44.8.2 Control B

Name: CTRLB
Offset: 0x01
Reset: 0x02
Property: PAC Write-Protection

Bit 76543210 
      REFSEL[1:0]DIFF 
Access R/WR/WR/W 
Reset 010 

Bits 2:1 – REFSEL[1:0] Reference Selection

This bit field selects the Reference Voltage for both DACs.

This bit field selects the Reference Voltage for DAC0

ValueNameDescription
0x0 VREFAU Unbuffered external voltage reference (not buffered in DAC, direct connection)
0x1 VDDANA Voltage supply
0x2 VREFAB Buffered external voltage reference (buffered in DAC)
0x3 INTREF Internal voltage reference

Bit 0 – DIFF Differential Mode Enable

This bit defines the conversion mode for both DACs.

ValueDescription
0 Single mode
1 Differential mode