Hitachi SH7032 Hardware Manual page 408

Synchronous Mode:
• The communication format has a fixed eight-bit data length.
• In receiving, it is possible to detect overrun errors (ORER).
• An internal or external clock can be selected as the SCI clock source.
 When an internal clock is selected, the SCI operates using the on-chip baud rate generator,
and outputs a serial clock signal to external devices.
 When an external clock is selected, the SCI operates on the input serial clock. The on-chip
baud rate generator is not used.
Table 13.8 Serial Mode Register Settings and SCI Communication Formats
Bit 7:
Mode C/A
Asynchronous 0
Asynchronous
(multiprocessor
format)
Synchronous 1
Note: Asterisks (*) in the table indicate don't-care bits.
SMR Settings
Bit 6: Bit 5: Bit 2:
CHR PE MP
0 0 0
1
1 0
1
0 1
*
*
1
*
*
* * *
SCI Communication Format
Bit 3: Data Parity
STOP Length Bit
0 8-bit Absent
1
0 Present
1
0 7-bit Absent
1
0 Present
1
0 8-bit Absent
1
0 7-bit
1
* 8-bit
Multipro- Stop Bit
cessor Bit Length
Absent 1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
Present 1 bit
2 bits
1 bit
2 bits
Absent None
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