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LMK04828 problem in TSW38J84EVM external clock

Andre Prata
Prodigy 230 points

Hi all,

I am using TSW38J84EVM and I would like to configure the external clock capabilities using the LMK0428, which so far is not working.

I have introduced my question yesterday in High Speed Data Converters Forum in topic with the name "TSW38J84EVM external clock", and they suggested to talk with you.

In the following link of the yesterday topic you can find the explanation about the problem.

e2e.ti.com/.../537211

Thanks.

Best Regards,

Andre

  • 0
    TI__Mastermind 28550 points
    I presume your key issue is no output as OSCout? You appear to be driving OSCout correctly by removing JP2, and then setting OSCout_MUX = FB_MUX, enabling the FB_MUX and selecting CLKout6. However you do need to power up the CLKout6/7 Group. Group Powerdown at top of Clock Outputs tab = unchecked. This will allow the divider to operate to provide the lower frequency you want. The CLKout6/7 can remain powered down.

    73,
    Timothy
  • 0 in reply to Timothy T
    Prodigy 230 points
    It's working.
    Thank you Timothy!

    Best Regards,
    Andre