基于FPGA的LED显示接口电路设计.doc

PAGEIVPAGEIII·基于FPGA的LED显示接口电路设计摘要LED显示器广泛应用于交通、证券、电信、广告和宣传领域，它具有寿命长、功耗低、亮度高、驱动简单、响应速度快，且可随意拼装等优点。现在市场上诸多广告牌LED视频屏造价过于昂贵，刷新频率较低，单色屏的显示功能又过于单一，大多需要上位机对显示过程进行实时控制，并且对于大屏幕的系统性能有待提高。针对以上问题本文讨论了利用FPGA与单片机相结合的方法控制实现多路点阵列显示的技术，以FPGA芯片为核心，其基于FPGA的双口RAM配置和驱动控制电路设计成功地解决了传统LED大屏幕设计中控制系统复杂、可靠性差的问题。文中给出了系统的软、硬件实现，介绍了其设计思想、层次结构，在QUARTUSⅡ平台下，利用编程和图形文件结合的方法实现了软件设计，经波形仿真验证后，得到了RTL电路连接。实践证明，该系统工作正常，达到了预期的功能。关键词：LED点阵列，FPGA控制器，VHDL，双口RAMTheRealizationofLEDDisplayInterfaceCircuitBasedonFPGAABSTRACTLEDdisplayhasmanyadvantage,suchaslonglifetime,lowpowerconsuming,highbrightness,canbeeasilydriving,quickinrespondencespeed,andcanbeeasilyassembledandsoon.Butnowadays,LEDdisplaydeviceinmarketisveryexpensive,abitlowerinrefurbishingfrequencyanddisplayfunctionofone-colouredscreenistoounitary.mostneedthesuperiormachinetocarryonthereal-timecontroltothedemonstrationprocess.largescreen'ssystemperformancearestillneedtoenhance.DiscussedthemethodcontrolwhichinviewofcurrentsituationthisarticleunifiedusingFPGAandthemonolithicintegratedcircuittorealizethemulti-channelspotarraydemonstrationtechnology,takingtheFPGAchipasthecore.pairofmouthRAMandCircuitdesignofscanningcontrollerwhicharebasedonFPGAsolvesthecontrolsystemtobecomplexandbadreliableprobleminthetraditionalLEDlargescreensuccessfully.Inthearticle,itgavestherealizationofsystem'ssoftwareandhardware.Thetextintroducesitsdesignidea,thelayerstructure.UndertheQUARTUSII,usingthetexteditorandpicturefiletocombineandcareoutthesoftwaredesign.Afterverificationofwageforeimitate,hardwareelectriccircuitisrealized.Inpractice,Thissystemworksnormally,Thedisplaycharactersshowaccurateandstable.KEYWORDS:LEDarray,FPGAcontrolle,VHDL,doublemouthRAM目录TOC\h\z\t"正文章标题,1,正文小节标题格式,3,正文节标题,2,致谢标题,1,附录标题,1,中文摘要标题,1,英文摘要标题,1"HYPERLINK\l"_Toc354755884"摘要PAGEREF_Toc354755884\hIIHYPERLINK\l"_Toc354755885"ABSTRACTPAGEREF_Toc354755885\hIIIHYPERLINK\l"_Toc354755886"1绪论PAGEREF_Toc354755886\h1HYPERLINK\l"_Toc354755887"1.1FPGA的概述PAGEREF_Toc354755887\h1HYPERLINK