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PCM1863: requirements for crystal?

Scott Brenneman
Genius 3275 points
Part Number: PCM1863

We're trying to source a 24.576 MHz crystal to use with the PCM1863.  The datasheet appears to be silent on things like required tolerance, drift and ESR.  Is that info available?

Thanks,
Scott

  • 0
    TI__Mastermind 23050 points

    Hi Scott,

    Unfortunately we don't have that info, but given the device has an internal PLL I think if you use a crystal that is spec'd under 100ppm tolerance you should be fine. That said, if you are running at a standard audio rate in slave mode then you don't actually need an SCKI as the device has an autoclock configuration feature and can generate internal clocks from BCLK.

    Best,

    Zak

  • 0 in reply to Zak Kaye
    Genius 3275 points

    Thank you Zak.  It's good to know that slave mode doesn't require a crystal.  Sometimes we're in master mode, so now we're looking at the other end of the link.

    Scott