SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The external pin 'PORz' is the primary power on reset input (active LOW) to the entire device. When LOW, it performs a POR on the entire device and puts all IOs in a safe state (Reset/HHV state). Upon PORz deassertion, IOs will enter the default state defined in the Device Data sheet and the boot process will be initiated.
Timing sequence below shows the reset sequence for WARMRSTn pad and the Internal Reset to System during PORz deassertion.
MMRs which get 'reset by PORz only' are captured in register description of those registers.