Datasheet

Register 1: 1-Wire Control and Status (ONEWIRECS), offset 0x000
The 1-Wire Control and Status (ONEWIRECS) register contains the control and status bits for the
1-Wire bus, including active state and passive detection. The OP field is written to start an operation.
If executing a write or a write/read, the Bn field of the 1-Wire Data Write (ONEWIREDATW) register
must be written first before programming the OP field.
1-Wire Control and Status (ONEWIRECS)
Base 0x400B.6000
Offset 0x000
Type RW, reset 0x0000.0000
16171819202122232425262728293031
BSIZEreservedALTPUSEALT
RWRWRWRORORORORORORORORORORORWRWType
0000000000000000Reset
0123456789101112131415
RSTOPSZODRVLSAMSKATRBUSYNOATRSTUCKreserved
RWRWRWRWRWRWRWRWROROROROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
Two Wire Enable
DescriptionValue
Function in standard 1-Wire mode, using only the OWIRE signal
for both input and output.
0
Use the OWIRE signal for the input and the OWALT signal for the
output.
1
0RWUSEALT31
Alternate Polarity Enable
DescriptionValue
Output pin is driven low to drive 1-wire line low.0
Output pin is driven high to drive 1-Wire line low (that is, the
output pin is connected to an NFET).
1
0RWALTP30
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.
0x000ROreserved29:19
1517December 13, 2013
Texas Instruments-Advance Information
Tiva
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TM4C129XNCZAD Microcontroller