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Original question:

PCM9211: automatically mute the DIR in case non-PCM?

PCM9211: if device will automatically mute the DIR after detecting non-PCM?

Kian Lin
Intellectual 2250 points
Part Number: PCM9211

Hi team,

I have a same question as this thread:  https://e2e.ti.com/support/audio-group/audio/f/audio-forum/650937/pcm9211-automatically-mute-the-dir-in-case-non-pcm?tisearch=e2e-sitesearch&keymatch=non-pcm#

This thread hasn't been responded. So I initiate a new thread to ask this question: If PGM9211 will automatically mute the DIR after detecting non-PCM? Are there any description in datasheet(I didn't find it)

Thanks

BRs

Kian

  • 0
    TI__Mastermind 31605 points

    Hi Kian,

    No it won't mute the DIR on its own. The design of the device is such that a non-PCM detection would send an interrupt which can be used by an SoC to mute the device either with a reset signal or a register write. Refer to section 7.3.8.6.8

    Best regards,
    Jeff McPherson