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PCM1862-Q1: power sequence

Part Number: PCM1862-Q1

Hello Team, 

My customer is using AVDD and DVDD same 3.3V rail and IOVDD 1.8V.

Is there any timing requirement between the 3.3V and 1.8V?

If there's no strict requirement in miliseconds, what should come first between 3.3 or 1.8?

Thank you.