Clock Transition violations

[raj1435]

Hi,

Can any one explain me about transition violations and How to fix the trans violations. I have specified the max_trans value. But still i am getting the trans violations.

It will be pleasure if some one explain me clearly about the causes and impacts.

Thanks,
raj

 

[hoanglongroyal]

hi raj,
I'm not an expert on it, but I have somethings to share.
- trans violations might come from big load as the previous pin drive.
- to fix it, I think you need to use a stronger cell (of course you have to trade off timing/power/...) or break number of fanout (to reduce load)

I have specified the max_trans value. But still i am getting the trans violations.

as I know, max_trans do not help you optimize your design, but just a threshold number to see which are exceeded.