Tool/software:
Hello,
I am trying to put PMIC to MCU only mode on our custom board. Power rail connections are as per the recommendations.
Before changing to MCU only mode, I set AMUX_OUT to low, this works. But when changed to MCU only mode, AMUX_OUT automatically goes to high. What is the reason?
Looks like MCU is not running after switching to MCU only mode. Does PMIC detected any errors/interrupts and move to safe state?
MCU related rails show at correct voltage levels, and SoC rails are zero volt. But looks like MCU is not running after changing to MCU only mode.
As JTAG connection is lost, do not know how to check what's happing in MCU. Trying to use AMUX_OUT state changes to see that MCU is working in MCU only mode. But AMUX_OUT automatically goes to high after MCU only switching and MCU is not running because, MCU cannot change the AMUX_OUT state