基本信息
| 标准名称： | 软磁铁氧体材料系列及测试方法 |
| 英文名称： | Series and measuring methods for soft material made of magnetic oxides |
| 中标分类： |
电子元器件与信息技术 >>
电子元件 >>
磁性元器件 |
| 替代情况： | 被SJ/T 1766-97代替 |
| 发布日期： | |
| 实施日期： | 2000-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 7页 |
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引用标准
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所属分类： 电子元器件与信息技术 电子元件 磁性元器件
【英文标准名称】:InformationTechnology–MicroprocessorSystems–ControlandStatusRegisters(CSR)ArchitectureforMicrocomputerBuses
【原文标准名称】:信息技术.微处理机系统.微处理机总线的控制和状态登记(CSR)体系结构
【标准号】:ANSI/IEEE1212-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2002-05-02
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:信息技术;微处理机;建筑设计
【英文主题词】:Architecturaldesign;Computersoftware;CSRarchitecture;Datacommunication;Dataprocessing;Definition;Definitions;Informationexchange;Informationinterchange;Informationprocessing;Informationtechnology;Informationtransfer;Interfaces(dataprocessing);Microprocessorsystems;Microprocessors;Minicomputer;Network;Networkinterconnection;Personalcomputers;Read-onlymemory;Sizes
【摘要】:Thisisafull-usestandard,arevisionofISO/IEC13213:1994;itsscopereflectsaccumulatedexperiencewiththeCSRarchitecturesinceitwasfirstpromulgatedasastandardin1991.Intheinterveningyears,twobusstandards,ScaleableCoherentInterface(SCI),IEEEStd1596-199x,andSerialBus,IEEEStd1394-1995,havebeenthesourceofmostpracticalimplementationexperience.TherevisedscopeoftheCSRarchitectureisgivenbelow:a)Theoverallarchitecturalframeworkpartitionsthetotalavailableaddressspaceintoequalspacesavailabletoindividualnodes.Anode'saddressspaceisinturnpartitionedintoregionswhichhavedifferentusagemodels,e.g.,memoryspace,privatespaceforvendoruses,configurationROMandanI/Ospace(unitsspace)wheretransactionsmayhavesideeffects;b)Aminimaltransactionset(read,writeandlockrequestsandtheirassociatedcompletionresponses)requiredforcompliantbusstandards.Busbridgescompliantwiththisarchitecture,whetherinahomogeneousorheterogeneousenvironment,arealsoexpectedtotransportthistransactionset;c)Fundamentalcontrolandstatusregisters(CSRs)aredefinedtoprovideacommoninfrastructureforallcompliantbuses.Insomecasesthedetailsoftheregistersareentirelybus-dependentbutthefunctioniscommontoallcompliantbuses;d)MessagerequestandresponseCSRsarespecifiedtoenabledirecteddeliveryorbroadcastofmessagestomultiplenodes.Themessageformatpermitsorganizationsorvendorstodefinethemeaningofthedatapayloadwithouttheneedforacentralizedregistryofallpossibleformats;ande)ConfigurationROMprovidesself-descriptivedatastructuresthatpermitnodestouniformlycharacterizethedeviceservicesavailable.Thisiscriticalforbusesthatpermitliveinsertionandremovalofnodes;eachnewlyinsertednodecontainssufficientinformationforittobeuniquelyidentifiedandfortherequisitedevicedriverstobeloaded.AlthoughtheoriginalCSRarchitectureanticipatedwidespreaddevelopmentofbridgesbetweenheterogeneousbusstandardsandadiversityofaddressingmodes,bothfixedandvariable,nosuchimplementationshavebeenmade.Asaconsequence,themostsignificantchangesinscopebetweentheearlierCSRarchitectureandthisstandardaretheadoptionofasingle,fixedaddressingmodelandtheremovaloftutorialmaterialpertainingtothedesignofbridges.
【中国标准分类号】:L60
【国际标准分类号】:35_160
【页数】:
【正文语种】:英语