IDE Implementation Guide Rev 2-1

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1、WesternDigitalIDEImplementationGuideRevision2.0ApplicationsEngineeringMarch20011IDEImplementationGuideforAVApplicationsnTheIDEinterfaceisaverymatureandstableperipheralinterconnecttechnologythatisthecosteffectivechoiceforstorageapplicationsnThegoalofthispresentationis

2、toprovideageneralknowledgeofhowtodesignandimplementanIDEstoragesub-systemnThepresentationwillfocusonsystemefficiencyandcompatibilitynThepresentationwillexplainbasicIDEfeaturesnPleasefeelfreetocontactyourWesternDigitalrepresentativeformoredetailedinformationregardinga

3、nytopiccoveredinthispresentation2TableofContentsnIDEBasicsnBriefhistoryofIDE,ATAspecs,IDEcables,taskfileregistersnBasicIDEcommandsnPIOdatatransfersnPIOdatatransfermodesnPIOreadandwritecommandsnUltraDMAdatatransfersnUltraDMAprotocol,80conductorIDEcable,CRCdetectionnUl

4、traDMAreadandwritecommandsnImplementationguidelines-IDEcommandsnHowtomaximizeIDEperformancenHowtoavoidcertainknowncompatibilityissues,mountingrequirementsTogodirectlytoasection,pleasepress3WesternDigitalIDEBasicsIDECommandSetApplicationsEngineeringMarch20014QuickHist

5、oryofIDEnIDEisshortfor“IntegratedDriveElectronics”,sometimescalledATA(ATAttachment)nOriginallydevelopedasajointeffortbetweenWesternDigitalandseveralkeycomputerindustryplayersnTechnologyisbasedonthethen-standardWesternDigitalWD1003ATharddiskcontrollerandST506drivesnBe

6、causeoftechnologicaladvancesthatrequiredhighertransferratesonlargercapacitydrives,WesternDigital,in1993,introducedasetofrevolutionaryharddiskfeaturestoupdatetheIDEbus,calledEIDEorEnhancedIDEnExtendedthelifeoftheIDEbusasthepreferredinterconnecttechnologynDefinedhigher

7、datatransferrates,abilitytoconnectadditionaldrivespersystem,andsupportforlargercapacitydrivesnToreducetheoverallPCHostsystemcost,WesternDigitaldevelopedtheATAPI(ATApacketinterface)specificationsin1995toallowadditionaltypesofstoragedevicestobeattachedtotheIDEbusnCatal

8、ystthatspurredtheproliferationofaffordableCD-ROMdrivesineverypersonalcomputer5ATAStandardsDocumentnTheATAttachmentwithPacketInterfa