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1、VGA显示器彩色信号发生器电路设计【摘要】本设计完成了一个基于VHDL的VGA显示控制模块,通过FPGA控制图像信号与时序信号,软件的开发环境是ALTERA公司的QuartusⅡ9.0。设计运用VHDL语言编程,配置加载FPGA芯片,经FPGA处理,信号通过电阻分压,由VGA接口输出,设计的主控制器采用ALTERA公司的CYCLONEⅢEP3C10E144C8芯片。目的:通过对VGA接口的显示控制设计,理解VGA接口的时序工作原理,掌握通过计数器产生时序控制信号的方法。结果:通过完成整个设计,在最后验证阶段,通过两个开关的控制,可以在VGA显示器上看到横彩条、竖彩条、方格(八种颜色)四种图
2、像。关键词VGA;FPGA;时序控制;电阻分压TheVGADisplayColorSignalGeneratorCircuitDesignAbstractThisdesigncompletedaVGAdisplaybasedonVHDLcontrolmodule,throughtheFPGAcontrolofimagesignalandtimingsignal,softwaredevelopmentenvironmentistheALTERAcompanyQuartusⅡ9.0.ThedesignusesVHDLlanguageprogramming,loadedconfiguration
3、FPGAchip,theFPGAprocessing,signalthroughtheresistancepointspressure,throughtheVGAinterfaceoutput,themaincontrollerdesignbyALTERAcompanyⅢEP3C10E144C8chipCYCLONE.Objective:toVGAdisplayinterfacethroughcontroldesign,understandingofthesuccessionoftheworkingprincipleVGAinterface,masterthroughthecounterp
4、roducessequentialcontrolsignalmethod.Results:throughthecompletethewholedesign,inthelastphaseofverification,throughthetwoswitchcontrol,canseeondisplayintheVGAstriped,perpendicularstriped,squares(eightkindsofcolor)fourkindofimage.KeywordsVGA;FPGA;Sequentialcontrol;Resistancepointspressure51.1.System
5、DesignAplantoask:CantheVGAdisplayshowseightcolorgraphics(atype,squaretype),inthisdesignthroughtheexpansion,addingthetwocontrolswitch,usedtorealizethefourmodelsofstripeddisplay.Systemdesignscheme:(1)designideas:theFPGAdisplaysoftheVGAinterfacetocarryonthedesign,dataflowonlyneedinthewholesystemofint
6、ernalflow,anddon'tneedtorelyonthecomputer,experimentsystemminimization,greatlyreducingthesizeofthecircuitboard,andincreasethereliabilityofsystemanddesignflexibility.VGAiscomputermonitorscommondisplaystandards,VGAinterfaceLCDmonitor,CRTmonitorstandardinterface,throughtheVGAcontrolLCD,CRTcanmakethew
7、holesystemtobecomesmallandportable,makeapplicationrangegreatlyexpand.Inthedesignoftheserious,itistheneedtoputthereal-timedisplayimagesdirectly,inordertoverifythecorrectnessof5thedesign,soastomeettheneedsofallkind