AnsweredAssumed Answered

AD9528 can't work steady

Question asked by jobsa on Nov 3, 2017
Latest reply on Nov 13, 2017 by jobsa

    hello,

    I configure ad9528,Readback registers (0x0508 and 0x0809) cannot be read normally. I monitor 0x0508[5] for the VCXO status indicator which is 0, and 0x0508[2] for the RefA status indicator which is 1. The value of 0x0509[0] for VCO calibration is 0;   I confirm that register 0x000C is indeed 0x56.

   my vcxo is 100MHz, RFA is 100MHz, output is 200MHz, I only change parameters of api:

ad9528pllSettings_t  clockpllSettings = 

{

   100000000.           //30720000

   1,

   3,

   0,

   1,

   0,

   100000000,          //122880000

   2,

   4

}

I do not change other parameters of api  .

 

somtime, occasionally I monitor 0x0508[5] for the VCXO status indicator which is 1, and 0x0508[2] for the RefA status indicator which is 1, and the leds of status0 and status1 are light.  but in major time , I monitor 0x0508[5] for the VCXO status indicator which is 0, and 0x0508[2] for the RefA status indicator which is 1. The value of 0x0509[0] for VCO calibration is 0, ad9528 can't work.

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