usb_otg_ip核中amba接口的设计与fpga实现

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1、ABSTRA(丁ABSTRACTAsalow—costandhigh-speedserialbus，USBbusplaysanimportantroleinalloftheperipheralinterfaces．WiththeOTG(On111eGo)technology,theapplicationareaofUSBismoreexpanded．USBOTGiswidelyused,whichisnotonlyforthemarketdemanding，butalsobenefitedforthedevelopmentofitsrelatedchip．IntheSoCdesign，o

2、n—chipbusesbasedonacommondesignmethodaremoreandmorepaidattention．DuetotheSOmanycustomers，theAMBAspecificationproposedbyARMisbecomingthefactostandinallcurrenton-chipbuses(OCB)．Inthisdissertation,theprocessandmethodsofhowtodesignacommonUSBOTGIP,whichisconformtoUSBOTGandAMBAspecification,andverifyit

3、，willbeclarified．TheUSBOTGsoftIPintroducedinthedissertationisdesignedwithoneOHCcontroller,oneEHCcontrollerandadevicecontroller．Besides．anOTGcontrolleriscontainedinthisIP,whichisusedtohandoverthefunctionofUSBOTGIP．AnexternalMCUisneededtoassistanalyzingtheUSBrelatedprotocol，SOtheAHBbusisusedtoconne

4、cttheIPandMCU．Firstly,howtodesigntheAHBinterfaceiselaboratedinthedissertation．AnAHBmaster,AHBslaveandDMAcontrollerarecontainedinthisinterfacemodule，whichisbasedonthereusablemethodologyandhandshakesynchronizationprotocol，CanprovidethePIOorDMAaccessingapproach．Then,inordertoverificatetheUSBOTGIP,ap

5、rototypeverificationplatformbasedonFPGAandARMmicrocontrollerissetup．Meanwhile，somemethodsabouttestandverificationareclarifiedinthedissertation．Lastly,theIPcorewithitscorrespondingdriversuccessfullypassedthefunctiontest．ItcanbeimplementedtoanUSBhostoradevice，andfilescanbetransferedintheFPGAtest．In

6、addition,IPhastheabilityof0TGwhichcallhandoVertherolebetweenUSBhostanddevice．Therefore，thisprojectachievesthebasicfeaturesofUSB2．0OTG皿withsomepracticabilityandreplicability．Keywords：USBOTG，AMBA，DMA，IntellectualPropertycore图目录图目录图1．1ISPl761功能框图2图1-2DesignWareIPSolutionsforAMBAInterconnect。5图2-1一个典

7、型的AMBA系统8图2．2AHB总线互连．．9图2．3一次INC4传输．12图2—4高速检测握手时序图18图3-1USB主机设备通信图解21图3．2USBOTGIP内部结构框图．22图3．3USB驱动体系结构．27图4．1复位器电路．30图4_2电平同步器．31图4_3下降沿检测同步器．．31图4-4脉冲同步器32图4-5同步FIFO结构33图4-6握手同步机制34图4．7AHB接口设计框图．．38图4．8全握手和部分握手流程比较4