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Audio channel swap runtime

Jemish Patel
Intellectual 740 points

Hi All,

We are using DM6467T in our project. We have two boards.  One of them have ADV7441A decoder and other have GS2971A decoder. When we run audio capture test it capture audio successfully.  But after sometime audio channels get swapped (right and left channels). This is happening randomly. Sometimes it takes 2 or 3 hrs to reproduce sometimes it takes 2 or 3 days to reproduce. Is it happening because of misconfiguration of codec chip? Or is it because of misconfiguration on McASP registers? As it is happening on both boards so we are suspecting this is happening because of McASP register misconfiguration.  I have attached log of all McASP registers before (2146.before_issue.dat) and after  (2425.after_issue.dat) reproduction of issue. We started with left channel only and after some time audio swapped to right channel. Please guide us regarding this issue as it is very  critical for us.

Regards,

Jemish

2146.before_issue.dat

2425.after_issue.dat

  • 0
    Intellectual 740 points

    Hi All,

    In the above problem adding inputs from my side. I register interrupt AINT29 and enable it for RSYNCERR ( bit no 1: reg : RINTCTL (0x7c) Unexpected receive frame sync interrupt enable bit.) I don't able to get interrupt when problem reproduced (When audio channel get swapped from right<->left). Here we are using AACHEV1 encoder. So now I suspect encoder for this problem. Somebody please tell me am I debugging right direction. Please provide me some hint for this problem.

    Regards,

    Jemish