SH7280 Datasheet, PDF (855/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 17 Serial Communication Interface with FIFO (SCIF)
17.3.5 Serial Mode Register (SCSMR)
SCSMR specifies the SCIF serial communication format and selects the clock source for the baud
rate generator.
The CPU can always read and write to SCSMR. SCSMR is initialized to H'0000 by a power-on
reset.
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
C/A CHR PE O/E STOP -
CKS[1:0]
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R R/W R/W R/W R/W R/W R R/W R/W
Bit
Bit Name
15 to 8 
7
C/A
6
CHR
Initial
Value
All 0
0
0
R/W Description
R Reserved
These bits are always read as 0. The write value should
always be 0.
R/W Communication Mode
Selects whether the SCIF operates in asynchronous or
clocked synchronous mode.
0: Asynchronous mode
1: Clocked synchronous mode
R/W Character Length
Selects 7-bit or 8-bit data length in asynchronous mode.
In clocked synchronous mode, the data length is always
8 bits, regardless of the CHR setting.
0: 8-bit data
1: 7-bit data*
Note: * When 7-bit data is selected, the MSB (bit 7) of
the transmit FIFO data register is not
transmitted.
Rev. 1.00 Jun. 26, 2008 Page 825 of 1692
REJ09B0393-0100