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Peculiar error with RAM in AD9910

Question asked by OUCraig on Apr 27, 2016
Latest reply on Apr 28, 2016 by LouijieC

The situation  I am experiencing is, I load RAM to the AD9910 from a .txt file in raw binary (addressing frequency) next I trigger the I/O Update externally repeatedly and everything seems to be working fine as I watch the signal on a spectrum analyser. When I upload new RAM however the trigger seems to be calling the old RAM again so I read RAM to file to see what is going on and what returns is, for lack of a better word, nonsense at this point the trigger no longer calls either profile.

The board can be returned to sanity using a software reset and the problem does not occur if a software reset is performed before the next RAM profile is uploaded, this means the problem is avoidable but is there a fix to the problem.