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LMK03328: Check Power On Sequence

Part Number: LMK03328

I am now checking the power on sequence for LMK03328.

The measured waveform is shown above, with VDDO (1.8V supply) rising before VDD (3.3V supply). (I have also confirmed that PDN rises at an interval after VDDO rises.)

①Is there a problem with the device if VDDO rises before VDD?

Also, we are now confirming that I2C accesses rarely fail during LMK03328 startup.

②Is there any connection to the above power sequence, and if so, any possible explanation for the I2C access failure?