LM3S2911 Datasheet, PDF (488/642 Pages) Texas Instruments – Stellaris® LM3S2911 Microcontroller

Inter-Integrated Circuit (I²C) Interface
Table 13-5. Write Field Decoding for I2CMCS[3:0] Field (Sheet 1 of 3) (continued)
Current ^I2CMSA[0]
State
R/S
ACK
I2CMCS[3:0]
STOP START
Description
RUN
X
0
0
0
1 RECEIVE operation with negative ACK (master remains
in Master Receive state).
X
X
1
0
0
STOP condition (master goes to Idle state).^b
X
0
1
0
1 RECEIVE followed by STOP condition (master goes to
Idle state).
X
1
0
0
1 RECEIVE operation (master remains in Master Receive
state).
X
1
1
0
1 Illegal.
1
Master
Receive
0
0
1
1 Repeated START condition followed by RECEIVE
operation with a negative ACK (master remains in Master
Receive state).
1
0
1
1
1 Repeated START condition followed by RECEIVE and
STOP condition (master goes to Idle state).
1
1
0
1
1 Repeated START condition followed by RECEIVE
(master remains in Master Receive state).
0
X
0
1
1 Repeated START condition followed by SEND (master
goes to Master Transmit state).
0
X
1
1
1 Repeated START condition followed by SEND and STOP
condition (master goes to Idle state).
All other combinations not listed are non-operations. NOP.
a. An X in a table cell indicates the bit can be 0 or 1.
b. In Master Receive mode, a STOP condition should be generated only after a Data Negative Acknowledge executed by
the master or an Address Negative Acknowledge executed by the slave.
488
June 19, 2012
Texas Instruments-Production Data