CCS/UCD3138: Absolute Value Register

I believe there's actually a multiplication by a constant and an add to convert the ~1 mV resolution of the ADC to the ~1.6 mV of the DAC and combine them.  I think that it should all make sense if the everything is running, and is all steady state.  I agree that what you are seeing doesn't make sense.  

Bear in mind that the memory debugger is pretty slow.  It reads everything 1 byte at a time, and then sends things out over the PMBus. I believe that each PMBus message only handles one word.  And there is also a delay with the USB interface that varies from PC to PC.  So you're definitely not getting an instantaneous snapshot of all the memory locations.  

If it is steady state, please let me know your setup.