LM3S6950 Datasheet, PDF (344/524 Pages) List of Unclassifed Manufacturers – Microcontroller

Inter-Integrated Circuit (I²C) Interface
Bit/Field
2
1
0
Name
ADRACK
ERROR
BUSY
Type
R
R
R
Reset
0
0
0
Description
This bit specifies the result of the last address operation. If set, the
transmitted address was not acknowledged; otherwise, the address was
acknowledged.
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, the
transmit data not being acknowledged, or because the controller lost
arbitration.
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.
Write-Only Control Register
I2C Master Control/Status (I2CMCS)
I2C Master 0 base: 0x4002.0000
I2C Master 1 base: 0x4002.1000
Offset 0x004
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
ACK STOP START RUN
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
W
W
W
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:4
3
2
1
0
Name
reserved
ACK
STOP
START
RUN
Type
RO
W
W
W
W
Reset
0
0
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.
When set, causes received data byte to be acknowledged automatically
by the master. See field decoding in Table 14-3 on page 345.
When set, causes the generation of the STOP condition. See field
decoding in Table 14-3 on page 345.
When set, causes the generation of a START or repeated START
condition. See field decoding in Table 14-3 on page 345.
When set, allows the master to send or receive data. See field decoding
in Table 14-3 on page 345.
344
June 14, 2007
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