |
T4 |
64450 |
2 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
19 |
0 |
0 |
T8 |
23380 |
2 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 |
622911264 |
3635 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
2 |
0 |
0 |
T3 |
14739 |
2 |
0 |
0 |
T4 |
64450 |
2 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
19 |
0 |
0 |
T8 |
23380 |
2 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
3635 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
2 |
0 |
0 |
T3 |
116 |
2 |
0 |
0 |
T4 |
329 |
2 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
19 |
0 |
0 |
T8 |
92 |
2 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
2404804 |
2468 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
2751 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
622911264 |
2696 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
2696 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
2404804 |
2404 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
2696 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
622911264 |
2636 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
2404804 |
2636 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
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 |
2404804 |
4048 |
0 |
0 |
T1 |
97 |
2 |
0 |
0 |
T2 |
90 |
3 |
0 |
0 |
T3 |
116 |
3 |
0 |
0 |
T4 |
329 |
2 |
0 |
0 |
T5 |
83 |
2 |
0 |
0 |
T6 |
118 |
2 |
0 |
0 |
T7 |
2394 |
25 |
0 |
0 |
T8 |
92 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
4376 |
0 |
0 |
T1 |
11325 |
2 |
0 |
0 |
T2 |
22349 |
3 |
0 |
0 |
T3 |
14739 |
3 |
0 |
0 |
T4 |
64450 |
2 |
0 |
0 |
T5 |
39010 |
2 |
0 |
0 |
T6 |
57759 |
2 |
0 |
0 |
T7 |
287404 |
25 |
0 |
0 |
T8 |
23380 |
3 |
0 |
0 |
T9 |
0 |
2 |
0 |
0 |
T10 |
0 |
2 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
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 | T7,T15,T24 |
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 | T7,T15,T24 |
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 |
2404804 |
1746 |
0 |
0 |
T1 |
97 |
1 |
0 |
0 |
T2 |
90 |
1 |
0 |
0 |
T3 |
116 |
1 |
0 |
0 |
T4 |
329 |
1 |
0 |
0 |
T5 |
83 |
1 |
0 |
0 |
T6 |
118 |
1 |
0 |
0 |
T7 |
2394 |
10 |
0 |
0 |
T8 |
92 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
804 |
0 |
0 |
0 |
T12 |
1710 |
0 |
0 |
0 |
SrcPulseCheck_M
Name | Attempts | Real Successes | Failures | Incomplete |
Total |
622911264 |
1984 |
0 |
0 |
T1 |
11325 |
1 |
0 |
0 |
T2 |
22349 |
1 |
0 |
0 |
T3 |
14739 |
1 |
0 |
0 |
T4 |
64450 |
1 |
0 |
0 |
T5 |
39010 |
1 |
0 |
0 |
T6 |
57759 |
1 |
0 |
0 |
T7 |
287404 |
10 |
0 |
0 |
T8 |
23380 |
1 |
0 |
0 |
T9 |
0 |
1 |
0 |
0 |
T10 |
0 |
1 |
0 |
0 |
T11 |
84540 |
0 |
0 |
0 |
T12 |
102683 |
0 |
0 |
0 |