SLASEC2B November 2016 – February 2019 TAS2557
The device enters hardware shutdown mode if the RESETZ pin is asserted low. In hardware shutdown mode, the device consumes the minimum quiescent current from VDD and VBAT supplies. All registers loose state in this mode and I2C communication is disabled.
If RESETZ is asserted low while audio is playing, the device immediately stops operation and enters hardware shutdown mode. This may result in pops or clicks. It is recommend to first enter software shutdown before entering hardware shutdown.
When RESETZ is released, the device will enter software shutdown. A power up sequence such as with the appropriate mode selected should be executed to exit shutdown in the desired mode of operation.