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AR# 15837

12.1 Timing - Path Tracing Control (PTC) warnings are reported: "Timing 2498/2695"

説明

When I use PTC (Path Tracing Control) applied to a time group that is constructed from BELs, warnings similar to the following occur:  

 

"WARNING:Timing:2498 - Path Tracing Control TIMEGRP "latch_4" ENABLE = "lat_d_q" ; contains items that are not components. These items will be ignored." 

"WARNING:Timing:2498 - Path Tracing Control TIMEGRP "latch_3" ENABLE = "lat_d_q" ; " 

"WARNING:Timing:2695 - Path Tracing Control TIMEGRP "TG_ASYNCRESET" ENABLE=reg_sr_q; contains items that are not components. These items will be ignored."

ソリューション

For PTC to be utilized, time groups must be constructed from COMPs, not BELs. Timing Analyzer cannot currently apply path tracing controls to BELs because PTCs are implemented on a per-delay basis. Since delays occur at the COMP level, they cannot be successfully applied to BELs.

AR# 15837
日付 05/15/2014
ステータス アーカイブ
種類 一般
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