USB与CAN总线的接口设计  

Interface Design of USB and CAN

作　　者：牛德青[1] 

机构地区：[1]中国兵器工业第五八研究所军品部,四川绵阳621000

出　　处：《兵工自动化》2007年第8期83-84,共2页Ordnance Industry Automation

摘　　要：USB总线与CAN总线的接口设计,由于CY7C68013A单片机支持USB2.0协议,采用其固件程序处理上位机驱动程序的请求,完成与上位机的USB通讯,并控制SJA1000,完成CAN报文帧的收发。SJA1000的地址、数据总线与CY7C68013A的I/O口相连,利用软件通过I/O口模拟SJA1000的通讯时序。The interface design of USB and CAN is based on CY7C68013A MCU supporting USB2.0 protocol. Its firmware deals with the request of PC, and completes the USB communication with PC. The firmware controls the SJA1000 and complete the sending and receiving of CAN frame. The AD bus of SJA1000 connected with the I/O of CY7C68013A. And the timing of SJA1000 is simulated from I/O by soft ware.

关 键 词：USB CAN 总线接口 CY7C68013A SJAL000 固件程序 

分 类 号：TP303.2[自动化与计算机技术—计算机系统结构]