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AD9958 linear sweep phase issues

Question asked by Nastyface on Aug 17, 2016
Latest reply on Aug 24, 2016 by JLKeip

We are trying to use the AD9958 linear phase sweep working but the information in the datasheet does not provide sufficent details and actually has some omissions.  Fig 37 of the datasheet requires a more detailed explanation for our purposes.  Specifically, how does the sweep accumulator behave when an IO update is issed which does not chnage the profile pins or any any of the registers except E0 and S0?