35.5.7 Op Amp n Resistor Ladder Multiplexer

Name:	OPnRESMUX
Offset:	0x12 + n*0x08 [n=0..2]
Reset:	0x00
Property:	-


Bit	7	6	5	4	3	2	1	0
	MUXWIP[2:0]			MUXBOT[2:0]			MUXTOP[1:0]
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

Bits 7:5 – MUXWIP[2:0] Multiplexer for Wiper

This bit field selects the resistor ladder wiper (potentiometer) position.

Value	Name	Description
0x0	WIP0	R1 = 15R, R2 = 1R
0x1	WIP1	R1 = 14R, R2 = 2R
0x2	WIP2	R1 = 12R, R2 = 4R
0x3	WIP3	R1 = 8R, R2 = 8R
0x4	WIP4	R1 = 6R, R2 = 10R
0x5	WIP5	R1 = 4R, R2 = 12R
0x6	WIP6	R1 = 2R, R2 = 14R
0x7	WIP7	R1 = 1R, R2 = 15R

Bits 4:2 – MUXBOT[2:0] Multiplexer for Bottom

This bit field selects the analog signal connected to the bottom resistor in the resistor ladder.

Note:

When selecting LINKOUT for OP0, MUXBOT is connected to the output of OP2.

Value	Name	Description
0x0	OFF	Multiplexer off
0x1	INP	Positive input pin for OPn
0x2	INN	Negative input pin for OPn
0x3	DAC	DAC output (DAC and DAC output buffer must be enabled)
0x4	LINKOUT	OP[n-1] output⁽¹⁾
0x5	GND	Ground
Other	-	Reserved

Bits 1:0 – MUXTOP[1:0] Multiplexer for Top

This bit field selects the analog signal connected to the top resistor in the resistor ladder.

Value	Name	Description
0x0	OFF	Multiplexer off
0x1	OUT	OPn output
0x2	VDD	V_DD
Other	-	Reserved

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