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When internal clock is selected:
The SCI operates on the baud rate generator clock and a serial clock is output off-chip
When external clock is selected:
The on-chip baud rate generator is not used, and the SCI operates on the input serial clock
Table 16-8 SMR Settings and Serial Transfer Format Selection
SMR Settings
Bit 7
Bit 6
Bit 2
C/A
CHR
MP
0
0
0
1
0
1
1
1
—
—
616
Bit 5
Bit 3
PE
STOP Mode
0
0
Asynchronous
mode
1
1
0
1
0
0
1
1
0
1
—
0
Asynchronous
mode (multi-
processor format)
—
1
—
0
—
1
—
—
Clocked
synchronous mode
SCI Transfer Format
Multi
Data
Processor
Length
Bit
8-bit data
No
7-bit data
8-bit data
Yes
7-bit data
8-bit data
No
Parity
Stop Bit
Bit
Length
No
1 bit
2 bits
Yes
1 bit
2 bits
No
1 bit
2 bits
Yes
1 bit
2 bits
No
1 bit
2 bits
1 bit
2 bits
None
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