Module Sideband and GPIO Control Signals
Active low output from the expansion board to the module that controls the power state of the module and, by extension, the expansion board, see Power Delivery, Signaling, and Reset for how the PMIC_PWRBTN_N signal controls the module power state based on duration of the low signal.
Active low signal output from the module to the expansion board, an expansion board may use this signal to control when the module strapping option signals are driven by the expansion board circuitry. Refer to Power Delivery, Signaling, and Reset for additional details of the PMIC_RESET_N signal.
Leave the PMIC_RESET_N signal floating if not used on the expansion board.
This power good signal transitions HIGH after the VDD1 and VDD3 supplies are within specification. Expansion board and mezzanine board designs must ensure that circuitry does not interfere with the state of the compute module boot strap pins. See for an example isolation circuit
USB-C OTG Load Switch
Active high, enable 5 V supply for USB OTG
Active high or low, Type-C mux port selection signal
USB-C VCONN Switch
Active high, module VCONN input voltage load switch control signal
Active high, indicator for module that a USB OTG cable is connected