基于FPGA的AFDX端系统协议芯片的设计与实现

Design and Implementation of AFDX End-System Protocol Chip Based on FPGA

航空电子全双工交换以太网(AFDX)是下一代航空数据网络的最佳选择,AFDX端系统保证了AFDX网络航电系统之间数据交换的安全和可靠性;为了研制具有我国自主产权的新型机载数据网络端系统协议芯片,基于ARINC664规范第7部分,提出符合该规范的基于FPGA的AFDX端系统协议芯片和相应AFDX端系统板卡的设计方案,并给出关键模块的具体实现;通过对端系统协议芯片进行测试验证,证明该端系统协议芯片符合AFDX协议标准,具有较高的通信性能及稳定性,可为新一代航空电子设备中的数据通信提供保障。

Avionics Full Duplex Switched Ethernet （AFDX） is the best choice of next--generation avionics data networks. In the AFDX network, the data exchange＇s security and reliability of avionics systems are ensured by AFDX end system. In order to develop a new type of end--system protocol chip used in aircraft--borne network whose property owned by China, based on the analysis of ARINC664 specification part 7, this paper provides a solution of AFDX End--System （ES） protocol chip based on FPGA and corresponding AFDX End--System Card, it also gives the realization of key modules of protocol chip. By testing and verification of the ES chip, it is proved that the chip tallies the standard of AFDX protocol, has high communication performance and stability, and can provide guarantee for the data communication in the next generation of avionics devices.