基于CPLD的异步串行通讯控制器的研究与设计  

Research and Design of Asynchronous Serial Communication Controller Based on CPLD

作　　者：李洪威[1] 张遂南[1] 

机构地区：[1]西安微电子技术研究所,陕西西安710075

出　　处：《现代电子技术》2008年第21期166-168,173,共4页Modern Electronics Technique

摘　　要：为了解决没有异步串口的处理器与外围串行设备通信困难的缺点,通过研究异步串行通信协议的原理,设计了一个基本的异步串行通信的功能框架,并利用复杂可编程逻辑器件CPLD,结合硬件描述语言VHDL,实现了异步串行通讯控制器的设计。通过在ISE平台下,对控制器程序的时序仿真,并进行实际测量,结果表明该设计方案实现了微处理器与外围串行设备之间的异步串行通信的功能。To solve defects of the difficulty of communication between processor without asynchronous serial interface and peripheral equipment, research on the theory of protocol of asynchronous serial communication, the functional frame of asynchronous serial communication is designed,CPLD and VHDL are used together to implement this design. Time sequence simulation＇and practical test of the controllerrs program on ISE. The results indicate that this design has implemented the function of asynchronous serial communication between micro - processor and peripheral equipment.

关 键 词：异步串行通信 CPLD 通信控制器 时序仿真 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]