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LMK04828: Questions about LMK04828 distribution mode

Kim JoonHyun
Prodigy 60 points
Part Number: LMK04828

Is it possible to output 1.2GHz LVDS clock with 1.2GHz LVDS clock input in distribution mode?(See 9.4.5 on page 55 of the datasheet)

At this time, does SYSREF also output?

Can I do the above actions if I input only the CLKin/Fin,CLKin1*/Fin* pin?

Do I have to input both the CLKin/Fin,CLKin1*/Fin* pin and the CLKin0,CLKin0* for the above operation?

  • 0
    TI__Genius 12550 points

    Hi Kim,

    Kim JoonHyun said:
    Is it possible to output 1.2GHz LVDS clock with 1.2GHz LVDS clock input in distribution mode?(See 9.4.5 on page 55 of the datasheet)

    Yes, LMK04828 can operate in distribution mode and will produce same output frequency as input after setting DCLKoutX_MUX in bypass mode.

    Kim JoonHyun said:
    At this time, does SYSREF also output?

    It will produce the SYSREF output frequency based on SYSREF divider value.

    Kim JoonHyun said:
    Can I do the above actions if I input only the CLKin/Fin,CLKin1*/Fin* pin?

    CLKin1, CLKin1* input only sufficient to distribute DCLK and SYSREF outputs. 

    CLKin0 input can only distribute at SYSREF and/or OSCout pins.