SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
IOs support HHV mode during power up. HHV is defined as a state when PORz signal is driven LOW.
HHV allows IO cells to be tri-stated and is an IO feature. All IO cells have HHV which is asserted (driven) by HHV generated during PORz assertion. There are default pull values during this HHV/PORz assertion specified in the device Datasheet for each pin. All HHV logic controlling the buffer high-impedance control and the associated default pull value will be asynchronous.
This diagram demonstrates the timing sequence for the device HHV signals.