Multiple Power Domain or single Power domain?

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kumar_eee

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Multiple Power Domain

How do you know whether a given design is Multiple Power Domain or single Power domain?.
 

Re: Multiple Power Domain

Multiple power domains would require the use of isolation cells, level shifters and power switches (also retention logic if reqd). So looking at the netlist or the power-aware RTL (if you have one) with the above cells in the design you will be able to make out if it is a multi power domain design. Also you can look for the UPF (Unified Power Format) when the power constraints are placed.

- Pravith
 

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