USB接口電路的設計與實現(xiàn)——接收端的設計.pdf

1、電子科技大學碩士學位論文USB接口電路的設計與實現(xiàn)——接收端的設計姓名：劉志平申請學位級別：碩士專業(yè)：微電子學與固體電子學指導教師：李平20030501USB接口電路的設計與實現(xiàn)一接收端的設計ABSTRACTUniversalSerialBus(USB)isnewtechnologyaboutinterfaceincomputerapplication.USBhasbeenusedwidelysincethewindowsoperati

2、onsystemsupportedtheUSBinterfaceincomputer.ThemajorgoalofUSBwastodefineanexternalexpansionbuswhichmakesaddingperipheralstoaPCaseasyashookingupatelephonetoawall一Jack.Theprogramsdrivinggoalswereeaseofuseandlowcost.Thesewer

3、eenabledwithanexternalexpansionarchitecture.UniversalSerialBus(USB)isoneofthemostimportantdevelopmentsinPCperipheralInterconnecttechnologysincetheintroductionofserialandparallelportsintheearly1980s.ThebenefitsofUSB，sucha

4、seaseofuseplugandplayhighperformanceandreducedoverallsystemcostarejustafewofthereasonsthistechnologyhasgonefromspecificationtoproductdevelopmentinlessthan2years.itsupportslowspeed(1.5Mbs)fullspeed(12Mbs)andhighspeed(480M

5、bs)datatransmission.TheUSBdevicescanbeconnectedwiththePConthecomputersUSBinterfaceandalsoconnectedwithPCthroughtheHUB.SotheUSBiswidelyused.ThispapermainlyintroducestheUSBworkprinciple，thecommunicationprotocolofUSBbussyst

6、emstructuredatatransmissionmethoddataflowmodelofUSB.AnideaisbroughtforthtodesignthetotalstructureoftheUSBinterfaceIPthemaincontrollogic，theMCUinterface(thefunctionisthesameasthePDIUSBDI2chipofthePHILIPSsemiconductor)anda

7、DPLLwhichisusedtosynchronizedataandseparatetheclock.ThispaperalsointroducesPacketrecognitiontransactionsequencingSOPEOPRESETRESUMEsignaldetectiongenerationNRZIDataencodingdecodingandbit一stuffingCRCgenerationandchecking(T