ISO/IEC 14776-113-2002 信息技术.小型计算机系统接口(SCSI).第112部分:平行接口-3(SPI-3)
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【英文标准名称】:Informationtechnology-Smallcomputersysteminterface(SCSI)-Part113:Parallelinterface-3(SPI-3)
【原文标准名称】:信息技术.小型计算机系统接口(SCSI).第112部分:平行接口-3(SPI-3)
【标准号】:ISO/IEC14776-113-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC25
【标准类型】:()
【标准水平】:()
【中文主题词】:数据交换;定义;信息交换;小型计算机系统接口;界面;通信规程;接口(数据处理);配置;多触点连接器;电性能;数据总线;计算机;尺寸;信息技术;多语种的;规范;信息处理;机械性能;规范(验收);网络互连;数据处理
【英文主题词】:Communicationprocedures;Computers;Configuration;Databus;Dataexchange;Dataprocessing;Definition;Definitions;Dimensions;Electricalproperties;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces;Interfaces(dataprocessing);Mechanicalproperties;Multi-contactconnectors;Multilingual;Networkinterconnection;Smallcomputersysteminterface;Specification(approval);Specifications
【摘要】:TheSCSIprotocolisdesignedtoprovideanefficientpeer-to-peerI/Obuswiththemaximumnumberofhostsandperipheralsdeterminedbythebuswidth(8or16).Datamaybetransferredasynchronouslyorsynchronouslyatratesthatdependprimarilyondeviceimplementationandcablelength.SCSIisanI/Ointerfacethatmaybeoperatedoverawiderangeofmediaandtransferrates.TheobjectivesoftheparallelinterfaceinSCSIare:a)Toprovidehostcomputerswithdeviceindependencewithinaclassofdevices.Thus,differentdiskdrives,tapedrives,printers,opticalmediadrivesandotherSCSIdevicesmaybeaddedtothehostcomputerswithoutrequiringmodificationstogenericsystemhardware;b)ToprovidecompatibilitysuchthatconformingSCSI-2andSPI-2devicesmayinteroperatewithSPI-3devicesgiventhatthesystemsengineeringiscorrectlydone.ConformingSCSI-2andSPI-2devicesshouldrespondinanacceptablemannertorejectSPI-3protocolextensions.SPI-3protocolextensionsaredesignedtobepermissiveofsuchrejectionsandthusallowSCSI-2andSPI-2devicestocontinueoperationwithoutrequiringtheuseoftheextensions.ThisinternationalstandardenhancesthefunctionalityoftheSPI-2standard,andisintendedtobethechoicefornewdesignsovertheSPI-2standard.Somenewfeaturesare:fast-80datatransfers,doubletransition(DT)transfers,andCRConparalleltransfers.
【中国标准分类号】:L65
【国际标准分类号】:35_200
【页数】:291P;A4
【正文语种】:英语
【原文标准名称】:信息技术.小型计算机系统接口(SCSI).第112部分:平行接口-3(SPI-3)
【标准号】:ISO/IEC14776-113-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC25
【标准类型】:()
【标准水平】:()
【中文主题词】:数据交换;定义;信息交换;小型计算机系统接口;界面;通信规程;接口(数据处理);配置;多触点连接器;电性能;数据总线;计算机;尺寸;信息技术;多语种的;规范;信息处理;机械性能;规范(验收);网络互连;数据处理
【英文主题词】:Communicationprocedures;Computers;Configuration;Databus;Dataexchange;Dataprocessing;Definition;Definitions;Dimensions;Electricalproperties;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces;Interfaces(dataprocessing);Mechanicalproperties;Multi-contactconnectors;Multilingual;Networkinterconnection;Smallcomputersysteminterface;Specification(approval);Specifications
【摘要】:TheSCSIprotocolisdesignedtoprovideanefficientpeer-to-peerI/Obuswiththemaximumnumberofhostsandperipheralsdeterminedbythebuswidth(8or16).Datamaybetransferredasynchronouslyorsynchronouslyatratesthatdependprimarilyondeviceimplementationandcablelength.SCSIisanI/Ointerfacethatmaybeoperatedoverawiderangeofmediaandtransferrates.TheobjectivesoftheparallelinterfaceinSCSIare:a)Toprovidehostcomputerswithdeviceindependencewithinaclassofdevices.Thus,differentdiskdrives,tapedrives,printers,opticalmediadrivesandotherSCSIdevicesmaybeaddedtothehostcomputerswithoutrequiringmodificationstogenericsystemhardware;b)ToprovidecompatibilitysuchthatconformingSCSI-2andSPI-2devicesmayinteroperatewithSPI-3devicesgiventhatthesystemsengineeringiscorrectlydone.ConformingSCSI-2andSPI-2devicesshouldrespondinanacceptablemannertorejectSPI-3protocolextensions.SPI-3protocolextensionsaredesignedtobepermissiveofsuchrejectionsandthusallowSCSI-2andSPI-2devicestocontinueoperationwithoutrequiringtheuseoftheextensions.ThisinternationalstandardenhancesthefunctionalityoftheSPI-2standard,andisintendedtobethechoicefornewdesignsovertheSPI-2standard.Somenewfeaturesare:fast-80datatransfers,doubletransition(DT)transfers,andCRConparalleltransfers.
【中国标准分类号】:L65
【国际标准分类号】:35_200
【页数】:291P;A4
【正文语种】:英语
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