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About power supply of PCM2912A and external oscillator.

Satoshi
Guru 19495 points
Other Parts Discussed in Thread: PCM2912A

Customer is considering PCM2912A and external crystal oscillator.

Can crystal oscillator's Vcc(3.3V) input from PCM2912A's any power line?

(Same line of VCCP, VCCL, VCCR, VCCA, or VDD)

Or, is it occur any problem?

(ex. Power up sequence, noise, etc)

Best regards,

Satoshi

  • 0
    TI__Guru* 95355 points
    HI Satoshi-san,

    I'm sorry I can't fully understand your questions. Could you give a further explanation of your question/issue?
    Are you trying to use an external clock source? (not using a crystal connected to XTI/XTO)
    PMC2912A is a USB-powered device, VCCx and VDD voltages will be internally generated.

    Best regards,
    -Ivan Salazar
    Texas Instruments
  • 0 in reply to Ivan Salazar
    Guru 19495 points
    Ivan-san

    Thank you for reply.
    And, sorry for mistake.

    I understood that power supply is internally generated.
    Customer will use crystal oscillator.

    Best regards,
    Satoshi