EFM32WG Datasheet, PDF (721/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

Bit
11
10:8
7:6
5:4
3
2:0
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Name
Reset
Access Description
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
RESINMUX
0x0
RW
OPA0 Resistor Ladder Input Mux
These bits selects the source for the input mux to the resistor ladder
Value
0
1
2
3
4
Mode
DISABLE
OPA0INP
NEGPAD
POSPAD
VSS
Description
Set for Unity Gain
Set for OPA0 input
NEG pad connected
POS pad connected
VSS connected
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
NEGSEL
0x0
RW
OPA0 inverting Input Mux
These bits selects the source for the inverting input on OPA0
Value
0
1
2
3
Mode
DISABLE
UG
OPATAP
NEGPAD
Description
Input disabled
Unity Gain feedback path
OPA0 Resistor ladder as input
Input from NEG PAD
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
POSSEL
0x0
RW
OPA0 non-inverting Input Mux
These bits selects the source for the non-inverting input on OPA0
Value
0
1
2
3
4
Mode
DISABLE
DAC
POSPAD
OPA0INP
OPATAP
Description
Input disabled
DAC as input
POS PAD as input
OPA0 as input
OPA0 Resistor ladder as input
29.5.17 DACn_OPA1MUX - Operational Amplifier Mux Configuration
Register
Offset
0x060
Bit Position
Reset
Access
Name
Bit
31
30:28
Name
Reset
Access Description
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
RESSEL
0x0
RW
Configures the resistor ladder tap for OPA1.
OPA1 Resistor Ladder Select
Value
0
1
2
3
Mode
RES0
RES1
RES2
RES3
Resistor Value
R2 = 1/3 x R1
R2 = R1
R2 = 1 2/3 x R1
R2 = 2 x R1
Inverting Mode Gain (-R2/R1) Non-inverting Mode Gain (1+(R2/
R1)
-1/3
1 1/3
-1
2
-1 2/3
2 2/3
-2 1/5
3 1/5
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
721
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