Question:
Is there a partial/minimal start-up sequence that would allow SW to read the CODE_REF register but keep the rest of the DAC in a low power mode so the DAC’s self-heating is minimized?
Resolution:
Yes, you should be able to read the CODE_REF after you enable the bandgap reference:
W | 0x058 | 0x03 | Enable the band gap reference (private).
Then you should be able to continue the start-up sequence as normal.