一种通用嵌入式Ethernet接口设计与实现  

Design and implementation of a general Ethernet interface for embedded system

作　　者：史绪蓬[1] 卢迪[1] 

机构地区：[1]哈尔滨理工大学,哈尔滨150040

出　　处：《国外电子测量技术》2008年第2期13-15,22,共4页Foreign Electronic Measurement Technology

摘　　要：近年来嵌入式系统和互联网的发展非常迅猛,并且相互结合的趋势越来越明显,针对这个问题,本文设计了一种具有通用性的嵌入式系统以太网接入方案。本文基于三星S3C44B0X,详细描述了RTL8019以太网控制器的性能特点,并详细介绍了S3C44B0X与RTL8019之间的硬件连接和软件设计。深入讨论了以太网控制器初始化、数据帧收发和DMA操作的编程过程,给出了一个完整的以太网数据发送/接收方案。经实践证明这种设计方法对于8/16/32位MCU(MPU)和DSP等嵌入式系统都具有参考价值。此方案已经成功应用于高速公路电子不停车收费系统(ETC)的网络部分。The trend of integration becomes increasingly obvious in these years. To meet the demand of that, a generic solution for embedded system accessing to the Ethernet is introduced in this paper. Based on S3C44B0X, the features and the functions of RTL8019 are given a particular description, and the details of hardware connection and software design are also presented. The programming process of NIC initializing, data frame receiving and sending and operation of DMA controller has been deeply discussed, providing a completed implementation scheme of sending/receiving an Ethernet frame. The practice has proved that this design method has a reference value for 8/16/32-bit MCU （MPU）, DSP and some other embedded systems. This design has been successfully used to the network segment of ETC system.

关 键 词：ARM S3C44B0 RTL8019 以太网 嵌入式 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构]