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Forums > Digital IC > Floorplanning, Place and route

Subject: 1 question for hold SI Fix, 1 question for MMMC
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eminemshow
Posts: 75
Online: User is Offline
2/03/2008 7:50 PM  

hi, ALL:


I got 2 questions recently.

1. When I am using 'optDesign -si -setup -postRoute', I found that SOCE just use 'launchChild' command to call 'CeltIC', then load the attacker-victim file. Then encounter will use 'fixGlitchVio' and other commands to fix SI & CrossTalk. This is the case for setup (worst) corner SI & crosstalk fix. But how can encounter fix the hold violation with minus crosstalk delta delay? By using incr SDF or something? I am using SOCE52.

2. Can I set different derating factors for best and worst corners, for example, 1.0, 0.9 for worst corner, 1.0, 1.1 for best corner. So I should use multi-corner feature in SOCE. Can SOCE52 do this?


Many thanks!
BobD
Posts: 80
Online: User is Offline
2/06/2008 12:55 PM  
Migrating to MMMC, even with only a single setup and single hold view, would help with both of these issues. If you're able to, I'd recommend migrating to a more recent version- 7.1 if possible. MMMC support is not available in 5.2. I believe it was first introduced in 6.1.

Thanks,
Bob
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Forums > Digital IC > Floorplanning, Place and route > 1 question for hold SI Fix, 1 question for MMMC


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