基于国产芯片的E1接口重构技术研究与实现

E1 Interface Reconfiguration Technology and Its Implementation based on Domestic Chip

接入路由器中接入板的FPGA和CPU等关键元器件采用国产化芯片,控制数据和业务数据分布式协同处理,同时对板卡进行模块化设计,使得更改接口模块和加载不同程序实现设备的静态重构。采用两片FPGA既能弥补国产芯片性能的不足,也使得不同接入板数据处理模块易于隔离。介绍了接入板的整体设计思路、所要解决的问题和软硬件设计方案,并对CPU、FPGA和接口模块间的通道进行配置。经过测试,E1板卡能很好的完成数据的收发处理。

Domestic chips are usually used in key components for access board of access router, such as FPGA and CPU, control data and business data are in distributed collaborative process, and the modular design makes the change of card interface module and the loading of different programs realize equipment static reconfiguration. The adoption of two pieces of FPGA could make up the inadequacy of domestic chip performance, and makes easy the isolation of different access board data processing modules. The overall design of access board, the problems to be solved, the hardware and software strategies are described. The channels of between the CPU, FPGA and interface module are configured. Experiment indicates that this E1 board could fairly implement data receiving and dispatch process.