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LMK03001CEVAL: Clock & timing forum

Part Number: LMK03001CEVAL


Our customers are evaluating performance on EVM and TCS Pro but are not getting the correct output frequency.

I think the register settings are correct, but could you please check the settings below?

OSC is 19.44MHz on the board.

Our customer setting is 123.12MHz, but the measurement result is 113.7MHz.
And the boards they designed have similar errors.

Best regards,



  • Hello,

    You can try Write All Registers (in the Raw Registers page). Shortcut for it is Ctrl + L. If it doesn't work, then I'd start from default configuration (in the tool bar). Since the there's no default configuration for 19.44MHz OSCin, I'd use a signal generator to inject signal into this SMA and turn off the on-board oscillator.