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PCM1753: MUTE of PCM1753

yoshiki hasebe
Mastermind 6385 points
Part Number: PCM1753

Dear Sirs,

I have a question.

The description of Zero Detect condition on page 16 of the data sheet is as follows.

If the data for a given channel remains at a 0 level for 1024 sample periods (or LRCK clock periods), a zero-detect condition exists for that channel.

Is the output of the DAC muted in this condition?

Please let me know above question.

Best Regards,

Y,Hasebe

  • 0
    TI__Guru 57800 points

    Hi, Hasebe-san,

    Zero detect function of the PCM1753 does not mute the output of the DAC. When a zero is detected, the device will indicate the event with a Zero flag according to the channel where the zero data has been detected (ZEROR[pin11] or ZEROL[pin12]). These flags can be used to operate external circuitry used to  to mute the DAC.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer

  • 0 in reply to Diego Melendez
    Mastermind 6385 points

    Hello Diego-san,

    Thank you for your quickly and kindness reply.

    I understand your comments.

    Then I have one more question.

    Although I understood about ZeroDetect, DAC is not output when input data changes to without input data.

    In this case I think that the output of the DAC is stopped internally.

    Is it correct?

    Best Regards,

    Y.Hasebe