Section 15 Smart Card Interface; Overview; Features - Hitachi SH7709S Hardware Manual

Section 15 Smart Card Interface

15.1

Overview

As an added serial communications interface function, the SCI supports an IC card (smart card)
interface that conforms to the data transfer protocol (asynchronous half-duplex character
transmission protocol) of the ISO/IEC7816-3 (Identification Card) standard. Register settings are
used to switch between the normal serial communication interface and the smart card interface.
15.1.1

Features

The smart card interface has the following features:
• Asynchronous mode
 Data length: 8 bits
 Parity bit generation and check
 Receive mode error signal detection (parity error)
 Transmit mode error signal detection and automatic re-transmission of data
 Supports both direct convention and inverse convention
• Bit rate can be selected using on-chip baud rate generator.
• Three types of interrupts: Transmit-data-empty, receive-data-full, and communication-error
interrupts are requested independently.
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