LM3S828 Datasheet, PDF (456/526 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Inter-Integrated Circuit (I²C) Interface
Bit/Field
3
2
1
0
Name
DATACK
ADRACK
ERROR
BUSY
Type
RO
RO
RO
RO
Reset
0
0
0
0
Description
Acknowledge Data
This bit specifies the result of the last data operation. If set, the
transmitted data was not acknowledged; otherwise, the data was
acknowledged.
Acknowledge Address
This bit specifies the result of the last address operation. If set, the
transmitted address was not acknowledged; otherwise, the address was
acknowledged.
Error
This bit specifies the result of the last bus operation. If set, an error
occurred on the last operation; otherwise, no error was detected. The
error can be from the slave address not being acknowledged or the
transmit data not being acknowledged.
I²C Busy
This bit specifies the state of the controller. If set, the controller is busy;
otherwise, the controller is idle. When the BUSY bit is set, the other status
bits are not valid.
Writes
I2C Master Control/Status (I2CMCS)
I2C 0 base: 0x4002.0000
Offset 0x004
Type WO, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
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
ACK STOP START RUN
Type WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
WO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:4
3
2
1
Name
reserved
ACK
STOP
START
Type
WO
WO
WO
WO
Reset
0x00
0
0
0
Description
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.
Data Acknowledge Enable
When set, causes received data byte to be acknowledged automatically
by the master. See field decoding in Table 13-4 on page 457.
Generate STOP
When set, causes the generation of the STOP condition. See field
decoding in Table 13-4 on page 457.
Generate START
When set, causes the generation of a START or repeated START
condition. See field decoding in Table 13-4 on page 457.
456
June 18, 2012
Texas Instruments-Production Data