DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 423

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

12.3.5
SMR is used to set the SCI's serial transfer format and select the baud rate generator clock source.
Some bits in SMR have different functions in normal mode and smart card interface mode.
• Normal Serial Communication Interface Mode (When SMIF in SCMR is 0)
Bit
7
6
5
4
3
Bit Name Initial Value
C/A
CHR
PE
O/E
STOP
Serial Mode Register (SMR)
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
0: Asynchronous mode
1: Clocked synchronous mode
0: 1 stop bit
1: 2 stop bits
Description
Communication 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
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)
Stop Bit Length (enabled only in asynchronous mode)
Selects the stop bit length in transmission.
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.
0: Selects even parity
1: Selects odd parity
and the MSB of TDR is not transmitted in
transmission
Rev.7.00 Dec. 24, 2008 Page 369 of 698
REJ09B0074-0700