| USB通信芯片CH375在数据交换中的应用 |
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| 引用本文： | 汤剑灵,高玉.USB通信芯片CH375在数据交换中的应用[J].电子工程师,2007,33(10):61-63. |
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| 作者姓名： | 汤剑灵 高玉 |
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| 作者单位： | 南京师范大学物理科学与技术学院,江苏省南京市,210097 |
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| 摘 要： | 针对传统的单片机系统数据存储和传输的不便之处,以考勤机为例,设计了一种在原来的考勤机系统中增加一片USB总线接口芯片CH375进行USB通信的方案,实现了考勤机与U盘/PC机之间的数据通信,既方便管理部门利用U盘来完成考勤数据的便捷存取,特别适用于数据量大,采集周期长的环境,又能实现考勤机系统通过USB数据线完成与PC机交换数据的功能。介绍了考勤机系统和CH375的硬件接口电路及其工作原理,给出了CH375作为主机以及从设备时的工作原理、主从模式切换以及软件流程。
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| 关 键 词： | 数据交换 考勤机 CH375 U盘 USB接口 |
| 修稿时间： | 2007-04-04 |
The Application of USB Communication Chip CH375 in Data Exchange |
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| TANG Jianling,GAO Yu.The Application of USB Communication Chip CH375 in Data Exchange[J].Electronic Engineer,2007,33(10):61-63. |
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| Authors: | TANG Jianling GAO Yu |
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| Affiliation: | School of Physics and Technology, Nanjing Normal University, Nanjing 210097, China |
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| Abstract: | In the light of disadvantage that traditional MCU system in data storage and exchange,this paper takes the work-checking system for example,present a new design scheme that using the CH375 chip to realize the data communication between work-checking system and U-disk or PC.It is convenient for management to store the data by U-disk,especially accommodates the circumstances of huge data and long-working cycle,and also the connection of MCU and computer can be realized.This paper describes interface of the MCU and CH375,operating principles for host/slave mode switching as well as relative software. |
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| Keywords: | data exchange work-checking system CH375 U-disk USB interface |
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