标签: ieee1149

IEEE1149IEEEStd1149.1-2001(RevisionofIEEEStd1149.1-1990)IEEEStandardTestAccessPortandBoundary-ScanArchitectureSponsorTestTechnologyStandardsCommitteeoftheIEEEComputerSocietyApproved14June2001IEEE-SAStandardsBoardAbstract:Circuitrythatmaybebuiltintoanintegratedcircuittoassistinthetest,maintenance,andsupportofassembledprintedcircuitboardsisdefined.Thecircuitryincludesastandardinterfacethroughwhichinstructionsandtestdataarecommunicated.Asetoftestfeaturesisdefined,includingaboundary-scanregister,suchthatthecomponentisabletorespondtoaminimumsetofinstructionsdesignedtoassistwithtestingofassembledprintedcircuitboards.Also,alanguageisdefinedthatallowsrigorousdescriptionofthecomponent-……