28.5.2 MUX Control A

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


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

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	AINN2	Negative pin 2
0x3	DACREF	Internal DAC reference

ATmega4808/4809

28.5.2 MUX Control A

Bit 7 – INVERT Invert AC Output

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

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