一种PowerPC和FPGA结构的远程接口单元设计方法

摘要

Remote Interface Unit ( RIU) has been an important part of IMA systems .This paper analyzes the new requirements to the remote I/O of avionic system in distributed IMA architecture ,and proposes a design scheme based on PowerPC and FPGA of RIU .This approach not only achieves RIUs with integrat-ed kinds of I/O resources, but also assures RIUs with some fault-tolerance and reconfiguration , and makes substantive breakthroughs in key techniques of remote I /O.%远程接口单元（ RIU）已经是综合化模块化航空电子系统的重要组成部分。分析了分布式IMA架构下航空电子系统对远程接口的新需求，提出了一种基于PowerPC ＋FPGA结构的远程接口单元设计方法。通过设计方法不仅实现了单元综合多种I／O资源，还保证了单元具有一定的容错和可配置特性，并在远程接口关键技术方面取得了实质性的突破。