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LMK04826: Sync between outputs of two LMK04826 for JEDS204B

Klaus k
Prodigy 160 points
Part Number: LMK04826

Hello TI support

We have two LMK04626 EVMs and we are trying to sync the outputs, We followed the procedure from the datasheet and we are not able to sync the outputs. We see that the outputs from each EVM are synced but the outputs from two EVMs are not. at each powerup, we see different phase.

Can anybody help?

Thanks , kk

  • 0
    TI__Expert 8865 points

    Hi KK,

    For sync between multiple devices, I would recommend to use the following configuration:

    Here , the SYSREF from the first device is feeding CLKin0 of the second device. second LMK0482x is in the reclocked SYSREF mode with PLL2 in 0 delay. "Set Modes" section from the TICSpro is useful setting us this mode:

    Don't hesitate to ask further questions if you see any issue.

    Best regards

    Puneet

  • 0 in reply to Puneet Sareen
    Prodigy 160 points
    Thanks Puneet for reply. We will try this. Looks like we need to rework one EVM or is there a way to use the CLKin1 intead of OSCin for PLL2 for secon EVM?