LM3S2776 Datasheet, PDF (591/785 Pages) Texas Instruments – Stellaris® LM3S2776 Microcontroller

Stellaris® LM3S2776 Microcontroller
Bit/Field
0
Name
RUN
Type
WO
Reset
0
Description
I²C Master Enable
When set, allows the master to send or receive data. See field decoding
in Table 15-4 on page 591.
Table 15-4. Write Field Decoding for I2CMCS[3:0] Field (Sheet 1 of 3)
Current ^I2CMSA[0]
State
R/S
0
ACK
X^a
I2CMCS[3:0]
STOP START
0
1
RUN
1
Description
START condition followed by SEND (master goes to the
Master Transmit state).
0
X
1
11
START condition followed by a SEND and STOP
condition (master remains in Idle state).
1
0
0
11
START condition followed by RECEIVE operation with
negative ACK (master goes to the Master Receive state).
Idle
1
0
1
11
START condition followed by RECEIVE and STOP
condition (master remains in Idle state).
1
1
0
11
START condition followed by RECEIVE (master goes
to the Master Receive state).
1
1
1
11
Illegal.
All other combinations not listed are non-operations. NOP.
X
X
0
0
1 SEND operation (master remains in Master Transmit
state).
X
X
1
0
0 STOP condition (master goes to Idle state).
X
X
1
0
1 SEND followed by STOP condition (master goes to Idle
state).
0
X
0
1
1 Repeated START condition followed by a SEND (master
remains in Master Transmit state).
0
Master
Transmit
1
X
1
1
1 Repeated START condition followed by SEND and STOP
condition (master goes to Idle state).
0
0
1
1 Repeated START condition followed by a RECEIVE
operation with a negative ACK (master goes to Master
Receive state).
1
0
1
1
1 Repeated START condition followed by a SEND and
STOP condition (master goes to Idle state).
1
1
0
1
1 Repeated START condition followed by RECEIVE
(master goes to Master Receive state).
1
1
1
1
1 Illegal.
All other combinations not listed are non-operations. NOP.
November 17, 2011
591
Texas Instruments-Production Data