基于fpfa的vga显示控制器设计.doc

基于FPFA的VGA显示控制器设计
摘要
目前,数码产品逐渐进入了人们生活的每一个领域,而此类产品大多都带有显示屏,可见对显示屏的控制电路进行研究具有很大的市场需求。VGA作为一种标准的显示接口得到了广泛的应用,同时基于VGA技术的显示控制器也拥有广泛的使用领域。
本文所设计的VGA控制器就是通过利用超大规模可编程逻辑器件FPGA和Altera公司开发的EDA设计软件Quartus II ,并采用自顶向下的VHDL设计方法,将该控制器分成用VHDL语言进行描述的五个子模块来实现的。在Quartus II ,完成了对该控制器的设计输入、综合、仿真和下载。在实验开发板上,也进行了硬件调试。调试结果表明,设计的VGA控制器能够正确地输出RGB颜色信号和时序控制信号,可以显示符合VGA工业标准的测试彩条信号,内置ROM信息,实时RAM信息,还能够分屏显示三路RGB图像信息,并在这几种模式之间灵活切换和通断。它工作稳定,达到了设计要求。
本设计利用了不同于以往传统的电子设计方法,具有修改灵活,高移植性,维护简单,可靠性好等优点。大大地缩短了设计周期,降低了生产成本。
关键词现场可编程门阵列;硬件描述语言;视频图像阵列
The VGA Display Controller Design Based on FPFA
Abstract
The currently, the digital products which most of them have a display screen entered in every area of people's lives gradually, so we can see the great market demand of the study on the control circuit .As a standard display interface has been widely used, the VGA display controller based on this VGA norm also has a broad field of use at the same time.
In this paper, designed through the use of ultra-large-scale programmable logic device-FPGA and Altera developed EDA design software Quartus II of version , and the VHDL top-down design methodology,the VGA controller was divided into five sub-modules which described with VHDL language. It has finished the design of the controller input, integrated, simulation, and download on Quartus II software platform,and it has carried out hardware debugging on the experimental development board. The results from debugging showed that the design of the VGA controller can output the color signals of RGB and the control signals correctly. It can show the images pliance with industry standard of VGA ,such as the color bar test signal, a built-ROM image, and a real-time RAM image, but also to show the three-way RGB image information on one screen separately,and it can make a choice between these types of models and control the output connect or work Stable and achieve the design requirements.
With the advantage of easily change, high