Question from a rookie:How to generate a SPEF file.

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oscillator_cn1

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Hi,all
I'm doing STA of an IP, but it need SPEF file . Does anybody tell me how to generate a SPEF file ?
Thanks.
 

Usually SPEF can be generated from layout tools but for accurate result StarRCXT (Synopsys tool) should be used. You have to give milkyway or GDS alongwith nxtgrd file as input to StarRCXT.
 
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