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fmcomms1 no-os mmcm setting

Question asked by timmy on Oct 14, 2017
Latest reply on Oct 18, 2017 by AdrianC

Hi,

 

   I modify the reference design by adding a regional buffer (BUFR) in front of the mmcm of DDS core.

And I set the parameter BUFR_DIVIDE 4 to reduce the input clock frequency 4 times. And in SDK, I change the parent_rate in function mmcm_set_rate into 1/4 times to match my PL modification. But the result is wrong.

 

   What should I do more in SDK  or vivado to get the correct result?

   

 

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