H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 263

• Manufacturer Part Number: H8S2110B
• Description: Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

12.3.5
SMR is used to set the SCI’s serial transfer format and select the on-chip baud rate generator clock
source.
Bit
7
6
5
4
3
Bit Name
C/A
CHR
PE
O/E
STOP
Serial Mode Register (SMR)
Initial Value
0
0
0
0
0
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 the MSB of TDR is not transmitted in
transmission.
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 frame.
Section 12 Serial Communication Interface (SCI)
Rev. 2.00 Mar 21, 2006 page 225 of 518
REJ09B0299-0200