32.5.3 MUX Control


Bit	7	6	5	4	3	2	1	0
	INVERT	INITVAL	MUXPOS[2:0]			MUXNEG[2:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bit 7 – INVERT Invert AC Output

Writing this bit to ‘1’ enables inversion of the output of the AC. This inversion has to be taken into account when using the AC output signal as an input signal to other peripherals or parts of the system.

Bit 6 – INITVAL AC Output Initial Value

To avoid that the AC output toggles before the comparator is ready, the INITVAL can be used to set the initial state of the comparator output.

Value	Name	Description
0x0	LOW	Output initialized to ‘`0`’
0x1	HIGH	Output initialized to ‘`1`’

Bits 5:3 – MUXPOS[2:0] 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
`Other`	-	Reserved

Bits 2:0 – MUXNEG[2:0] 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`	AINN2	Negative pin 2
`0x3`	DACREF	DAC Reference
`Other`	-	Reserved

Name:	MUXCTRL
Offset:	0x02
Reset:	0x00
Property:	-

AVR64DB28/32/48/64

32.5.3 MUX Control

Bit 7 – INVERT Invert AC Output

Bit 6 – INITVAL AC Output Initial Value

Bits 5:3 – MUXPOS[2:0] Positive Input MUX Selection

Bits 2:0 – MUXNEG[2:0] Negative Input MUX Selection