USB/RS232转换器的实现  

Implementation of USB/RS232 converter

作　　者：胡建平[1] 李雪红[2] 戴华林[1] 

机构地区：[1]天津城市建设学院计算机科学与技术系,天津300384 [2]长安大学地测学院,陕西西安710064

出　　处：《天津城市建设学院学报》2004年第1期72-75,共4页Journal of Tianjin Institute of Urban Construction

摘　　要：USB作为一种新的PC机互连协议,使外设到计算机的连接更加高效、便利,是计算机外设接口的发展趋势,将逐步取代RS232协议串口,因此很多传统的RS232接口设备都将面临一个向USB接口转换的问题.在实验的基础上总结出利用FT232BM芯片来开发USB/RS232转换器是最为简洁有效的方案,详细介绍了USB/RS232双向转换芯片FT232BM的工作原理、内部结构、引脚分布及功能,给出了利用FT232BM实现USB/RS232转换器的典型设计电路.As a new PC interconnection protocol,USB makes the connection between the peripherals and PC much more efficient and convenient.It is a developmental tendency of peripheral interface of computer,and will replace the RS232 step by step .Therefore, many traditional RS232 peripherals face the problem of converting to USB peripherals. Based on the experimental study, it was found that the most convenient and efficient way to develop the USB/RS232 converter is to use the FT232BM I. C. The working principle, block diagram, function and pin-out of the FT232BM are introduced in detail. And the typical design circuit of implementing USB/RS232 converter by use of FT232BM is given.

关 键 词：USB/RS232转换器 PC机 串行通信 USB 

分 类 号：TP335[自动化与计算机技术—计算机系统结构]