3069RF-ZTAT Datasheet, PDF (483/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

For serial communication interface (SMIF bit in SCMR cleared to 0): Selects whether the SCI
operates in asynchronous or synchronous mode.
Bit 7
C/A
0
1
Description
Asynchronous mode
Synchronous mode
(Initial value)
For smart card interface (SMIF bit in SCMR set to 1): Selects GSM mode for the smart card
interface.
Bit 7
GM
Description
0
The TEND flag is set 12.5 etu after the start bit
1
The TEND flag is set 11.0 etu after the start bit
Note: etu: Elementary time unit (time required to transmit one bit)
(Initial value)
Bit 6—Character Length (CHR): Selects 7-bit or 8-bits data length in asynchronous mode. In
synchronous mode, the data length is 8 bits regardless of the CHR setting.
Bit 6
CHR
Description
0
8-bit data
1
7-bit data*
Note: * When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted.
(Initial value)
Bit 5—Parity Enable (PE): In asynchronous mode, this bit enables or disables the addition of a
parity bit to transmit data, and the checking of the parity bit in receive data. In synchronous
mode, the parity bit is neither added nor checked, regardless of the PE bit setting.
Bit 5
PE
Description
0
Parity bit not added or checked
(Initial value)
1
Parity bit added and checked*
Note: * When PE bit is set to 1, an even or odd parity bit is added to transmit data according to
the even or odd parity mode selection by the O/E bit, and the parity bit in receive data
is checked to see that it matches the even or odd mode selected by the O/E bit.
Rev. 5.0, 09/04, page 461 of 978