HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 377

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

Clocked 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.
Table 13.8 Serial Mode Register Settings and SCI Communication Formats
Mode
Asynchronous
Asynchronous
(multiprocessor
format)
Clocked
synchronous
Note: Asterisks (*) in the table indicate don’t-care bits.
HITACHI 364
When an internal clock is selected, the SCI operates using the on-chip baud rate generator,
When an external clock is selected, the SCI operates on the input serial clock. The on-chip
and outputs a serial clock signal to external devices.
baud rate generator is not used.
Bit 7:
C/A
0
1
Bit 6:
CHR
0
1
0
1
*
SMR Settings
Bit 5:
PE
0
1
0
1
*
*
*
*
*
Bit 2:
MP
0
1
*
Bit 3:
STOP
0
1
0
1
0
1
0
1
0
1
0
1
*
Data
Length
8-bit
7-bit
8-bit
7-bit
8-bit
SCI Communication Format
Parity
Bit
Absent
Present
Absent
Present
Absent
Multipro-
cessor Bit
Absent
Present
Absent
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