TPS65982 reset issue

There is not a time requirement for how long one would need to wait until MRESET can be toggled.

Since the ADC is capable of polling GPIOs, my guess is that MRESET can start at a low state and RESETZ will never go high.

Do you have a set of 2 TPS65982-EVM products? If so, I can show you how to test the behavior using the EVM.

Are you designing a ThunderBolt system that requires VOUT_3V3 to power the Intel Alpine Ridge IC?

If not, could you tell us what type of IC you are trying to power with VOUT_3V3?

Or are you using RESETZ to hold another IC in Reset until some other signal toggles?