SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
Summarizing this section: The POK block diagram shows a comparator with:
Element of POK | Point of control |
---|---|
resistor divider | *POK*_CTRL registers |
hysteresis enable | |
comparator enable | *PRG*_CTRL |
mux on the output | *POK*_CTRL registers |
The output of the POR / PRG_PP / POK voltage monitoring goes to the ESM. Each undervoltage / overvoltage condition has its own bit in the ESM, and the ESM can be programmed to respond to these bits as an interrupt and/or to generate an external signal to the system (see PRG Hardware Requests for a mapping POK to ESM).