电子双板中双屏分屏器的USB模块设计与研究

发布时间：2019-05-16 07:21

【摘要】：随着技术的发展,双屏显示能实现在两个显示屏上扩展显示同一图像或独立显示不同的图像,甚至更多屏,如三屏、四屏等显示。本设计中的双屏器是应用于电子双板课堂教学平台的,它对教育教学产生了巨大的影响。在中国,一些学校已经安装并使用这种设备。本设计旨在设计双屏分屏器的USB模块,在明确双屏分屏器的设计思想的基础上,集中精力完成USB的开发。USB是实现双屏显示的重要环节,它被用来传输显示器的显示器控制信息EDID数据及分屏信息,最终实现USB显示器功能。论文给出了USB硬件电路的设计,使用的USB控制器芯片是Cypress公司的EZ-USB FX2系列芯片,型号是CY7C68013。CY7C68013是USB2.0集成微处理芯片,内部集成了8051内核,提高了处理速率。芯片集成了串行接口引擎(SIE)、USB收发器、片上RAM、 FIFO和GPIF接口。芯片功能强大,具有硬件的可实现性,及软件程序编写的便利性。EZ-USB具有开发固件的框架程序,用户可根据自己的需要编写特定功能的固件。本文实现USB HID类设备开发,具体属于显示器控制设备类,开发实现USB显示器。本文除对USB基本原理的介绍,硬件和软件的设计之外,也对FPGA模块、AD模块、DA模块的硬件及功能做了简单描述,整个要实现双屏显示是所有这些模块共同实现的。本文的研究为教学资源的发展提供重要的帮助,具有深远意义。
[Abstract]:With the development of technology, dual-screen display can expand the display of the same image or display different images independently on two displays, or even more screens, such as three screens, four screens and so on. The double screen in this design is applied to the electronic double board classroom teaching platform, which has a great influence on education and teaching. In China, some schools have installed and used this equipment. The purpose of this design is to design the USB module of the double screen splitter. On the basis of defining the design idea of the double screen splitter, we concentrate on the development of USB. USB is an important link to realize the double screen display. It is used to transmit the display control information EDID data and screen information of the display, and finally realize the function of USB display. In this paper, the design of USB hardware circuit is given. The USB controller chip is the EZ-USB FX2 series chip of Cypress Company, and the model CY7C68013.CY7C68013 is USB2.0 integrated microprocessing chip, which integrates 8051 kernel internally and improves the processing rate. The chip integrates serial interface engine (SIE), USB transceiver, on-chip RAM, FIFO and GPIF interface. The chip has powerful function, hardware realizability and convenience of software programming. EZ-USB has the framework program to develop firmware, and users can write firmware with specific functions according to their own needs. This paper realizes the development of USB HID equipment, which belongs to the class of display control equipment, and develops and implements USB display. In this paper, in addition to the introduction of the basic principle of USB and the design of hardware and software, the hardware and functions of FPGA module, AD module and DA module are also briefly described. The whole realization of dual-screen display is realized by all these modules. The research in this paper provides important help for the development of teaching resources and has far-reaching significance.
【学位授予单位】：华中师范大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP334.7

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