usb2.0接口控制芯片的固件設(shè)計(jì)與實(shí)現(xiàn)

1、分類號(hào)UDC注!密級(jí)Y967547。學(xué)位論文USB20接I：l控制芯片的固件設(shè)進(jìn)塹塞理(題名和副題名)李琦(作者姓名)指導(dǎo)教師姓名奎亡堊塾握電壬越撞太堂廑型(職務(wù)、職稱、學(xué)位、單位名稱及地址)申請(qǐng)專業(yè)學(xué)位級(jí)別碩士專業(yè)名稱信號(hào)多垡墾絲堡論文提交日期2Q鰻：壘論文答辯日期2QQ魚：』學(xué)位授予單位和日期電壬型撞太掌一答辯委員會(huì)主席評(píng)闋人2006年4月日注1：注明《國際十進(jìn)分類法UDC的類號(hào)。AbstraetAbstractUniversalS

2、erialBusrUSB)isanewtypeofserialbuswhichcomlectspedpherMstocomputersSinceitsadvent，USBhasrapidlybecomeastandardinterfacebetweenpersonalcomputers(PCs)andperipheralsforitshi曲transferspeedandapplicabilityAllPCsonmarkettodays

3、upportUSBinterfacewithnoexception，whilemanypefipheralsarefoundwithonlyUSBinterfacesItispredictablethatUSBwillbemoreandmorepopularwithitstransferspeedandapplicabilitybeingincreasedFirmwareisveryimportantinaUSBdeviceproiec

4、t，whichaffectsthetransferspeedofUSBdirectlyThisdissertationputsforwardanewsolutiononthefirmware’SdesignofflashmemorydiskbasedonstudylngUSB20protocol，massstorageclassandSmallComputerSystemInterface(SCSl)commandsetsthoroug

5、hlyThisdissertationdescribesthekeytechnologiesduringtherealizationoffirmwarebeingdesignedAndacompleterecordofproceduresandresultsthroughthefirmwarebeingdebuggedaresbownwhichtestifiesthatthefirmwareofUSB20ImerfacoControll

6、erASICachievesthedesiredsightsInaccordancewith—theMasterSlavearchitectureinUSB20protocol，theworkflowofthefirmwareisimplementedbasedoninterruptpatternThefirmwareprogramincludesthreesections：initializationmicrocontmllerand

7、alltheperipheralcircuits；interruptserviceroutine，whichtriggersinterruptsandexecutestheinterrupt；taskmodule，whichiscalledbytheISRDuringtheprocedureofrealization，mainprogrammeimplementstheinitializationofsystemandwaitsfort

8、heOCCUI_rCnccofinterrupt，theISRcallsthetaskmoduletoexecutetheoperationThefirmwareanalyzestheprotocolsanddoesnotdisturbthetransferofdataThus，thisprocedurecannotonlyguaranteethehi曲transferspeedandgoodsoftwarestructurebutal

9、sosimplifythedesignandtestDuetOthestricttimingrequirementsbyUSBprotocol，thefirmwaremusthandlecertainrequestsorstatuswithinvalidperiodsHenceduringthedebuggingprocess，informationsentbyoutputprogramthroughtheserialportcanbe