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1、DesignofTrainControlandMonitoringSystemInUsingJTAGYongsooSong,Tea-hwanKo,Seong-hoHanSystemsEngineeringTeamofKoreaRailroadResearchInstitute360-1Woulam-DongUiwang-City,Kyonggi-do,KoreaTel:+82-31-460-5668E-mail:adair@krri.re.krAbstract—RecentlymanytechnologyoftheT.C.M.S
2、.(TrainControlandMonitoringSystem)hasbeenintroducedforanefficientreal-timeoperatingsystem.Buttheproblemsoftestingincreasingcomplexdigitalintegratedsystemcontinuetochallengethedesignandtestcommunity.I.C.E.(In-CircuitEmulation)implementationcanbeateithertheboardorchipl
3、evel.MostICEsareboard-leveldesignssuitableforboard-leveltargetsystems.However,inresponsetotheneedforbetterperformance,morefunctionality,andahigherdegreeofintegration.SowecomparedARMcoretoMotorola680xxindesignmainprocessorpartthatcanbeusedonrailroadsynthesisTiltingTra
4、inmaincontrolpart.IndexTerms—TCMS,ICE,ARM.I.INTRODUCTIONJ.T.A.G.(JointTestAccessGroup)isthestandardofIEEEStd1149.1-1990,IEEEStandardTestAccessPortandBoundary-scanArchitecture.AndJTAGportisfoundinallthehardwarewhichisproducedrecently.Butitscommonuseisjustloadingprogra
5、mswithindependentcommunicationbetweenhostboardandtargetboard.Ifthesystemiscompleted,youmustfirstinspectpowerofimpressedsystemandseeifitssupplylineforeachdeviceoperatesproperly.Youalsoexamineconnectionsofeachpinwithtesterorjumpertesterandconfirmthatsolderingandpowersu
6、pplybetweenterminalareinnormal.Itiseasyforthechipspreviously8bitwhichhasafewpins,butunreasonableforARMcoreof200pinsdegree.Accordinglyitneedstheinterfacewhichishadbuilt-in,JTAG.TheresearchwhichitseeswillplanthesystemappliedforT.C.M.S.(TrainControlandMonitoringSystem)a
7、ndexamineit-itswiring,identificationofchip(arrangementandoperating)-withJTAGandcatchtheerrorinplan.Thisistheprecedingphaseofsystemwhichwillbecompletedinthefuture.II.MAINSUBJECTThejusticeofboundaryscanExamininghardwaretofindoutthecauseofproblem,itisnecessarytosettheco
8、nditionofspecificterminalwithoption.InPCBconditioneachdeviceisalreadyconnectedwiththeotherone,soyoumustcutofftheconnectionofpinsint
