Unlike Auto mode, which still requires a host to initialize the TPS23882B operation through a a series of I²C commands, there is no host or I²C communication required when the TPS23882B in configured in autonomous mode.

Connecting a resistor between the AUTO pin and GND based on the table below Table 10-1 enables autonomous mode and configure all of the ports to the same Power Allocation settings. In the event a PD is connected with a higher requested class than the autonomous mode configuration, the port powers demote the PD to the selected autonomous mode configuration power level. The port automatically performs detection and classification (if valid detection occurs) continuously on all ports. Port power is automatically turned on based on Power Allocation settings in register 0x29 if a valid classification is measured.