TM4C123GH6ZXR Datasheet, PDF (1071/1472 Pages) Texas Instruments – Tiva Microcontroller

Tiva^™ TM4C123GH6ZXR Microcontroller
Register 14: I²C Slave Control/Status (I2CSCSR), offset 0x804
This register functions as a control register when written, and a status register when read.
Read-Only Status Register
I2C Slave Control/Status (I2CSCSR)
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
Offset 0x804
Type RO, 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
OAR2SEL FBR TREQ RREQ
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
Bit/Field
31:4
3
2
Name
reserved
OAR2SEL
FBR
Type
Reset Description
RO 0x0000.000 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.
RO
0
OAR2 Address Matched
Value Description
0 Either the address is not matched or the match is in legacy
mode.
1 OAR2 address matched and ACKed by the slave.
This bit gets reevaluated after every address comparison.
RO
0
First Byte Received
Value Description
0 The first byte has not been received.
1 The first byte following the slave's own address has been
received.
This bit is only valid when the RREQ bit is set and is automatically cleared
when data has been read from the I2CSDR register.
Note: This bit is not used for slave transmit operations.
June 12, 2014
Texas Instruments-Production Data
1071