基于FPGA的曼彻斯特编解码器设计

摘要

自上世纪80年代以来，MIL—STD-1553B总线标准已广泛应用于海陆空三军，但是其核心编解码芯片多为国外生产，为实现自主研发，设计出基于FPGA的曼彻斯特编解码器是影响整个总线系统通信质量的关键。本设计采用硬件描述语言（Verilog）设计电路，ISE完成综合和布局布线的工作，并用modelSim进行仿真验证。在深入分析曼彻斯特码型特点的基础上，对编解码器的工作过程和逻辑结构进行详细介绍。%MIL-STD-1553B Bus standard has been widely used in Air force, navy and land force of many country since 1980s. The core encode and decode chip are gotten by import, in order to realize research and produce independently, whether designing the Manchester codec or not is the key to decide the communication quality of the whole 1553B bus. The codec is design by Verilog HDL, synthesized by ISE and simulated by ModelSim. On the basis of analyzing the characteristic of the Man2chester code , the principle and the circuit structure of the codec are introduced in detail.