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Clock Gating: Pre or Post Control

Hi,

I am currently using lp_clock_gating_control_point set to postcontrol, simply because this was set in the the scripts I inherited.

Are there any signficant advantages of postcontrol over precontrol?

I guess that postcontrol has a slight timing advantage, since precontrol has an additonal gate in the EN-D path.

Anything else? Which option do other users prefer or use?

Thanks,

Steven

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grasshopper over 14 years ago

Hi Steven,
timing is certainly a difference but I believe the biggest difference is observabiliy for DFT coverage purposes. Post control limits your ability to check proper operation of the CG latch if not mistaken
gh-
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grasshopper over 14 years ago

Hi Steven,
timing is certainly a difference but I believe the biggest difference is observabiliy for DFT coverage purposes. Post control limits your ability to check proper operation of the CG latch if not mistaken
gh-
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