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PCM2906C: USB connection for unused case

Satoshi
Guru 19645 points
Part Number: PCM2906C

When PCM2906C put on the board but don't use these function, are D+ and D- (1 pin and 2 pin) left open, no problem?

Or, are these pin require to set pulldown?

By the way, VDDI and VCCxI are supplying power 

Best regards,

Satoshi

  • 0
    TI__Guru 57800 points

    Hi, Satoshi,

    There should be no problem in leaving USB signals open from the PCM point of view. The output regulators will be working if power supply is provided to the PCM device.

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer