后仿问题求助

fimwest · 发表于 2019-3-15 22:40:47

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本帖最后由 fimwest 于 2019-3-16 20:49 编辑

write sdf的时候-include {SETUPHOLD RECREM}了，后仿时报waining:Unable to annotate to non-existent timing check(RECREM (posedge CDN) (COND D_SDFCHK (posedge CP)......，查找库里对应的单元发现有如下的定义。请问有大虾知道在后仿时是否要define NTC和RECREM这两个参数吗? NTC是negtive timing check还是no timing check？

`ifdef TETRAMAX
`else
specify
if (CP == 1'b1 && D == 1'b1)
(negedge CDN => (Q+:1'b0)) = (0, 0);
if (CP == 1'b1 && D == 1'b0)
(negedge CDN => (Q+:1'b0)) = (0, 0);
if (CP == 1'b0 && D == 1'b1)
(negedge CDN => (Q+:1'b0)) = (0, 0);
if (CP == 1'b0 && D == 1'b0)
(negedge CDN => (Q+:1'b0)) = (0, 0);
ifnone (negedge CDN => (Q+:1'b0)) = (0, 0);
(posedge CP => (Q+)) = (0, 0);
$width (negedge CDN, 0, 0, notifier);
$width (posedge CP &&& CP_DEFCHK, 0, 0, notifier);
$width (negedge CP &&& CP_DEFCHK, 0, 0, notifier);
`ifdef NTC
`ifdef RECREM
$setuphold (posedge CP &&& D_DEFCHK, posedge D, 0, 0, notifier,,, CP_d, D_d);
$setuphold (posedge CP &&& D_DEFCHK, negedge D, 0, 0, notifier,,, CP_d, D_d);
$recrem (posedge CDN, posedge CP, 0,0, notifier, , , CDN_d, CP_d);
`else
$setuphold (posedge CP &&& D_DEFCHK, posedge D, 0, 0, notifier,,, CP_d, D_d);
$setuphold (posedge CP &&& D_DEFCHK, negedge D, 0, 0, notifier,,, CP_d, D_d);
$recovery (posedge CDN, posedge CP, 0, notifier);
$hold (posedge CP, posedge CDN, 0, notifier);
`endif
`else
$setuphold (posedge CP &&& D_DEFCHK, posedge D, 0, 0, notifier);
$setuphold (posedge CP &&& D_DEFCHK, negedge D, 0, 0, notifier);
$recovery (posedge CDN, posedge CP, 0, notifier);
$hold (posedge CP, posedge CDN, 0, notifier);
`endif
endspecify

复制代码

mythbuster · 发表于 2020-4-3 13:45:08

我也遇到这个问题楼主解决了吗

[求助] 后仿问题求助

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