某CAN总线隔离器的设计与实现  

A CAN Bus Isolator Design and Implementation

作　　者：魏敏[1,2] 刘文怡[1,2] 杨静[3] 

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051 [2]仪器科学与动态测试教育部重点实验室,太原030051 [3]内蒙古财经大学,呼和浩特010070

出　　处：《科学技术与工程》2013年第28期8502-8507,共6页Science Technology and Engineering

摘　　要：设计的CAN总线隔离器是某型号弹上遥测设备,能够与弹上CAN总线节点以600 kps的传输速度进行数据交互,同时能够以60 kps的传输速度接受地面CAN总线节点发送的指令并按相同速率向地面反馈状态。总线隔离器实现了地面到弹上、弹上到地面的数据传输速度隔离。设计选用现场可编程门阵列(FPGA)作为逻辑控制芯片,以两片C8051F040单片机作为CAN接口通信芯片。从硬件电路、FPGA构造内部缓冲器及C8051F040波特率设置三个方面介绍了此设计,并给出了试验结果。The CAN bus isolator , which is a type of missile telemetry equipment , can interact data with CAN bus node on vehicle at 600 kbps. It also can receive command from ground console and send faceback at 60 kb- ps. The CAN bus isolator realizes speed isolation from vehicle and ground. The design selects of field-programmable gate array （FPGA） to control two pieces of C8051F040, which is embedded CAN bus controller and regarded as a bus isolator communication chip. The hardware circuit, FPGA fabriced internal FIFO, C8051F040 baud rate set- ting and test results are introduced.

关 键 词：数据传输 CAN总线 波特率设置 FPGA C8051F040 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]