AnsweredAssumed Answered

AD9913 profiles configuration

Question asked by fredvg on Jun 28, 2016
Latest reply on Jun 29, 2016 by KennyG

Hello,

I can see  in my design strange behavior linked to the profiles configuration on AD9913.The component configuration is:

16MHz input multiplied by 15 = 240MHz, switching mode, serial configuration (SPI 200kbps)

 

The issue is:

 

I configure profiles 0,1,2 following steps below:

RESET DDS

Config of profile 0

IOupdate

RD check

Config of profile 1

IOupdate

RD check profile 1

Config of profile 2

IOupdate

RD check profile 2

 

I systematically read profile0 configuration in profile 1 and 2 registers even if:

- I program profiles 0, 1, 2 with different values

- OR I just program profile 0

 

I have not checked content of other profiles.

RD check is done on oscilloscope, adresses are correct. I program successfully CFR1 and CFR2.

 

MANY THANKS for feedback....

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