Texas Instruments TM4C1294NCPDT User Manual

Register 2: I
2
C Master Control/Status (I2CMCS), offset 0x004
This register accesses status bits when read and control bits when written. When read, the status
register indicates the state of the I
2
C bus controller. When written, the control register configures
the I
2
C controller operation.
The START bit generates the START or REPEATED START condition. The STOP bit determines if
the cycle stops at the end of the data cycle or continues to the next transfer cycle, which could be
a repeated START. To generate a single transmit cycle, the I
2
C Master Slave Address (I2CMSA)
register is written with the desired address, the R/S bit is cleared, and this register is written with
ACK=X (0 or 1), STOP=1, START=1, and RUN=1 to perform the operation and stop. When the operation
is completed (or aborted due an error), an interrupt becomes active and the data may be read from
the I2CMDR register. When the I
2
C module operates in Master receiver mode, the ACK bit is normally
set, causing the I
2
C bus controller to transmit an acknowledge automatically after each byte. This
bit must be cleared when the I
2
C bus controller requires no further data to be transmitted from the
slave transmitter.
Read-Only Status Register
I2C Master Control/Status (I2CMCS)
I2C 0 base: 0x4002.0000
I2C 1 base: 0x4002.1000
I2C 2 base: 0x4002.2000
I2C 3 base: 0x4002.3000
I2C 4 base: 0x400C.0000
I2C 5 base: 0x400C.1000
I2C 6 base: 0x400C.2000
I2C 7 base: 0x400C.3000
I2C 8 base: 0x400B.8000
I2C 9 base: 0x400B.9000
Offset 0x004
Type RO, reset 0x0000.0020
16171819202122232425262728293031
reserved
ACTDMATXACTDMARX
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
BUSYERRORADRACKDATACKARBLSTIDLEBUSBSYCLKTOreserved
ROROROROROROROROROROROROROROROROType
0000010000000000Reset
DescriptionResetTypeNameBit/Field
DMA RX Active Status
DescriptionValue
DMA RX is not active0
DMA RX is active.1
0ROACTDMARX31
DMA TX Active Status
DescriptionValue
DMA TX is not active0
DMA TX is active.1
0ROACTDMATX30
1303June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller

Texas Instruments TM4C1294NCPDT Specifications

General

Brand	Texas Instruments
Model	TM4C1294NCPDT
Category	Microcontrollers
Language	English