A power source must be available at either the DC input jack or the USB Type-C connector, which both connect to the power mux, before power on can be initiated.

Closing SW2 pulls PMIC_PWRBTN_N low, enabling the module to begin the power-on logic sequence. PMIC_PWRBTN_N is also connected to the module on J2 pin 9.

Refer to Power Delivery, Signaling, and Reset for power button behaviors.

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