一种基于FPGA的数字交换芯片设计

Design of digital switching chip based on FPGA

通过研究数字交换芯片的组成结构,将数字交换芯片进行了模块化的分割,根据技术指标,利用FPGA技术分别设计了时钟生成模块、数据发送模块、数据接收模块以及微处理器接口模块,最终根据数字交换芯片的“交换模式”与“消息模式”的工作原理对所设计的各个模块进行了组合,完成了数字交换芯片的设计。测试结果表明:基于FPGA技术设计的数字交换芯片实现了“交换模式”与“消息模式”的功能;并且达到了技术指标的要求,实现了32条母线输入和32条母线输出,每条母线输入数据速率与输出数据速率为8.192 Mb/s,通道容量为4096×4096的无阻塞交换。利用FPGA技术设计了一种数字交换芯片,采用FPGA芯片实现了数字交换芯片的功能。对于数字交换芯片,实现了自主可控,所设计的数字交换芯片满足国内调度通信对数字交换芯片的需求,而且用软件设计替代了硬件设计,可以适应技术指标的改变。

The modularized segmentation of the digital switching chip is conducted according to the composition structure of the chip.According to the technical indicators,the clock generation module,data sending module,data receiving module and microprocessor interface module are designed by means of the FPGA technology.The designed modules are combined according to the working principles of the"exchange mode"and"message mode"of the digital exchange chip,so that the design of the digital exchange chip is completed.The testing results show that the digital switching chip designed based on FPGA technology can realize the functions of"exchange mode"and"message mode",reach the requirements of technical indicators,realize 32 buses input and output with input and output data flow of 8.192 Mb/s,and implement the non-blocking exchange with channel capacity of 4096×4096.The digital switching chip is designed by means of the FPGA technology and the function of the digital switching chip is realized by means of the FPGA chip.The designed digital switching chip can realize the independent control,meet the demand of dispatching communication for digital switching chip in China,and can adapt to changes in the technical indicators,with which hardware design is replaced by software design.