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Auto Clear Phase Accumulator

Category: Datasheet/Specs
Product Number: AD9954

Hello,


I have a problem with the operation of the phase accumulator clearing. My concern is as follows: I want to reset the phase accumulator, so I've set bit 13, which resets the phase accumulator at each I/O update. However, when I set this bit and perform an I/O Update, the phase of my output signal varies between 2 I/O Updates, even though the phase offset remains the same. Do you have any idea what could be the source of this problem?


Thank you in advance for any answers you can provide.

  • Hi  ,

    I believe that the phase accumulator is automatically and synchronously cleared for one cycle upon receipt of an I/O update signal. However, in your case, it took you 2 I/O Updates. May I know what your application looks like? Any operations you did prior to the auto clear phase accumulator?

    All the best,

    Jules