PXI设计规范

HardwareSpecificationPCIeXtensionsforInstrumentationAnImplementationofPXIHardwareSpecificationRev.2.209/22/2004Revision2.2September22,2004®PXIHardwareSpecificationRev.2.209/22/2004ii©Copyright1997–2004PXISystemsAlliance.Allrightsreserved.ThisdocumentiscopyrightedbythePXISystemsAlliance.Permissionisgrantedtoreproduceanddistributethisdocumentinitsentiretyandwithoutmodification.NOTICEThePXIHardwareSpecificationisauthoredandcopyrightedbythePXISystemsAlliance.TheintentofthePXISystemsAllianceisforthePXIHardwareSpecificationtobeanopenindustrystandardsupportedbyawidevarietyofvendorsandproducts.VendorsanduserswhoareinterestedindevelopingPXI-compatibleproductsorservices,aswellaspartieswhoareinterestedinworkingwiththePXISystemsAlliancetofurtherpromotePXIasanopenindustrystandardareinvitedtocontactthePXISystemsAllianceforfurtherinformation.ThePXISystemsAlliancewantstoreceiveyourcommentsonthisspecification.VisitthePXISystemsAlliancewebsiteat’sproducts.ThePXISystemsAlliancemakesnowarrantyofanykindwithregardtothismaterial,including,butnotlimitedto,theimpliedwarrantiesofmerchantabilityandfitnessforaparticularpurpose.ThePXISystemsAllianceshallnotbeliableforerrorscontainedhereinorforincidentalorconsequentialdamagesinconnectionwiththefurnishing,performance,oruseofthismaterial.CompliancewiththisspecificationdoesnotabsolvemanufacturersofPXIequipmentfromtherequirementsofsafetyandregulatoryagencies(UL,CSA,FCC,IEC,etc.).TrademarksPXI™isatrademarkofthePXISystemsAlliance.PICMG™andCompactPCI®aretrademarksofthePCIIndustrialComputationManufacturersGroup.Productandcompanynamesaretrademarksortradenamesoftheirrespectivecompanies.©PXISystemsAllianceiiiPXIHardwareSpecificationRev.2.209/22/2004PXISpecificationRevisionHistoryThissectionisanoverviewoftherevisionhistoryofthePXIspecification.Revision1.0,August20,1997ThisisthefirstpublicrevisionofthePXIspecification.Revision2.0,July28,2000Thisrevisionincorporateschangesthatincludebutarenotlimitedtothefollowing:TransferofthespecificationownershiptothePXISystemAlliance.ModificationofpinassignmenttocomplywithPICMG2.0R3.0thatincludeadditionofGA0-GA4signalstoallslots,removalofPRST#,DEG#,andFAL#fromperipheralslots,additionofIPMBbustoallslots,additionofHEALTHY#toallslots,additionofSMBbustosystemslot,additionofBD_SEL#toperipheralslots,changingSYSEN#toUNConperipheralslots,andchangingIDSELtoGNDonsystemslot.RemovalofreferencestoSerializedIRQduetoPICMG2.0R3.0adoption.Additionof66MHzPCIoperation.RemovalofJ5asareservedconnector.AllowanceofJ5tobepopulatedonlyincustomPXIboardsandbackplanesthatareofferedasasystem.AllowanceforstartriggerroutingsotherthanonlyperipheralslotsinfirsttwosegmentsinPXIbackplaneswithmorethantwosegments.Allowanceforthelocalbustoberoutedbetweensegments.AdditionofrulesaboutconnectingtheIDSELlinesoffirstsegmentPCIdevices,bridges,andperipheralslotstoAD[25:31]androutingperipheralslotINTlinestosystemslotINTlinesbasedontheperipheralslotIDSELtoAD[25:31]connection.Increasedrequiredcurrenton3.3Vfora5Vbackplanetocomplywithrequirementof3.3VbeingavailableaccordingtoPICMG2.0R3.0AdditionofWindows98andWindows2000softwareframeworks.RemovalofrequirementsforPC9Xcomplianceforcontrollersandperipherals.Additionofsegmentdividerglyph.RemovalofSHALLNOTruleforchassisgroundtodigitalgroundconnectionandadditionofSHOULDNOTrecommendationforchassisgroundtodigitalground.ModificationofrequirementsforEMCthatincludeschangingIEC61326-1:1997toIEC61326?1:1998andIECCISPR-11toEN5501.AdditionofmaximumVohandminimumVolvaluesfortriggerbus.Modificationofthelegalnotice.AdditionoflicenserequirementforuseofthePXIlogo.Revision2.1,February4,2003Thisrevisionincorporateschangesthatincludebutarenotlimitedtothefollowing:Removalofsoftwarerelatedrules(RefertothenowseparatePXISoftwareSpecification).RemovalofJ4asareservedconnector.Additionofrulesassociatedwith6Uchassisthatsupportstackingoftwo3Umodulesinasingle6Uslot.Additionofarulethatlimitsthemaximumnumberofslotsinachassisto31.Combiningthechassispowersupplyminimumpowerrequirementstablesintoonetableandremovingtherecommendedcurrententriesinfavorof