AFDX网络端系统芯片架构的研究与设计

AFDX Network End-System Chip Architecture Research and Design

实时性、确定性和高可靠是航空电子全双工交换以太网(AFDX)网络的技术特点。在对ARINC664Part7协议研究的基础上,提出一种采用专用数据通道的系统架构,并在不同通信模式下对该结构进行分析。与国外参考设计相比,该系统架构缩短了协议处理的时间和数据拷贝,大大降低主机的系统开销,便于芯片物理实现。最后基于该系统架构进行芯片设计,芯片实测结果表明,该系统架构完全满足AFDX网络实时性、确定性的系统要求,方案行之有效。

Real-time,determinacy and reliability is the technology feature of Avionics Full Duplex Switched Ethernet（AFDX）.It does research and analysis on the ARINC664 Part7,proposes an architecture of using a specific data channel,and discusses the communication process in different mode.Compared with foreign reference design,this architecture to shorten the processing time and the data copying times,greatly reducing host spending,easy to chip physical implementation.Finally,the test of chip design based on this architecture,shows that the architecture to fully meet real-time,deterministic system requirements.