When i use two AD9914 to ouput two diffrent freqency signals meantime, sometimes appears just one of them can output signal . What's the promblem with that? the reset signal or time sequence problem or others, please advice.Thanks.
I have not seen any problem with the AD9914 that sounds like what you are experiencing. If an AD9914 is not providing an output signal, here are some things to check:
1) Is it getting a valid reference input (This can be checked by monitoring the SYNC_CLK output. If there is no signal on SYNC_CLK, then there is a problem with the reference input)
2) Is the device getting programmed? This can be checked by reading back the contents of the profile register you are trying to use.
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