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USB Audio Codec(PCM2912APJT) Win7 OS S3 Wake up with not "Real Sound"

user3601872
Prodigy 20 points
Other Parts Discussed in Thread: TPA2012D2, PCM2912A

Dear Sirs


         TI Solution: USB Audio Codec(PCM2912APJT)+AMP(TPA2012D2RTJT)


         WIN7 OS


         Intel BayTrail Platform J1900


         Description: The system with USB Audio Codec PCM2912APJT, When Wake up from S3, The sound will be distortion 5~6 seconds, It's not the real sound. The real sound and distortion sound as attached vedio file. Please help analyse.Thanks~

  

  • 0
    TI__Guru** 111115 points
    Hi,

    Welcome to e2e.
    Is this issue present any time you wake up the system?
    It sounds like this is the original wake up sound but its distorted or paused between samples.
    Do you have a way to measure the signal at some points in your board? Could you inspect the output of PCM2912A to see if the distorted audio is coming from the codec or is getting distorted somehow at TPA2012D2?

    Best regards,
    -Ivan Salazar
    Texas Instruments
  • 0 in reply to Ivan Salazar
    Prodigy 20 points
    Hi Sir:
    Thanks for your reply.
    Yes, the issue is present all the time when wake up from S3.
    But I have another finding, When I uninstall the system USB XHCI Driver, the issue is disappeared.
    I think whether PCM2912A have special USB driver, or any other application? please advise.Thanks~

    Best Regards
    Baal