Hitachi SH7709S Hardware Manual page 478

Table 14.9 Serial Mode Register Settings and SCI Communication Formats
SCSMR Settings
Bit 7 Bit 6 Bit 5 Bit 2
C/A CHR PE MP
0 0 0 0
1
1 0
1
0 *
1
*
1 *
*
1 * * *
Note: Asterisks (*) indicate don't-care bits.
Table 14.10 SCSMR and SCSCR Settings and SCI Clock Source Selection
SCSMR SCSCR Settings
Bit 7 Bit 1 Bit 0
C/A CKE1 CKE0
0 0 0
1
1 0
1
1 0 0
1
1 0
1
Bit 3
STOP Mode
0 Asynchronous
1
0
1
0
1
0
1
0 Asynchronous
(multiprocessor
1
format)
0
1
* Synchronous
Clock
Mode Source
Asynchronous Internal
mode
External
Synchronous Internal
mode
External
SCI Communication Format
Data Parity Multipro-
Length Bit cessor Bit
8-bit Not set Not set
Set
7-bit Not set
Set
8-bit Not set Set
7-bit
8-bit Not set
SCI Transmit/Receive Clock
SCK
Pin Function
SCI does not use the SCK pin
Outputs a clock with frequency
matching the bit rate
Inputs a clock with frequency 16
times the bit rate
Outputs the synchronous clock
Inputs the synchronous clock
Stop Bit
Length
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
None
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