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1、III·基于FPGA地LED顯示接口電路設(shè)計(jì)摘要LED顯示器廣泛應(yīng)用于交通、證券、電信、廣告和宣傳領(lǐng)域,它具有壽命長、功耗低、亮度高、驅(qū)動(dòng)簡單、響應(yīng)速度快,且可隨意拼裝等優(yōu)點(diǎn).現(xiàn)在市場上諸多廣告牌LED視頻屏造價(jià)過于昂貴,刷新頻率較低,單色屏地顯示功能又過于單一,大多需要上位機(jī)對(duì)顯示過程進(jìn)行實(shí)時(shí)控制,并且對(duì)于大屏幕地系統(tǒng)性能有待提高.針對(duì)以上問題本文討論了利用FPGA與單片機(jī)相結(jié)合地方法控制實(shí)現(xiàn)多路點(diǎn)陣列顯示地技術(shù),以FPGA芯片為核心,其基于FPGA地雙口RAM配置和驅(qū)動(dòng)控制電路設(shè)計(jì)成功地解決了傳統(tǒng)LED大屏幕設(shè)計(jì)中控制系統(tǒng)復(fù)雜、可靠性差地問題
2、.文中給出了系統(tǒng)地軟、硬件實(shí)現(xiàn),介紹了其設(shè)計(jì)思想、層次結(jié)構(gòu),在QUARTUSⅡ平臺(tái)下,利用編程和圖形文件結(jié)合地方法實(shí)現(xiàn)了軟件設(shè)計(jì),經(jīng)波形仿真驗(yàn)證后,得到了RTL電路連接.實(shí)踐證明,該系統(tǒng)工作正常,達(dá)到了預(yù)期地功能.文檔來自于網(wǎng)絡(luò)搜索關(guān)鍵詞:LED點(diǎn)陣列,FPGA控制器,VHDL,雙口RAMIII·TheRealizationofLEDDisplayInterfaceCircuitBasedonFPGA文檔來自于網(wǎng)絡(luò)搜索ABSTRACTLEDdisplayhasmanyadvantage,suchaslonglifetime,lowpowercon
3、suming,highbrightness,canbeeasilydriving,quickinrespondencespeed,andcanbeeasilyassembledandsoon.Butnowadays,LEDdisplaydeviceinmarketisveryexpensive,abitlowerinrefurbishingfrequencyanddisplayfunctionofone-colouredscreenistoounitary.mostneedthesuperiormachinetocarryonthereal-ti
4、mecontroltothedemonstrationprocess.largescreen'ssystemperformancearestillneedtoenhance.DiscussedthemethodcontrolwhichinviewofcurrentsituationthisarticleunifiedusingFPGAandthemonolithicintegratedcircuittorealizethemulti-channelspotarraydemonstrationtechnology,takingtheFPGAchip
5、asthecore.pairofmouthRAMandCircuitdesignofscanningcontrollerwhicharebasedonFPGAsolvesthecontrolsystemtobecomplexandbadreliableprobleminthetraditionalLEDlargescreensuccessfully.Inthearticle,itgavestherealizationofsystem'ssoftwareandhardware.Thetextintroducesitsdesignidea,thela
6、yerstructure.UndertheQUARTUSII,usingthetexteditorandpicturefiletocombineandcareoutthesoftwaredesign.Afterverificationofwageforeimitate,hardwareelectriccircuitisrealized.Inpractice,Thissystemworksnormally,Thedisplaycharactersshowaccurateandstable.文檔來自于網(wǎng)絡(luò)搜索KEYWORDS:LEDarray,FPG
7、Acontrolle,VHDL,doublemouthRAM文檔來自于網(wǎng)絡(luò)搜索目錄III·摘要II文檔來自于網(wǎng)絡(luò)搜索ABSTRACTIII文檔來自于網(wǎng)絡(luò)搜索1緒論1文檔來自于網(wǎng)絡(luò)搜索1.1FPGA地概述1文檔來自于網(wǎng)絡(luò)搜索1.1.1FPGA地發(fā)展1文檔來自于網(wǎng)絡(luò)搜索1.1.2FPGA地應(yīng)用2文檔來自于網(wǎng)絡(luò)搜索1.2FPGA地設(shè)計(jì)流程3文檔來自于網(wǎng)絡(luò)搜索1.3FPGA地設(shè)計(jì)優(yōu)勢4文檔來自于網(wǎng)絡(luò)搜索1.4面向FPGA地EDA開發(fā)流程5文檔來自于網(wǎng)絡(luò)搜索2LED7文檔來自于網(wǎng)絡(luò)搜索2.1LED顯示屏地發(fā)展7文檔來自于網(wǎng)絡(luò)搜索2.1.1LED顯示屏地國內(nèi)
8、發(fā)展現(xiàn)狀8文檔來自于網(wǎng)絡(luò)搜索2.1.2LED顯示屏地發(fā)展趨勢9文檔來自于網(wǎng)絡(luò)搜索2.2LED顯示屏地結(jié)構(gòu)及其示意圖10文檔來自于網(wǎng)絡(luò)搜索