HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 774
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 19 Serial Communication Interface with FIFO (SCIF)
Transmit/Receive Formats: Table 19.10 lists the 8 communication formats that can be selected
in asynchronous mode. The format is selected by settings in the serial mode register (SCSMR).
Table 19.10 Serial Communication Formats (Asynchronous Mode)
[Legend]
START: Start bit
STOP: Stop bit
P:
Clock: An internal clock generated by the on-chip baud rate generator or an external clock input
from the SCK pin can be selected as the SCIF transmit/receive clock. The clock source is selected
by the C/A bit in the serial mode register (SCSMR) and bits CKE1 and CKE0 in the serial control
register (SCSCR) (table 19.9).
When an external clock is input at the SCK pin, it must have a frequency equal to 16 times the
desired bit rate.
When the SCIF operates on an internal clock, it can output a clock signal at the SCK pin. The
frequency of this output clock is equal to 16 times the desired bit rate.
Rev. 4.00 Sep. 14, 2005 Page 724 of 982
REJ09B0023-0400
CHR PE STOP
0
0
0
0
1
1
1
1
SCSMR Bits
Parity bit
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
1
START
START
START
START
START
START
START
START
1
2
Serial Transmit/Receive Format and Frame Length
3
4
7-bit data
7-bit data
7-bit data
7-bit data
8-bit data
8-bit data
8-bit data
8-bit data
5
6
7
8
STOP
STOP STOP
P
P
9
STOP
STOP STOP
STOP
STOP STOP
10
P
P
STOP
STOP STOP
11
12
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