一种基于CPLD的单片机与PCI接口设计解决方案

A kind of according to CPLD of a machine and PCI connect a people's design solution

本文描述了用赛灵思公司的XC95216系列CPLD芯片实现扩展单片机与计算机PC104的接口并行通信的方法,解决了在嵌入式操作系统中单片机与主机总线设备打交道资源不足的固有缺陷,把以太网卡的功能集成在一片XC95216的CPLD中,简化了硬件,通信实时性强;并给出用VHDL编写的主要源程序。该方案在实践中检验通过。

The article introduce a method of parallel communication between expand MCU and interface of PC104 by CPLD chips （XC95216） of xilinx company. The method saluted some problems of flush bonding OS ＆ bus devices in main board so that integrating the functions of Ethernet card in CPLD （XC95216）. The article gave the main source program of VHDL. The method was passed by test of practice.