摘要
为了实现ARM手持式仪器与PC机之间的高速通信,基于ARM存储器映像技术,采用CH375接口芯片,设计了总线式USB接口电路,通过分析CH375的命令集和工作时序,编写了ARM与PC机的数据通信软件。试验结果表明,由此构建的手持式仪器USB接口,结构简单、性能可靠,并已应用于手持式数字信息系统(DIS)中。
In order to realize the high-speed communication between ARM handheld instrument and personal computer, USB interface of bus type is designed based on ARM memory image technology and by adopting CH375 interface chip. Through analzing CH375 command set and working sequence, the data communication software between ARM and personal computer is programmed. The test result shows that the USB Interface constructed in this way is simple, and reliable property. It has been used in handheld digital information system （DIS）.
出处
《自动化仪表》
CAS
2006年第12期54-56,62,共4页
Process Automation Instrumentation
