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1、DesignConEast2004Designofa6.25GbpsBackplaneSerDeswithTOP-downDesignMethodologySongWu,TexasInstrumentsIncSridharRamaswamy,TexasInstrumentsIncBhaveshBhakta,TexasInstrumentsIncPaulLandman,TexasInstrumentsIncRobertPayne,TexasInstrumentsIncVikasGupta,TexasInstrumentsIncBharatParthasara
2、thy,TexasInstrumentsIncSeemaDeshpande,TexasInstrumentsIncWaiLee,TexasInstrumentsInc1AbstractSerDesdesignexceeding6.25Gbpsforexistingbackplaneshastoovercomesignificantsignalintegritychallengesonchannelattenuation,crosstalk,andmultiplereflections.Adaptivedecisionfeedbackequalization
3、becomesarequirementtoovercomethesechallenges.Thenon-idealityfromsiliconimplementationisnotnegligibleforbiterrorratedegradation.Thispaperpresentsa6.25GbpsbackplaneSerDesdesignadoptingtopdowndesignmethodologyfromsystemlevelMatlabsimulationdowntotransistorlevelspicesimulationtooptimi
4、zethearchitectureanddesign.TheBERperformanceispredictedwithajointprobabilitydensityfunction(PDF)toaccountforalltheimpairmentsatthedecisionslicer.Author(s)BiographySongWuisthearchitectforTI6.25GbpsSerDes.Hehasworkedonsignalintegrityissuesanddesignedtheadaptivedecisionfeedbackequali
5、zerforTIsince2000.HejoinedTIinlate1995startingwithADSLresearchprogram.Heholds11patentsoncommunicationalgorithmsandchipdesign.SridharRamaswamyobtainedthePhDfromtheUniversityofIllinoisin1996.HeispresentlyworkingatTexasInstrumentsonhigh-speedreceiverdesignandverificationmethodologies
6、.Hehasauthoredovertwentypapersintheareasofdesign,modelingandsimulationandhasfivepatentsissuedinthesefields.BhaveshBhaktaisaMemberofGroupTechnicalStaffatTexasInstruments.Hehasadecadeofhigh-performancemixed-signalcircuitdesignexperienceincludingPLL,CDR,andequalizerdesignsindeepsub-m
7、icronCMOS.Mr.BhaktahasBSEEandMSECEdegreesfromUniversityofCalifornia,Irvine.PaulLandmanreceivedtheB.S.,M.S.,andPh.D.degreesinelectricalengineeringandcomputersciencefromU.C.Berkeleyin1989,1991,and1994,respectively.In1994hejoinedTexasInstrumentsinDallas,whereheiscurrentlyworkingonhig
8、h-speedseriallinktechnology.Rober
