SH7750_08 Datasheet, PDF (861/1162 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 17 Smart Card Interface
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
MD0/SCK
I/O
Clock input/output
Receive data pin
RxD
Input
Receive data input
Transmit data pin
MD7/TxD
Output Transmit data output
Note: The serial clock pin and transmit data pin function as mode input pins MD0 and MD7 after a
power-on reset.
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
Serial mode register SCSMR1
R/W H'00
Bit rate register
SCBRR1
R/W H'FF
Serial control register SCSCR1
R/W H'00
Transmit data register SCTDR1
Serial status register SCSSR1
R/W H'FF
R/(W)^*1 H'84
Receive data register SCRDR1
R
H'00
Smart card mode
register
Serial port register
SCSCMR1
SCSPTR1
R/W
R/W
H'00
H'00^*2
Notes: 1. Only 0 can be written, to clear flags.
2. The value of bits 2 and 0 is undefined.
P4 Address
H'FFE00000
H'FFE00004
H'FFE00008
H'FFE0000C
H'FFE00010
H'FFE00014
H'FFE00018
H'FFE0001C
Area 7
Address
H'1FE00000
H'1FE00004
H'1FE00008
H'1FE0000C
H'1FE00010
H'1FE00014
H'1FE00018
H'1FE0001C
Access
Size
8
8
8
8
8
8
8
8
Rev.7.00 Oct. 10, 2008 Page 777 of 1074
REJ09B0366-0700