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DAC38J82: DAC38J82 as a DDS

Part Number: DAC38J82

We would like to use the DAC38J82 as a single-channel 48bit DDS.    

We would  use the part without any JESD connections, just a 2.5GHz clock.  

Can we shutdown  the JESD data interfaces and load the digital filter inputs with fixed values via the registers ?  Thus presenting those fixed values to the NCO?