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How to do proper Aux in mute for ADAU 1361?

Question asked by Poorni on Oct 3, 2016
Latest reply on Oct 5, 2016 by DaveThib



With EVAL-ADAU1361 Z board, I am trying  drive zeros in ADC line by muting the Aux in.

I have configured the codec for Stereo, capless out, Master configuration.

Like INN & INP, the aux in does not have a volume register to mute the aux in.

So I tried by muting the MX1AUXG[2:0] & MX2AUXG[2:0] (writing to 0x00 to locations (0x400D & 0x400B))

Still there are glitches at the line though if there is no Aux in cable connected to IN3/4 jack in.

Same persists if disable both the mixer.

Is there any way, I could mute the aux in & drive zeros in ADC line indicating there is no auxin & mute?