本文设计开发了一种星型拓扑的国产化以太网交换系统。设计系统采用EEPROM的启动配置模式,实现多片交换芯片SF2507的启动和级联,该系统能够支持16路自适应以太网的交换和数据通信。本文设计的系统采用内置5端口的PHY收发器交换芯片,开发成本低、设计简单、使用便利。利用该系统对接16路网络摄像头同时进行测试验证,系统能够正常传输16路网络视频数据,满足设计指标和要求,为国产片化网络交换机系统的设计开发提供了一种解决方案。

In the paper,a domestic Ethernet switching system with a star topology is designed.The system adopts the startup configuration mode of EEPROM to realize startup and cascade connection of multi-chip switching chip SF2507.The system can support 16-channel adaptive Ethernet exchange and data communication.This system adopts the switch chip with built-in 5-port PHY transceiver,which has low development cost,simple design and convenient use.The design indexes and requirements provide a solution for the design and development of the domestic chip network switching system.