29.5.2 MUX Control A

ACn.MUXCTRLA controls the analog comparator MUXes.
Name: MUXCTRLA
Offset: 0x02
Reset: 0x00
Property: -

Bit 76543210 
 INVERT  MUXPOS[1:0] MUXNEG[1:0] 
Access R/WR/WR/WR/WR/W 
Reset 00000 

Bit 7 – INVERT Invert AC Output

Writing a ‘1’ to this bit enables inversion of the output of the AC. This effectively inverts the input to all the peripherals connected to the signal and affects the internal status signals.

Bits 4:3 – MUXPOS[1:0] Positive Input MUX Selection

Writing to this bit field selects the input signal to the positive input of the AC.
Value Name Description
0x0 AINP0 Positive pin 0
0x1 AINP1 Positive pin 1
0x2 AINP2 Positive pin 2
0x3 AINP3 Positive pin 3

Bits 1:0 – MUXNEG[1:0] Negative Input MUX Selection

Writing to this bit field selects the input signal to the negative input of the AC.
Value Name Description
0x0 AINN0 Negative pin 0
0x1 AINN1 Negative pin 1
0x2 VREF Voltage Reference
0x3 DAC DAC output Instance n of the AC will use instance n of the DAC: for example, AC0 will use DAC0 and AC1 will use DAC1