EDA实验平台的设计与应用

Design and Appliance of EDA Experiment Platform

介绍了以CPLD为核心的通用EDA实验平台的设计思想和设计要点,该实验平台功能齐全、操作灵活,不仅提供丰富的基本输入输出设备,更突出的特点是结合了单片机,使该实验平台有更大的应用范围。重点介绍了以该实验平台为基础的单片机键盘接口电路的应用实例,在本例中对用于单片机的键盘子系统的专用键盘接口芯片进行功能分析,并提出了一种使用LPM宏库函数实现键盘接口芯片内部FIFO RAM(先进先出存储器)的方法。

The main design idea and the technique of EDA experiment platform based on CPLD/FP-GA are introduced. This experiment platform provides rich periphery devices and also combines with the chip microcomputer. It can be used in all kinds of scopes of electronic design. An applied example of interface circuit in the chip microcomputer keyboard is also presented. Some functional analysis of the keyboard interface chip used in the keyboard sub-system of the chip microcomputer are described in detail, and submits a design scheme to achieve inner FIFO RAM of the keyboard interface chip by using LPM function.