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how to choose a particular library file for synthesis

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dha_synth

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hello all,

what are the parameters needs to be consider while choosing a specific library file for any synthesis process? or what all conditions that can vary from library to library


Thanx in advance
dha_synth
 

Process, temperature and voltage are the parameters which can vary between libraries. Depending on the stage of the ASIC flow, you have to choose the relevant library...For synthesis "slow cold" libraries are usually preferred...
 

thanks for reply,

How do you exactly relating PVT to stages of asic flow?

and why slow cold libraries are usually prefer?

Do we consider the availability of the components in the libraries for synthesis?

Thanks
 

The main sim during synthesis is to remove all the setup violations. That is why these libraries are chosen. Yes, we do consider the availability of the components in the libraries. I did not get your first question.
 

Thanks for the reply.

In your forst reply you mentioned " Depending on the stage of the ASIC flow, you have to choose the relevant library"..

I didnt get meaning of this line.
 

For synthesis it is "slow cold". Post layout STA will use "fast hot".
 

Process corner, voltage, temperature, number of tracks (i.e. cell height), threshold voltage, channel length, whether specific cells are available (E.g. UPF support).
 

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