基于FPGA的E1/Ethernet互联方案的研究与实现

Study and Implementation of E1/Ethernet Interconnect Scheme based on FPGA

作为电信网与计算机Internet网基础——E1链路和以太网传输链路,它们之间的互连互通对实现两网的融合通信和优势互补具有很强的应用价值和现实意义。对此提出了一种基于FPGA的E1_以太网适配器的设计,主要包括HDLC帧与MAC数据帧格式的转换、系统同步机制的实现、数据缓存机制和流量控制的实现。适配器的主要功能是采用FPGA硬件编程实现的,具有系统处理速度快、设计灵活、控制方便等优点,在应用中取得了较好的效果。

The connection of E1 link and Ethernet link is the foundation for telecom and Ethernet.And it is also of great value in realizing intercommunication between these two networks.An E1/Ethernet adapter based on FPGA is designed,and the objectives include frame transmission between HDLC and MAC,system synchronization,data buffering and flow control.The adapter is principally realized via FPGA programming,and the fast,flexible and easy manipulation is thus achieved.Furthermore,the application is satisfactory and effective.