we want to use a DA9063(+DA9210) pair to power a CPU Module. It is connected to a I/O Motherboard, which provides it with VSYS and a POWER ENABLE signal. VSYS will be valid before POWER ENABLE, but the exact timing is out of our control, typically we expect it to rise when all Motherboard supplies have been powered up.
Our idea was to connect POWER ENABLE to the SYS_EN input of the DA9063 and the CHIP_EN input of the DA9210, but that brings up the following issue: POWER ENABLE may already be high when the DA9063 has finished reading the OTP configuration, and SYS_EN is edge sensitive, so the DA9063 may not power up in this case.
I could not find information how long it takes for the DA9063 to reach POWERDOWN mode from NO-POWER.
Does somebody have a recommendation how to connect & configure the DA9063 so that POWER ENABLE can essentially be used as a level sensitive signal?