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how to calculate setup & holdtime from liberty file

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sakshi gupta

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can somebody explain me with example how we can calculate setup & hold from synopsys liberty file ?
 

yx.yang

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there is a good explaination in the help menu of the tool itself......
You can also see the *.lib for detail.
Basically, its based on look-up tables. The input is usually input trasition and output load, the look-up table output will be output transion and signal delay.
Of cause there will be some filter if the input data not in the *.lib look-up table (ususally is the case).
 
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