Renesas Stereo System SH7709S User Manual
Rev. 5.00, 09/03, page 538 of 760
Table 16.8
SCSCR Settings and SCIF Clock Source Selection
SCSCR Settings
SCIF Transmit/Receive Clock
Mode
Bit 1
CKE1
CKE1
Bit 0
CKE0
CKE0
Clock Source
SCK Pin Function
0
0
Internal
SCIF does not use the SCK pin
1
Outputs a clock with a frequency 16 times
the bit rate
the bit rate
1
0
External
Asynchronous
mode
mode
1
Inputs a clock with frequency 16 times the
bit rate
bit rate
16.3.2
Serial Operation
Transmit/Receive Formats: Table 16.9 lists the eight communication formats that can be
selected. The format is selected by settings in the serial mode register (SCSMR).
selected. The format is selected by settings in the serial mode register (SCSMR).
Table 16.9
Serial Communication Formats
SCSMR Bits
Serial Transmit/Receive Format and Frame Length
CHR
PE
STOP
1
2
3
4
5
6
7
8
9
10
11
12
0
0
0
START
8-bit data
STOP
0
0
1
START
8-bit data
STOP STOP
0
1
0
START
8-bit data
P
STOP
0
1
1
START
8-bit data
P
STOP STOP
1
0
0
START
7-bit data
STOP
1
0
1
START
7-bit data
STOP STOP
1
1
0
START
7-bit data
P
STOP
1
1
1
START
7-bit data
P
STOP STOP
START: Start bit
STOP: Stop bit
P:
Parity bit