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LM3S6G11 Datasheet, PDF (725/827 Pages) Texas Instruments – Stellaris® LM3S6G11 Microcontroller
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OBSOLETE: TI has discontinued production of this device.
Stellaris® LM3S6G11 Microcontroller
Register 4: Analog Comparator Reference Voltage Control (ACREFCTL), offset
0x010
This register specifies whether the resistor ladder is powered on as well as the range and tap.
Analog Comparator Reference Voltage Control (ACREFCTL)
Base 0x4003.C000
Offset 0x010
Type R/W, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
EN
RNG
reserved
VREF
Type RO
RO
RO
RO
RO
RO
R/W
R/W
RO
RO
RO
RO
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:10
9
8
Name
reserved
EN
RNG
Type
RO
R/W
R/W
Reset Description
0x0000.0
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0
Resistor Ladder Enable
Value Description
0 The resistor ladder is unpowered.
1 Powers on the resistor ladder. The resistor ladder is connected
to VDDA.
This bit is cleared at reset so that the internal reference consumes the
least amount of power if it is not used.
0
Resistor Ladder Range
Value Description
0 The resistor ladder has a total resistance of 31 R.
1 The resistor ladder has a total resistance of 23 R.
7:4
reserved
RO
0x0
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
3:0
VREF
R/W
0x0
Resistor Ladder Voltage Ref
The VREF bit field specifies the resistor ladder tap that is passed through
an analog multiplexer. The voltage corresponding to the tap position is
the internal reference voltage available for comparison. See Table
16-3 on page 720 for some output reference voltage examples.
July 24, 2012
725
Texas Instruments-Production Data
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