HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 421

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Transmit/Receive Formats: Table 14.10 lists the 11 communication formats that can be selected
in the asynchronous mode. The format is selected by settings in the SCSMR.
Table 14.10 Serial Communication Formats (Asynchronous Mode)
Legend
— :
START: Start bit
STOP: Stop bit
P:
MPB:
Clock: An internal clock generated by the on-chip baud rate generator or an external clock input
from the SCK0 pin can be selected as the SCI transmit/receive clock. The clock source is selected
by the C/A bit in SCSMR and bits CKE1 and CKE0 in the SCSCR (table 14.9).
When an external clock is input on the SCK0 pin, it must have a frequency equal to 16 times the
desired bit rate.
When the SCI operates on an internal clock, it can output a clock signal on the SCK0 pin. The
frequency of this output clock is equal to the bit rate. The phase is aligned as in figure 14.6 so that
the rising edge of the clock occurs at the center of each transmit data bit.
CHR PE
0
0
0
0
1
1
1
1
0
0
1
1
SCSMR Bits
0
0
1
1
0
0
1
1
—
—
—
—
Don't care
Parity bit
Multiprocessor bit
MP
0
0
0
0
0
0
0
0
1
1
1
1
STOP 1
0
1
0
1
0
1
0
1
0
1
0
1
START
START
START
START
START
START
START
START
START
START
START
START
2
Serial Transmit/Receive Format and Frame Length
3
4
7-Bit data
7-Bit data
7-Bit data
7-Bit data
7-Bit data
7-Bit data
5
8-Bit data
8-Bit data
8-Bit data
8-Bit data
8-Bit data
8-Bit data
6
7
8
Rev. 4.00, 03/04, page 375 of 660
9
STOP
STOP STOP
MPB
MPB
P
P
10
STOP
STOP STOP
STOP
STOP STOP
STOP
STOP STOP
MPB
MPB
P
P
11
STOP
STOP STOP
STOP
STOP STOP
12