Allwinner A20 - Smart Card Reader; Overview

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6.14. Smart Card Reader

6.14.1. Overview

The Smart Card Reader (SCR) is a communication controller that transmits data between the system

and smart card. The controller can perform a complete smart card session, including card activation,

card deactivation, cold/warm reset, Answer to Reset (ATR) response reception, and data transfer,

etc.

It features:

 Support APB slave interface for easy integration with AMBA-based host systems

 Support the ISO/IEC 7816-3:1997(E) and EMV2000 (4.0) Specifications

 Perform functions needed for complete smart card sessions

 Support adjustable clock rate and bit rate

 Configurable automatic byte repetition

 Support commonly used communication protocols:

T=0: for asynchronous half-duplex character transmission

T=1: for asynchronous half-duplex block transmission

 Support FIFOs for receive and transmit buffers (up to 128 characters) with threshold

 Support configurable timing functions:Smart card activation time, Smart card reset time, Guard

time, Timeout timers

 Support synchronous and other non-ISO 7816 and non-EMV cards