How to define pins of analog supplies feeding to a digital block?

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Abhishek Narayan

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Hi,

In a design, if I want to use analog power supplies to supply current to a digital block, how the pins connecting these 2 blocks (analog to digital) should be defined in liberty and LEF?
Should they be USE POWER in lib and pg_pin in liberty?
OR
Should they be USE ANALOG in LEF and pin() with is_analog true in lib?
or something else?
Please help me find out the answer to this.
Thank you.
 

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