arm_jtag

ARMDAI0072AOpenAccessMulti-ICESystemDesignConsiderationsApplicationNote72ii©CopyrightARMLimited1998.Allrightsreserved.ARMDAI0072AOpenAccessApplicationNote72Multi-ICESystemDesignConsiderations©CopyrightARMLimited1998.Allrightsreserved.ReleaseinformationProprietarynoticeARMisaregisteredtrademarkofARMLimited.Multi-ICE,EmbeddedICE,andTrackingICEarethetrademarksofARMLimited.ConfidentialitystatusThisdocumentisOpenAccess(norestrictionondistribution).ProductstatusTheinformationinthisdocumentisFinal(informationonadevelopedproduct).Webaddress©CopyrightARMLimited1998.Allrightsreserved.iiiOpenAccessPrefaceiv©CopyrightARMLimited1998.Allrightsreserved.ARMDAI0072AOpenAccessAboutthisdocumentThisdocumentisintendedtohelpengineerswhoaredesigningARM-basedASICsandPCBstodesignsystemsthatcanbedebuggedusingMulti-ICE.IntendedaudienceThisdocumenthasbeenwrittenforexperiencedhardwareengineers.TypographicalconventionsThefollowingtypographicalconventionsareusedinthisdocument:boldhighlightssignalnameswithintext.italichighlightsARM-specificterminology,crossreferencesandreferencestootherpublications.typewriteridentifiesfileandprogramnames,sourcecode,andtext(suchascommands)thatmaybeenteredatthekeyboard.typewriteritalicidentifiesargumentstocommandsorfunctionswhichshouldbereplacedbyaspecificvalue.ARMDAI0072A©CopyrightARMLimited1998.Allrightsreserved.vOpenAccessRelatedpublicationsTheMulti-ICEUserGuide(ARMDUI0048)describeshowtouseMulti-ICEandtheMulti-ICEDebuggerforWindows(MDW),anddocumentstheTAPOpinterfaceforthird-partydebuggers.ApplicationNote31,UsingEmbeddedICE(ARMDAI0031),discussessomeofthedebuggerissuesfromasoftwarestandpoint.ThiscanbedownloadedfromtheDocumentationsectionoftheARMwebsite.ApplicationNote41,TrackingICE(ARMDAI0041),describesTrackingICE.ThiscanbedownloadedfromtheDocumentationsectionoftheARMwebsite.vi©CopyrightARMLimited1998.Allrightsreserved.ARMDAI0072AOpenAccessFurtherreadingIEEEStandardTestAccessPortandBoundaryScanArchitecture(IEEEStd1149.1)describestheJTAGportswithwhichMulti-ICEcommunicates.ARMDAI0072A©CopyrightARMLimited1998.Allrightsreserved.viiOpenAccessFeedbackonthismanualIfyouhaveanycommentsorsuggestionsaboutthisdocument,[e-mail]:•thedocumenttitle•thedocumentnumber•thepagenumber(s)towhichyourcommentsrefer•aconciseexplanationofyourcomments.viii©CopyrightARMLimited1998.Allrightsreserved.ARMDAI0072AOpenAccessFeedbackonthisproductIfyouhaveanycommentsorsuggestionsaboutthisproduct,pleasecontactyoursuppliergiving:•theproductname•aconciseexplanationofyourcomments.ARMDAI0072A©CopyrightARMLimited1998.Allrightsreserved.ixOpenAccessContentsMulti-ICESystemDesignConsiderationsApplicationNote72PrefaceAboutthisdocument......................................................................................................ivRelatedpublications.......................................................................................................vFurtherreading...............................................................................................................viFeedbackonthismanual..............................................................................................viiFeedbackonthisproduct.............................................................................................viiiChapter1Introduction1.1Overview.......................................................................................................1-21.2Multi-ICE.......................................................................................................1-3Chapter2SystemDesign2.1MixingARMcoreswithotherdevices...........................................................2-22.2UsingadaptiveclockingtosynchronizetheJTAGport.................................2-32.3Resetsignals................................................................................................2-6Chapter3ASICGuidelines3.1ASICscontainingmultipledevices................................................................3-2Chapter4PCBGuidelines4.1Multi-ICEJTAGheaderconnector................................................................4-24.2PCBconnections....................................