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LMK05318B: lmk05318 XO_P and XO_N pull down issue

Robbie Ju
Prodigy 10 points
Part Number: LMK05318B

Hello,

 I am using LMK05318B part on my designed board, and I use PRIREF_P as input now,  XO_P and XO_N( Pin 31 and Pin 32) are pulled down by me.

Can I pull down the two Pin 31 and Pin 32 (XO_P and XO_N)? Please confirm 

Best regards,

Robbie Ju

  • +1
    TI__Expert 6140 points

    Hello Robbie, 

    No, XO input is required for APLL to function and device cannot output a proper clock without APLL calibrated and locked. 

    PriRef and SecRef are used for the DPLL, if DPLL function is not needed then no need for inputs there. 

    Regards,

    Amin