SLOS948 February 2019 TAS6424M-Q1
For load-impedance detection, use the following test procedure:
The device ramps the signal up and down automatically to prevent pops and clicks.
When the test is complete the channel reporting register indicates the status change from the AC diagnostic mode to the Hi-Z state. The detected impedance is stored in the appropriate I2C register.
The hexadecimal register value must be converted to decimal and used to calculate the impedance magnitude using the following equation: