There are three device enable or reset
options to use with the EVM.
- Supervisor circuitry option.
This is the default configuration on the EVM. The enable (EN) signal is held
low until the power good (REG_PG) from the 3.3 V voltage regulator reaches a
stable high voltage level then released high.
- RC timing option. C26
external capacitor and internal resistor are used ton control the EN pin
ramp time after device is powered on. C26 is a DNI (Do Not Install
option) by default. C26 needs to be installed and R77 needs to be
uninstalled to enable this option.
- External control option. A
push button (SW1) is provided to manual control of the EN pin.