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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
2、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）四种图像。关键词VGA；FPGA；时序控制；电阻分压TheVGADisplayColorSignalGeneratorCircuitDesignAbstractThisdesigncompletedaVGAdisplaybasedonVHDLcontrolmodule,throughtheFPGAcontrolofimagesignalandtimingsignal,softwaredevelopmentenvironment
3、istheALTERAcompanyQuartusⅡ9.0.ThedesignusesVHDLlanguageprogramming,loadedconfigurationFPGAchip,theFPGAprocessing,signalthroughtheresistancepointspressure,throughtheVGAinterfaceoutput,themaincontrollerdesignbyALTERAcompanyⅢEP3C10E144C8chipCYCLONE.Objective
4、:toVGAdisplayinterfacethroughcontroldesign,understandingofthesuccessionoftheworkingprincipleVGAinterface,masterthroughthecounterproducessequentialcontrolsignalmethod.Results:throughthecompletethewholedesign,inthelastphaseofverification,throughthetwoswitch
5、control,canseeondisplayintheVGAstriped,perpendicularstriped,squares(eightkindsofcolor)fourkindofimage.KeywordsVGA;FPGA;Sequentialcontrol;Resistancepointspressure41.1.SystemDesignAplantoask:CantheVGAdisplayshowseightcolorgraphics(atype,squaretype),inthisde
6、signthroughtheexpansion,addingthetwocontrolswitch,usedtorealizethefourmodelsofstripeddisplay.Systemdesignscheme:(1)designideas:theFPGAdisplaysoftheVGAinterfacetocarryonthedesign,dataflowonlyneedinthewholesystemofinternalflow,anddon'tneedtorelyonthecompute
7、r,experimentsystemminimization,greatlyreducingthesizeofthecircuitboard,andincreasethereliabilityofsystemanddesignflexibility.VGAiscomputermonitorscommondisplaystandards,VGAinterfaceLCDmonitor,CRTmonitorstandardinterface,throughtheVGAcontrolLCD,CRTcanmaket
8、hewholesystemtobecomesmallandportable,makeapplicationrangegreatlyexpand.Inthedesignoftheserious,itistheneedtoputthereal-timedisplayimagesdirectly,inordertoverifythecorrectnessof4thedesign,soastomeettheneedsofallkind
