基于DSP的以太网通信接口的实现

Implementation of Ethernet Communication Interface Based on DSP

在城市交通诱导系统中,通过以太网络的传输是一种新型的传输方式.通过发送网络数据来对远端的交通诱导屏进行信息的发布、显示交通信息等,增加了交通控制的灵活性.文中介绍了DSP为微处理器,以CS8900A为网络控制器的以太网通信系统的设计方法,给出了驱动程序的编写方法,讨论了TCP/IP协议及其具体实现,完成了TCP/IP协议的编写,最终实现了对交通诱导屏的控制,是一种行之有效的解决方案.

This is a new-style method of transmitting by Ethernet communication in urban traffic informa- tion system. With sending net-data to Traffic Guidance Display which displays and releases information, it is greatly flexible. The paper introduces one design method of Ethernet communication system using DSP micro processor and CS8900A NIC. The work principle of network controller CS8900A and the hardware circuit of DSP are given, and also the method to＇compose driver software is provided. This paper discusses TCP/IP protocol and its implementation in detail. The TCP/IP protocol is programmed and finally the control of Traffic Guidance Display is implemented. This solution is very effective.