Rev. 3.0, 04/02, page 681 of 1064
17.1.3
Pin Configuration
Table 17.1 shows the smart card interface pin configuration.
Table 17.1
Smart Card Interface Pins
Pin Name
Abbreviation
I/O
Function
Serial clock pin
SCK
I/O
Clock input/output
Receive data pin
RxD
Input
Receive data input
Transmit data pin
TxD
Output
Transmit data output
17.1.4
Register Configuration
The smart card interface has the internal registers shown in table 17.2. Details of the SCBRR1,
SCTDR1, SCRDR1, and SCSPTR1 registers are the same as for the normal SCI function: see the
register descriptions in section 15, Serial Communication Interface (SCI).
With the exception of the serial port register, the smart card interface registers are initialized in
standby mode and in the module standby state as well as by a power-on reset or manual reset.
When recovering from standby mode or the module standby state, the registers must be set again.
Table 17.2
Smart Card Interface Registers
Name
Abbreviation
R/W
Initial
Value
P4 Address
Area 7
Address
Access
Size
Serial mode register
SCSMR1
R/W
H'00
H'FFE00000
H'1FE00000
8
Bit rate register
SCBRR1
R/W
H'FF
H'FFE00004
H'1FE00004
8
Serial control register
SCSCR1
R/W
H'00
H'FFE00008
H'1FE00008
8
Transmit data register
SCTDR1
R/W
H'FF
H'FFE0000C
H'1FE0000C
8
Serial status register
SCSSR1
R/(W)*
1
H'84
H'FFE00010
H'1FE00010
8
Receive data register
SCRDR1
R
H'00
H'FFE00014
H'1FE00014
8
Smart card mode
register
SCSCMR1
R/W
H'00
H'FFE00018
H'1FE00018
8
Serial port register
SCSPTR1
R/W
H'00*
2
H'FFE0001C
H'1FE0001C
8
Notes: *1 Only 0 can be written, to clear flags.
*2 The value of bits 2 and 0 is undefined.
Summary of Contents for SH7751
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