论文部分内容阅读
旨在B777飞机排除故障时利用计算机的分析处理能力,设计转接口板,可使B777飞机采用的ARINC 629总线上的数据与计算机之间双向传输。设计采用现场可编程逻辑门阵列FPGA,根据ARINC 629总线数据传输规范,用VHDL语言设计编码器、解码器、串并行转换器等逻辑单元程序,编码器和解码器可实现并行数据与曼彻斯特编码双相数据的转换。在MAX+PLUSⅡ中对程序编译、仿真通过后,下载到EP1K100QC208-3芯片中,配合外围控制存储电路,实现了从ARINC 629总线到计算机之间的双向数据传输。
Designed to troubleshoot the B777 aircraft using computer analysis and processing capabilities, the design to interface board allows the B777 aircraft to use ARINC 629 bus data and computer between the two-way transmission. Based on ARINC 629 bus data transfer specification, the logic unit program of encoder, decoder, serial-parallel converter and so on is designed by VHDL language. The encoder and decoder can realize the parallel data with Manchester encoding double Phase data conversion. Program compiled in MAX + PLUS Ⅱ, after simulation, downloaded to the EP1K100QC208-3 chip, with the external control of the storage circuit, to achieve from the ARINC 629 bus to the computer between the two-way data transmission.