Three discrete hardware pins are available for real-time control and indication of device status.

1. FAULT pin: This active-low open-drain output pin indicates the presence of a fault condition which requires the device to go into the Hi-Z mode. On assertion of this pin, the device has protected itself and the system from potential damage. The system can read the exact nature of the fault via I²C with the exception of PVDD undervoltage faults below POR, in which case the I²C bus is no longer operational.
2. STANDBY pin: Assertion of this active-low pin sends the device into a complete shutdown, limiting the current draw. Load-dump protection is supported. I²C is inactive and non-blocking (does not pull I²C bus low) and the device registers are reset.
3. MUTE pin: On assertion of this active-high pin, the device is in mute mode. The output pins stop switching and audio does not pass from the input to the output. To place the device back into play mode, deassert this pin. The MUTE pin should be asserted low when the device is in STANDBY.