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PCM1754: MCLK to 2 devices layout

Chiahao Chang
Prodigy 30 points
Part Number: PCM1754


My CPU's MCLK is not as common CPU's design as clock output, it is clock input.

So my configuration is oscillator need to output to CPU and PCM1754.

Any suggestion to layout consideration? For example, daisy chain or T-branch or doesn't matter?

  • 0
    TI__Guru 54983 points

    Hi Chiahao,

    This setup should be good, though I would take care to layout the high frequency trace so that it does not interfere with other signals.  You could also consider sending the oscillator output to the CPU, then having an dedicated output of the CPU for the MCLK.  That way if you change or reduce the MCLK frequency if you desire. But you initial configuration should be ok.

    Thanks!

    Paul