HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 321
HD6437101
Manufacturer Part Number
HD6437101
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6437101.pdf
(560 pages)
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10.3.5
SMR is used to set the SCI’s serial transfer format and select the baud rate generator clock source.
Bit
7
6
5
4
3
2
Bit Name
C/A
CHR
PE
O/E
STOP
MP
Serial Mode Register (SMR)
Initial
Value
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Communication Mode
0: Asynchronous mode
1: Clocked synchronous mode
Character Length (enabled only in asynchronous mode)
0: Selects 8 bits as the data length.
1: Selects 7 bits as the data length. LSB-first is fixed and
In clocked synchronous mode, a fixed data length of 8
bits is used.
Parity Enable (enabled only in asynchronous mode)
When this bit is set to 1, the parity bit is added to transmit
data before transmission, and the parity bit is checked in
reception. For a multiprocessor format, parity bit addition
and checking are not performed regardless of the PE bit
setting.
Parity Mode (enabled only when the PE bit is 1 in
asynchronous mode)
0: Selects even parity.
1: Selects odd parity.
Stop Bit Length (enabled only in asynchronous mode)
Selects the stop bit length in transmission.
0: 1 stop bit
1: 2 stop bits
In reception, only the first stop bit is checked. If the
second stop bit is 0, it is treated as the start bit of the
next transmit character.
Multiprocessor Mode (enabled only in asynchronous
mode)
When this bit is set to 1, the multiprocessor
communication function is enabled. The PE bit and O/E
bit settings are invalid in multiprocessor mode.
the MSB (bit 7) of TDR is not transmitted in
transmission.
Section 10 Serial Communication Interface (SCI)
Rev.1.00 Sep. 18, 2008 Page 287 of 522
REJ09B0069-0100
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