User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 721
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Bit Name Reset Access Description
11 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
10:8 RESINMUX 0x0 RW OPA0 Resistor Ladder Input Mux
These bits selects the source for the input mux to the resistor ladder
Value Mode Description
0 DISABLE Set for Unity Gain
1 OPA0INP Set for OPA0 input
2 NEGPAD NEG pad connected
3 POSPAD POS pad connected
4 VSS VSS connected
7:6 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
5:4 NEGSEL 0x0 RW OPA0 inverting Input Mux
These bits selects the source for the inverting input on OPA0
Value Mode Description
0 DISABLE Input disabled
1 UG Unity Gain feedback path
2 OPATAP OPA0 Resistor ladder as input
3 NEGPAD Input from NEG PAD
3 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
2:0 POSSEL 0x0 RW OPA0 non-inverting Input Mux
These bits selects the source for the non-inverting input on OPA0
Value Mode Description
0 DISABLE Input disabled
1 DAC DAC as input
2 POSPAD POS PAD as input
3 OPA0INP OPA0 as input
4 OPATAP OPA0 Resistor ladder as input
29.5.17 DACn_OPA1MUX - Operational Amplifier Mux Configuration
Register
Offset Bit Position
0x060
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
0x0
0
0x0
0x00
0
0
0x0
0x0
0x0
Access
RW
RW
RW
RW
RW
RW
RW
RW
RW
Name
RESSEL
NEXTOUT
OUTMODE
OUTPEN
NPEN
PPEN
RESINMUX
NEGSEL
POSSEL
Bit Name Reset Access Description
31 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
30:28 RESSEL 0x0 RW OPA1 Resistor Ladder Select
Configures the resistor ladder tap for OPA1.
Value Mode Resistor Value Inverting Mode Gain (-R2/R1) Non-inverting Mode Gain (1+(R2/
R1)
0 RES0 R2 = 1/3 x R1 -1/3 1 1/3
1 RES1 R2 = R1 -1 2
2 RES2 R2 = 1 2/3 x R1 -1 2/3 2 2/3
3 RES3 R2 = 2 x R1 -2 1/5 3 1/5