UPF for standard IO cells

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NeilDegruth

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Hi, I use Design Compiler and IC Compiler II for top-level designs. Do I need to write UPF for standard IO cells since they have two voltage domains (VDD and VDDPST)?
 

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VDDPST drives the cells inside the IOs. It will not be going to the core, so you can ignore it during UPF encoding. You don't have to, but you can.
 

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