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If I put my I2C audio device in shutdown, will it drag my I2C bus down?

No, we use a special technique on the SDA and SCL lines to prevent the device from dragging down the bus when the device is put in shutdown or power is removed.

 

The above applies to TPA5x, TPA6x, TPA2x, and TAS57x families. Other devices should be verified by the user.