基于FPGA IP核的AFDX与ARINC429总线转换接口设计

Design of AFDX and Arinc429 Bus Conversion Interface Based on FPGA IP Core

摘要:

航空电子全双工交换式以太网(AFDX)是下一代航电系统的主干连接网,ARINC429是一种在航空电子系统领域中较成熟的总线标准,在某些分系统内仍然被采用;如何实现这两种总线的转换是目前航电系统的关键技术之一;利用设计的AFDX 协议和ARINC429 协议的IP核,完成了两种总线协议的相互转换;从AFDX数据帧中解析出429数据字,或者将429数据字添加到AFDF协议各层首部组成AFDX帧;通过Modelsim SE的RTL级的仿真和FPGA的实物测试,结果表明AFDX协议帧和ARINC429数据字可以相互转换,验证了IP核及总线转换接口设计的正确性。

Abstract:

Avionics full duplex switched Ethernet (AFDX) is the next generation avionics system backbone network connection,ARINC429 is a more mature bus standard in the avionics system field, in some system is still used.How to achieve the transformation of two bus is one of the key technology of avionics system.Using design of AFDX protocol and ARINC429 protocol IP core, completed two bus protocol conversion to each other.Parsing out 429 data word from AFDX data frames, or add 429 data word to the AFDF protocol of each layer header AFDX frames.By Modelsim SE the RTL simulation and FPGA physical test, the results show that AFDX protocol frame and ARINC429 data word can convert each other, to verify the correctness of the IP core and bus conversion interface design.