一种基于DSP的可插拔式以太网接口的设计与实现

Design and Realization of a Ethernet Interface Enable Plug-Pull Based on DSP

网络接口是数字通信系统中的关键部分 ,在当前很多微系统通信设备中 ,其网络接口固定在整个系统设备中 ,不便于系统的移植与维护。为此 ,在工程实践中借鉴PC网卡的概念 ,以TMS32 0VC5 410和RTL80 19AS芯片为核心部件 ,以PC10 4工业总线为接口 ,设计了一种可插拔式网卡连接方式 ,实现了基于总线形式的以太网结构。这种活动式网络接口大大增加了系统的可维护性 ,方便了系统的功能移植与扩展。文中论述了这种可插拔式DSP芯片与以太网接口的设计实现过程。

Ethernet interface is a key part of the digital communication system. In many micro-system communication equipments, the Ethernet interface is fixed in the whole system, so it is discommodious to replant and maintain the system. In the project, by using NIC of PC as reference, using TMS320VC5410 and RTL8019AS chips as the key parts, and PC104 industrial bus as the interface, a plug-pull Ethernet interface is designed which realized a Ethernet basing on bus framework. The unsteady Ethernet interface improves the capability of maintenance and is convenient to replant and expand the system's function. This paper discusses the designing and realization process of this interface that enable plug-pull between DSP chip and Ethernet.