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→Power Supply Unit (PSU) and recommended power-up sequence
(1) For BORA SOM this step is not mandatory and CB_PWR_GOOD can be left floating. CB_PWR_GOOD is provided to prevent, if necessary, BORA's PSU to turn on during ramp of carrier board 3.3VIN rail. Depending on carrier board's PSU design, this may lead to undesired glitches during ramp-up.
For BORA Lite SOM, the CB_PWR_GOOD has to be connected to the proper carrier board circuitry or with a pull-up to 3.3VIN (if the power domain is monotone)for always-on operation
=== XCN15034 and power-off sequence ===
