Help me understand Clock Tree Synthesis and a method to contain fanout violations

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M:ak

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Hi ,

I am a relatively new , to the ASIC flow . I am looking to understand , Clock Tree Synthesis . I know why it is done theoretically , but i have a few specific queries , kindly help me understand the same ->

1. if we have clock with say a latency { max - min insertion delay } = 250ps
a skew of 40 ps

compare this to a strategy , where the clock has a skew of 10 ps but latency of 500ps . Which is a better clock strategy ?

a) Kindly explain , with reference to OCV ?

b) power utilization .



2. what can be done to contain fanout violations post the clock tree being built ? is cloning , decloning the only work around . Can anyone suggest a flow with SOCencounter .

Thanks
 

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