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AD9910 modifing profile when running

Question asked by carloalberto1976 on Oct 24, 2011
Latest reply on Oct 28, 2011 by DSB

Dear All,

 

I am trying to program the AD9910 to exploit each functionality.

I have a question regarding Profile pins control. Can I modify the contents of a profile when an onther profile is running? I am pretty sure that I can do it. But there are any "unsaid" restriction in doing it?

 

When I switch the profile, often the DDS does not change and more often the DDS1 seems to stop working completely.

I am pretty sure that I am sending correctly the word required so I am doubtful about the way ("timing") I update the profile pins.

To change the profile I am using a shiftregister 3 bits without latch and I am writing slowly, so the DDS can detect each single profile pins change before to reach the required profile, but sometime got crisis

Doea anybody have some suggestions?

 

Cheers

Carlo

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