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Frequently Asked Question

I would like to update the FTW of my DDS, but only a single byte of the FTW needs to change. Can the frequency tuning word of a DDS be partially updated a byte at a time?

On some of the ADI DDS' which have a parallel data interface and which are being used in parallel mode it is possible to address individual bytes in the frequency register. However, the serial mode interface does not support sub-register (individual byte) addressing of the FTW.