HD6417751 Datasheet, PDF(719/1105 Page) Renesas Technology Corp – SuperH RISC engine

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HD6417751 Datasheet, PDF (719/1105 Pages) Renesas Technology Corp – SuperH RISC engine

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Section 17 Smart Card Interface

17.1 Overview

An IC card (smart card) interface subset conforming to ISO/IEC 7816-3 (Identification Card) is

supported as a serial communication interface (SCI) extension function.

Switching between the normal serial communication interface and the smart card interface is

carried out by means of a register setting.

17.1.1 Features

Features of the smart card interface are listed below.

â¢ Asynchronous mode

ï£§ Data length: 8 bits

ï£§ Parity bit generation and checking

ï£§ Transmission of error signal (parity error) in receive mode

ï£§ Error signal detection and automatic data retransmission in transmit mode

ï£§ Direct convention and inverse convention both supported

â¢ On-chip baud rate generator allows any bit rate to be selected

â¢ Three interrupt sources

There are three interrupt sourcesâtransmit-data-empty, receive-data-full, and transmit/receive

errorâthat can issue requests independently.

The transmit-data-empty interrupt and receive-data-full interrupt can activate the DMA

controller (DMAC) to execute data transfer.

Rev. 3.0, 04/02, page 679 of 1064

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