基于FPGA的PC/104-CAN通讯板设计  

Design of PC/104-CAN Communication Board Based on FPGA

作　　者：徐军涛[1] 许化龙[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《现代电子技术》2009年第19期83-85,共3页Modern Electronics Technique

摘　　要：介绍基于FPGA的PC/104-CAN通讯板的设计与实现方案,采用SJA1000T作为CAN控制器,82C250作为CAN收发器,并在通信通道上采用光电隔离技术,提高了系统可靠性。重点论述了应用FPGA实现从PC/104总线到CAN总线的数据和地址信号传输,时序逻辑控制信号的转换,以及驱动程序的设计和CAN多帧数据传递时打包和解包的方法,应用一种简单实用的CAN数据包格式,有效地简化了数据通讯并提高了总线的有效传输速率。The design and implementation Of PC/104 -CAN communication board based on FPGA are introduced, tt adopts SJA1000T as the CAN controller,and 82C250 as the CAN transceiver. At the same time,photoelectric isolation technology is adopted on the channels to increase dependability of the system. The transformation of data and address signal and sequential control signal from PC/104 to CAN bus is discussed,and the design of drive and a method of CAN bus data packing and unpacking is mentioned. Using a kind of CAN data format, the data communication is simplified efficiently, and the effective transformation speed is increased.

关 键 词：PC/104 CAN FPGA 打包 解包 

分 类 号：TP366[自动化与计算机技术—计算机系统结构]