Design and Implementation of IC Card I/O Interface

Based on the Sumsung ARM S3C44B0X embedded development platform, a design scheme of data communication between IC card and general purpose I/O ports is presented, including the instruction of hardware interface design and software design in detail, especially many problems should be noticed in hardware implementation are put forward. And the scheduling of data communication between general purpose I/O ports and IC card is implemented by using the common advanced language C. By defining different data transmission formats with proper software adjustment, the specific of IC card can be easily implemented.