HD6433044 Datasheet, PDF (509/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

14.1.3 Input/Output Pins
Table 14-1 lists the smart card interface pins.
Table 14-1 Smart Card Interface Pins
Name
Serial clock pin
Receive data pin
Transmit data pin
Abbreviation
SCK₀
RxD₀
TxD₀
I/O
Output
Input
Output
Function
Clock output
Receive data input
Transmit data output
14.1.4 Register Configuration
The smart card interface has the internal registers listed in table 14-2. BRR, TDR, and RDR have
their normal serial communication interface functions, as described in section 13, Serial
Communication Interface.
Table 14-2 Registers
Address^*1 Name
Abbreviation
H'FFB0
Serial mode register
SMR
H'FFB1
Bit rate register
BRR
H'FFB2
Serial control register
SCR
H'FFB3
Transmit data register
TDR
H'FFB4
Serial status register
SSR
H'FFB5
Receive data register
RDR
H'FFB6
Smart card mode register
SCMR
Notes: 1. Lower 16 bits of the address.
2. Only 0 can be written, to clear flags.
R/W Initial Value
R/W H'00
R/W H'FF
R/W H'00
R/W H'FF
R/(W)^*2 F'84
R
H'00
R/W H'F2
499