基于FPGA的1553B数据总线协议器的设计

摘要：电子技术与航空产业飞速发展，已成为我国支柱产业之一。我国政府高度重视航空航天产业发展，“十二五”期间将进一步加大政府支持力度，促进航空航天产业快速发展。在飞机制造中，航空电子系统是其中重要的组成部分，而航空电子系统中数据总线是关键技术之一。

11553B作为一种通用的军事标准协议，它对数据总线的电气和协议特性进行严格的规范和约束，现已广泛运用于航空电子综合系统。该标准对航空飞机所需的数字／命令／响应，分时复用等数字总线技术提出了一系列的要求，其中包括数据总线的传输和协议格式。

本文首先对FPGA和1553B数据总线协议相关原理进行概述，尤其是航空数据总线MIL-STD-1553B。其次是对其系统组成的介绍，本次设计主要包括两大部分，并串转换器、1553B数据总线协议器。最后着重讲述该系统在ISE 软件下的运行和仿真。1553B总线协议中对传输的字类型进行了规范和分类：分别是命令字、状态字和数据字。本次论文的设计主要着重于该协议总线接口内部的曼彻斯特码编码器，作为总线接口的重要组成部分，1553B数据总线协议器担负着码型编写、奇偶校验等重要任务，使数据能够以1553B所定义的标准形式在数据总线中进行传输。

              

关键词：FPGA，1553B数据总线协议，1553B总线，串并转换

      

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                     

Abstract: Electronics and Aviation technology industry developed rapidly. Our country attaches great importance to the development of aerospace industry.In the period of Twelfth of Five-Year government will support further increase Aviation, it will Promote the rapid development of the aerospace industry.In aircraft manufacturing,Avionics System is an important part of the Aviation.The avionics system is the key technology of data bus.

  1553B takes one kind of military standard，it has carried on the strict standard and the restraint to the electricity and the protocol characteristic of data bus，and it has already widely used in the aviation electron system．This standard propose a series of requests to the digital bus technology which are obligatory to the aviation airplane numeraI/Order/response，time sharing multiple use，including  data bus information flow and function format．

This article first introduces about the FPGA and Manchester Encoder，especially MIL-STD-1553B.Next is the introduction of its two composition unit,It including String and convert and Manchester Encoder.Fhen the one that told emphatically is ISEof Operation and Simulation，in the1553B's protocol，the word types which transmitted in the 1553B bus has carried on the standard classification，they are the order word、the status word and the data word．the design for this paper mainly emphatically in the protocol bus interface interior Manchester code encodeg as the bus interface important constituent，the encoder is shouldering the parallel\serial Ixansformation，the code compilation，the parity check and so on the important task，enables the data according to the standard form which defines by 1553B to carry on the transmission in the data bus.

 

Keywords: FPGA, Manchester Encoder, 1553B, String and convert