SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
ADI_4_AUX:MUX2.DAC_VREF_SEL sets the DAC reference as:
The ADI_4_AUX:MUX2.DAC_VREF_SEL register is only allowed to select one reference at a time. The reference gives the output voltage range.