Input/Output Pins; Register Configuration - Hitachi H8/3048 Hardware Manual

14.1.3 Input/Output Pins

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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

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
*1
Address Name
H'FFB0 Serial mode register
H'FFB1 Bit rate register
H'FFB2 Serial control register
H'FFB3 Transmit data register
H'FFB4 Serial status register
H'FFB5 Receive data register
H'FFB6 Smart card mode register
Notes: 1. Lower 16 bits of the address.
2. Only 0 can be written, to clear flags.
Abbreviation I/O
SCK Output
0
RxD Input
0
TxD Output
0
Abbreviation
SMR
BRR
SCR
TDR
SSR
RDR
SCMR
499
Function
Clock output
Receive data input
Transmit data output
R/W Initial Value
R/W H'00
R/W H'FF
R/W H'00
R/W H'FF
*2
R/(W) F'84
R H'00
R/W H'F2