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1、3.Tosolvethetimingproblemsinhigh—speedcircuit,itestablishesthesimulationplatforminHyperlynxthrougheffectivedevicemodel(IBISmodel).Itmodifiestheset-uptimeandtheholdtimeprovidedbydevicedatahandbook,SOtheoutputdelayoftheclocksignalcanbedetermined.Moreowr,basedonthetimingrequirementsofDSPandSDRAM,des
2、ignsshouldmeetthewiringconstraintconditionsofthePCBlayout.Hence,layoutengineersCanuseourproposedrulerstodesigntheirboard.4.Tosolvethepowerintegrityproblemsofthehigh—speedcircuit,thearticleproposesamethodofinhibitingparallelresonantofPDNthroughincreasingdecouplingbranchloss.Itintroducesaseriesresi
3、stanceintothedecouplingbranchtomakePDNlossincrease,whichsuppressesPDNparallelresonant.ThetheoreticalmodelisprovidedandsupportedbysimulationexperimentonHyperlynxPIsoftware.Theresultsshowthat,thequalityfactorofPDNatparallelresonantwillbeinhibitedfrom282to13throughintroducinga0.45Qresistanceintodeco
4、uplingbranch.Thispaperalsoanalyzestheeffectsoftheintroducingresistancetodecoupling.Whentheintroducingresistanceislessthan0.45Qitcallcompensatefortheinfluenceofdecouplingthroughdoublingthenumberofdecouplingcapacitors.Keywords:signalintergrity,reflectionnoise,crosstalknoise,timinganalysis,power-sup
5、plydistributionnet目錄第一章緒論??????????????????????????????l1.1引言?????????????????????????????..11.2高速數(shù)字電路的信號完整性???????????????????..11.3信號完整性的分析方法??????????????????????21.3.1電路分析方法???????????????????????21.3.2電磁場分析方法??????????????????????31.3.3綜合分析方法??????????????????????..31.4信號完整性的研究現(xiàn)狀????????????
6、?????????。41.5論文的主要工作及創(chuàng)新點????????????????????。61.5.1課題研究背景??????????????????????。61.5.2論文的工作安排?????????????????????..71.5.3主要創(chuàng)新點???????????????????????..7第二章高速電路的信號完整性?????????????????????。82.1信號完整性中傳輸線理論????????????????????..82.1.1單一的傳輸線??????????????????????..82.1.2差分對和差分阻抗????????????????????l
7、l2.2單一網(wǎng)絡(luò)的反射研究??????????????????????.122.2.1反射理論????????????????????????.122.2.2抑制反射噪聲的方法???????????????????。132.3多個網(wǎng)絡(luò)間的串?dāng)_研究?????????????????????152.3.1串?dāng)_理論????????????????????????l52.3.2抑制串?dāng)_噪聲的方法????????????????????202