SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The entire system is typically awakened by an ON/OFF push button connected to the PMIC chip. This signal belongs to the VSYS - system power domain and is active low (the PMIC internal pullup ties it to VSYS). The PMIC power-up event is propagated through its NRESPWRON output pin to the device porz pad (that is, the PRM SYS_PWRON_RST signal) when the PMIC power-up sequence is achieved. The device porz input pin is held low all the time during VDD core and I/O power-up.