航空电子全双工交换式以太网(AFDX)是在商用以太网的基础上经过改进实时性和可靠性建立起来的；根据ARINC664规范和AFDX的特点,提出了一种基于FPGA和PCI总线的终端接口卡设计方案；采用模块化思想对系统各模块的功能进行了分析,设计了硬件电路,编写了驱动程序;制定了详细的方案对接口卡进行调试和整体的仿真测试,并分析了结果,测试结果表明,该设计可实现正常的数据通信,各项性能指标符合ARINC664第7部分规范,具有较好的可靠性和实时性,达到了预期目标.%Avionics Full Duplex Switched Ethernet (AFDX) was based on the commercial Ethernet, which was established by improving real—time and reliability. According to the characteristics of ARINC664 specification and AFDX, a scheme of the AFDX End System Card based on FPGA and PCI was put forward. The functions of modules were analyzed, the hardware circuit was designed, and the PCI driver was designed. A scheme for system debug and whole simulation test was made; the test results were analysised. With analysis of the test results, this end system card can carry out the data communication and has better reliability and real—time. The performance parameters meet the Part 7 of AFDX specification, achieve the desired results.
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