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Table 10.14 shows the 12 formats that can be selected in asynchronous mode. The format is
selected in the serial mode register (SMR).
Table 10.14 Serial Communication Formats in Asynchronous Mode
SMR Settings
CHR
PE
MP
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
0
0
1
*
0
*
1
1
1
*
1
1
*
Legend:
S:
Start bit
STOP: Stop bit
P:
Parity bit
MPB: Multiprocessor bit
Note: * Don't care
Serial Communication Format and Frame Length
STOP
1
2
0
S
1
S
0
S
1
S
0
S
1
S
0
S
1
S
0
S
1
S
0
S
1
S
3
4
5
6
8-bit data
8-bit data
8-bit data
8-bit data
7-bit data
7-bit data
7-bit data
7-bit data
8-bit data
8-bit data
7-bit data
7-bit data
7
8
9
10
STOP
STOP STOP
P
STOP
P
STOP STOP
STOP
STOP STOP
P
STOP
P
STOP STOP
MPB STOP
MPB STOP STOP
MPB STOP
MPB STOP STOP
11
12
245
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