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Bit 7—Communication Mode (C/A A A A )/GSM Mode (GM): The function of this bit differs for the
normal serial communication interface and for the smart card interface. Its function is switched
with the SMIF bit in SCMR.
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 A A A
Description
0
Asynchronous mode
1
Synchronous mode
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)
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.
Section 13 Serial Communication Interface
Rev. 4.00 Jan 26, 2006 page 485 of 938
(Initial value)
(Initial value)
(Initial value)
REJ09B0276-0400
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