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AD9129 DLL Problem

Question asked by patel on Jul 29, 2016
Latest reply on Aug 1, 2016 by patel

I am trying to get the AD9129 working on a KCU105 board.  I got almost everything working (verified signal via o-scope), but I am unable to get the DLLs phase to lock properly.  Everytime I read 0x0E, I get a response of 0x85.  I have odelay blocks (FPGA) on the DCI line and it is software programmable.  I have incremented every value for the delay block, and I changed the DCI's phase by 45 degree increments.  I just can't get the DLL's phase to be correct.

 

Can anyone help?  danf have any suggestion?

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