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基于嵌入式处理器EP9312的多串口扩展
引用本文:张闻捷,唐琎.基于嵌入式处理器EP9312的多串口扩展[J].计算机测量与控制,2007,15(8):1063-1066.
作者姓名:张闻捷  唐琎
作者单位:[1]中南大学信息科学与工程学院,湖南长沙410075 [2]国防科大通信与信息系统博士后流动站长城信息工作站,湖南长沙410007
基金项目:教育部留学回国人员科研启动基金
摘    要:在嵌入式产品中,大多需要与多个外设进行通信,一般的嵌入式处理器往往没有足够的串口接口,需要对CPU的串口模块进行扩展;文中详细介绍了利用SUPPERI/O控制芯片W83977EF/CTF对ARM9嵌入式处理器EP9312进行串口、PS/2接口和并口的扩展;描述了详细的连接方式,并给出了串口模块硬件设计电路图和初始化编程;串口模块在系统整合后运行稳定,经过实际测试表明,电路的设计符合了嵌入式系统的要求,满足了设计需要,目前该串口模块设计已在银税类终端产品上得到应用.

关 键 词:串口扩展  EP9312  W83977EF/CTF  硬件设计  嵌入式处理器  多串口扩展  Based  应用  终端产品  银税类  模块设计  嵌入式系统  电路图  实际测试  运行稳定  系统整合  初始化编程  模块硬件设计  连接方式  描述  并口  串口接口  控制芯片  利用
文章编号:1671-4598(2007)08-1063-04
收稿时间:2006-08-28
修稿时间:2006-10-19

Multi-serials Extension Based on EP9312
Zhang Wenjie,Tang Jin.Multi-serials Extension Based on EP9312[J].Computer Measurement & Control,2007,15(8):1063-1066.
Authors:Zhang Wenjie  Tang Jin
Affiliation:1. School of Information Science and Engineering, Central South University, Changsha 410083, China; 2. Hunan Computer Co. Ltd, National University of Defense Technology, Changsha 410007, China
Abstract:Most of the embedded products are required to communicate multi-peripheral equipment. But many embedded CPU have lacking serial ports. Multi-serials, PS/2, LPT extension of EP9312 based on W83977EF/CTF are introduced. The hardware design, initialization program and the circuit diagram of this embeddedsystem are introduced. The serial ports run steady after the system has been integrated. After testing, the design is up to the mustard for the embedded system. The serial ports design has been used in the bank and taxation terminal product.
Keywords:multi-serials extension  EP9312  W83977EF/CTF  hardware design
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