Datasheet and manual of ADV7181D do not describe power up sequence.
If there is any concern except absolute maximum rating described in datasheet P.9 table 5.
Would you give me some advice ?
The recommended power up sequence would be to bring 3.3V supplies up together before the 1.8V supplies. The reason is to have the digital IO powered before the digital core gets power. You can bring up both rails at the same time without issues.
Note the reference schematic uses 2 switchers with 5V inputs and 3.3 & 1.8V outputs to drive the rails.
Thank you for your advice.
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