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 RW, reset 0x0000.0000
16171819202122232425262728293031
reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
VREFreservedRNGENreserved
RWRWRWRWRORORORORWRWROROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
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.
0x0000.0ROreserved31:10
Resistor Ladder Enable
DescriptionValue
The resistor ladder is unpowered.0
Powers on the resistor ladder. The resistor ladder is connected
to V
DDA
.
1
This bit is cleared at reset so that the internal reference consumes the
least amount of power if it is not used.
0RWEN9
Resistor Ladder Range
DescriptionValue
The ideal step size for the internal reference is VDDA / 29.4.0
The ideal step size for the internal reference is VDDA / 22.12.1
0RWRNG8
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.
0x0ROreserved7:4
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
22-2 on page 1656 for some output reference voltage examples.
0x0RWVREF3:0
1663June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller
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