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14.2
Input/Output Pins
Table 14.1 shows the input/output pins for each SCI channel.
Table 14.1 Pin Configuration
Channel
Pin Name*
1
SCK1
RxD1
TxD1
Note:
*
Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the
channel designation.
14.3
Register Descriptions
The SCI has the following registers for each channel. Some bits in the serial mode register (SMR),
serial status register (SSR), and serial control register (SCR) have different functions in different
modesnormal serial communication interface mode and smart card interface mode; therefore,
the bits are described separately for each mode in the corresponding register sections.
Channel Register Name
Channel 1
Serial mode register_1
Bit rate register_1
Serial control register_1
Transmit data register_1
Serial status register_1
Receive data register_1
Smart card mode register_1
Input/Output
Function
Input/Output
Channel 1 clock input/output
Input
Channel 1 receive data input
Output
Channel 1 transmit data output
Abbreviation R/W
SMR_1
BRR_1
SCR_1
TDR_1
SSR_1
RDR_1
SCMR_1
Section 14 Serial Communication Interface (SCI)
Initial
Value
R/W
H'00
R/W
H'FF
R/W
H'00
R/W
H'FF
R/W
H'84
R
H'00
R/W
H'F2
Rev. 1.00 May 09, 2008 Page 363 of 954
Data Bus
Address
Width
H'FF88
8
H'FF89
8
H'FF8A
8
H'FF8B
8
H'FF8C 8
H'FF8D 8
H'FF8E
8
REJ09B0462-0100
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