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AD9957  eval board pll could not locked.

Question asked by abc2005211 on Sep 29, 2016
Latest reply on Sep 29, 2016 by abc2005211

when using ad9957 eval board , i disconect c51 c52, and set the W7 jumpler to select XTAL , short the R4 and R11.

 

But the AD9957 eval software showed the PLL is not locked .And when i watched the sync_clk , the frequency is not fixed and  float.

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