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AD9910 Profile Control Read vs Write

Question asked by jm6492 on Jun 3, 2016
Latest reply on Jun 3, 2016 by KennyG

I am working on a project using the external profile control pins to rapidly change the output frequency of the DDS. I noticed that when I manually select profiles using the eval software interface, the selected profile can be "read off" by measuring a 3-bit output from the PROFILE0, PROFILE1 and PROFILE2 pins. However, it is also possible to "write" 3-bit values to these pins, and externally specify the profile number. It seems odd that I would be able to simultaneously read and write to these pins. Is there a setting (via a jumper or something) that would allow me to specify whether I want to read or write to the profile control pins?