<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE twReport [<!ELEMENT twReport (twHead, (twWarn | twDebug | twInfo)*, twBody, twSum?, twFoot, twClientInfo?)><!ELEMENT twHead (twExecVer?, twCopyright, twCmdLine?, twDesign?, twPCF?, twDevInfo, twRptInfo, twEnvVar*)><!ELEMENT twExecVer (#PCDATA)><!ELEMENT twCopyright (#PCDATA)><!ELEMENT twCmdLine (#PCDATA)><!ELEMENT twDesign (#PCDATA)><!ELEMENT twPCF (#PCDATA)><!ELEMENT twDevInfo (twDevName, twSpeedGrade, twSpeedVer?)><!ELEMENT twDevName (#PCDATA)><!ATTLIST twDevInfo arch CDATA #IMPLIED><!ELEMENT twSpeedGrade (#PCDATA)><!ELEMENT twSpeedVer (#PCDATA)><!ELEMENT twRptInfo (twItemLimit?, (twUnconst, twUnconstLimit?)?)><!ATTLIST twRptInfo twRptLvl (twErr | twVerbose | twTerseErr | twSum | twTimeGrp) #REQUIRED><!ATTLIST twRptInfo twAdvRpt  (TRUE | FALSE) "FALSE"><!ATTLIST twRptInfo twTimeUnits (twPsec | twNsec | twUsec | twMsec | twSec) "twNsec"><!ATTLIST twRptInfo twFreqUnits (twGHz | twMHz | twHz) "twMHz"><!ELEMENT twItemLimit (#PCDATA)><!ELEMENT twUnconst EMPTY><!ELEMENT twUnconstLimit (#PCDATA)><!ELEMENT twEnvVar EMPTY><!ATTLIST twEnvVar name CDATA #REQUIRED><!ATTLIST twEnvVar description CDATA #REQUIRED><!ELEMENT twWarn (#PCDATA)><!ELEMENT twInfo (#PCDATA)><!ELEMENT twDebug (#PCDATA)><!ELEMENT twBody (twDerating?, (twSumRpt | twVerboseRpt | twErrRpt | twTerseErrRpt | twTimeGrpRpt), twNonDedClks?)><!ATTLIST twBody twFastPaths CDATA #IMPLIED><!ELEMENT twDerating (twProc?, twTemp?, twVolt?)><!ELEMENT twProc (#PCDATA)><!ELEMENT twTemp (#PCDATA)><!ELEMENT twVolt (#PCDATA)><!ELEMENT twSumRpt (twConstList?, twUnmetConstCnt?, twDebug*, twDataSheet?, twClkTbl?)><!ELEMENT twErrRpt (twCycles?, (twConst | twTIG)*, twUnmetConstCnt?, twDataSheet?, twClkTbl?, twTimeGrp*)><!ELEMENT twTerseErrRpt (twConstList, twUnmetConstCnt?, twDataSheet?, twClkTbl?)><!ELEMENT twVerboseRpt (twCycles?, (twConst | twTIG)*, twUnmetConstCnt?, twDataSheet?, twClkTbl?, twTimeGrp*)><!ELEMENT twCycles (twSigConn+)><!ATTLIST twCycles twNum CDATA #REQUIRED><!ELEMENT twSigConn (twSig, twDriver, twLoad)><!ELEMENT twSig (#PCDATA)><!ELEMENT twDriver (#PCDATA)><!ELEMENT twLoad (#PCDATA)> <!ELEMENT twConst (twConstHead, ((twPathRpt*, twPathRptBanner, twPathRpt*) |  (twPathRpt*, twRacePathRpt?) |  (twNetRpt*)))><!ATTLIST twConst twConstType (twPathConst | twNetConst) "twPathConst"><!ELEMENT twConstHead (twConstName, twItemCnt, twErrCntSetup, twErrCntHold, twMinPer?, twMaxDel?, twMaxFreq?, twMaxNetDel?, twMaxNetSkew?, twMinOff?, twMaxOff?)><!ELEMENT twConstName (#PCDATA)><!ELEMENT twItemCnt (#PCDATA)><!ELEMENT twErrCnt (#PCDATA)><!ELEMENT twErrCntSetup (#PCDATA)><!ELEMENT twErrCntHold (#PCDATA)><!ATTLIST twErrCntHold twRaceChecked (TRUE | FALSE) "FALSE"><!ELEMENT twMinPer (#PCDATA) ><!ELEMENT twFootnote EMPTY><!ATTLIST twFootnote number CDATA #REQUIRED><!ELEMENT twMaxDel (#PCDATA)><!ELEMENT twMaxFreq (#PCDATA)><!ELEMENT twMinOff (#PCDATA)><!ELEMENT twMaxOff (#PCDATA)><!ELEMENT twTIG (twTIGHead, (twPathRpt*,twRacePathRpt?))><!ELEMENT twTIGHead (twTIGName, twInstantiated, twBlocked)><!ELEMENT twTIGName (#PCDATA)><!ELEMENT twInstantiated (#PCDATA)><!ELEMENT twBlocked (#PCDATA)><!ELEMENT twRacePathRpt (twRacePath+)><!ELEMENT twPathRpt (twUnconstPath | twConstPath | twUnconstOffIn | twConstOffIn | twUnconstOffOut | twConstOffOut | twModOffOut)><!ELEMENT twUnconstPath (twTotDel, twSrc, twDest,  (twDel, twSUTime)?, twTotPathDel?, twClkSkew?, tw2Phase?, twClkUncert?, twDetPath?)><!ELEMENT twTotDel (#PCDATA)><!ELEMENT twSrc (#PCDATA)><!ATTLIST twSrc BELType CDATA #IMPLIED><!ELEMENT twDest (#PCDATA)><!ATTLIST twDest BELType CDATA #IMPLIED><!ELEMENT twDel (#PCDATA)><!ELEMENT twSUTime (#PCDATA)><!ELEMENT twTotPathDel (#PCDATA)><!ELEMENT twClkSkew (#PCDATA)><!ELEMENT twClkSkew (#PCDATA)><!ELEMENT twConstPath (twSlack, twSrc, twDest, twTotPathDel?, twClkSkew?, twDelConst, tw2Phase?, twClkUncert?, twDetPath?)><!ATTLIST twConstPath twDataPathType CDATA "twDataPathMaxDelay"><!ATTLIST twConstPath constType (period | fromto | unknown) "unknown"><!ELEMENT twSlack (#PCDATA)><!ELEMENT twDelConst (#PCDATA)><!ELEMENT tw2Phase EMPTY><!ELEMENT twRacePath (twSlack, twSrc, twDest, twClkSkew, twDelConst?, twClkUncert?, twDetPath)><!ELEMENT twPathRptBanner (#PCDATA)><!ELEMENT twUnconstOffIn (twOff, twSrc, twDest, twGuaranteed?, twClkUncert?, (twDataPath, twClkPath)?)><!ELEMENT twOff (#PCDATA)><!ELEMENT twGuaranteed EMPTY><!ELEMENT twConstOffIn (twSlack, twSrc, twDest, ((twClkDel, twClkSrc, twClkDest) | twGuarInSetup), twOff, twOffSrc, twOffDest, twClkUncert?, (twDataPath, twClkPath)?)><!ATTLIST twConstOffIn twDataPathType CDATA "twDataPathMaxDelay"><!ATTLIST twConstOffIn twDurationNotSpecified CDATA #IMPLIED><!ELEMENT twClkDel (#PCDATA)><!ELEMENT twClkSrc (#PCDATA)><!ELEMENT twClkDest (#PCDATA)><!ELEMENT twGuarInSetup (#PCDATA)><!ELEMENT twOffSrc (#PCDATA)><!ELEMENT twOffDest (#PCDATA)><!ELEMENT twUnconstOffOut (twOff, twSrc, twDest, twClkUncert?, (twClkPath, twDataPath)?)><!ELEMENT twConstOffOut (twSlack, twSrc, twDest, twClkDel, twClkSrc, twClkDest, twDataDel, twDataSrc, twDataDest, twOff, twOffSrc, twOffDest, twClkUncert?, (twClkPath, twDataPath)?)><!ATTLIST twConstOffOut twDataPathType CDATA "twDataPathMaxDelay"><!ELEMENT twDataDel (#PCDATA)><!ELEMENT twDataSrc (#PCDATA)><!ELEMENT twDataDest (#PCDATA)><!ELEMENT twModOffOut (twSlack, twDest, twDataDel, twDataSrc, twDataDest, twClkUncert?, twDataPath?)><!ELEMENT twDetPath (twSrc, twDest, twLogLvls, twSrcSite, twSrcClk?, twPathDel*, (twLogDel, twRouteDel, twTotDel)?, twDestClk?, (twPctLog, twPctRoute)?)><!ATTLIST twDetPath maxSiteLen CDATA #IMPLIED><!ELEMENT twDataPath (twSrc, twDest, twLogLvls, twSrcSite, twSrcClk?, twPathDel*, (twLogDel, twRouteDel, twTotDel)?, twDestClk?, (twPctLog, twPctRoute)?)><!ATTLIST twDataPath maxSiteLen CDATA #IMPLIED><!ELEMENT twClkPath (twSrc, twDest, twLogLvls, twSrcSite, twSrcClk?, twPathDel*, (twLogDel, twRouteDel, twTotDel)?, twDestClk?, (twPctLog, twPctRoute)?)><!ATTLIST twClkPath maxSiteLen CDATA #IMPLIED><!ELEMENT twLogLvls (#PCDATA)><!ELEMENT twSrcSite (#PCDATA)><!ELEMENT twSrcClk (#PCDATA)><!ATTLIST twSrcClk twEdge (twRising | twFalling) "twRising"><!ATTLIST twSrcClk twArriveTime CDATA #IMPLIED><!ATTLIST twSrcClk twClkRes CDATA #IMPLIED><!ELEMENT twPathDel (twSite, twDelType, twFanCnt?, twDelInfo?, twComp, twNet?, twBEL*)><!ATTLIST twPathDel twHoldTime (TRUE | FALSE) "FALSE"><!ELEMENT twDelInfo (#PCDATA)><!ATTLIST twDelInfo twEdge (twRising | twFalling | twIndet) #REQUIRED><!ATTLIST twDelInfo twAcc (twRouted | twEst | twApprox) "twRouted"><!ELEMENT twSite (#PCDATA)><!ELEMENT twDelType (#PCDATA)><!ELEMENT twFanCnt (#PCDATA)><!ELEMENT twComp (#PCDATA)><!ELEMENT twNet (#PCDATA)><!ELEMENT twBEL (#PCDATA)><!ELEMENT twLogDel (#PCDATA)><!ELEMENT twRouteDel (#PCDATA)><!ELEMENT twDestClk (#PCDATA)><!ATTLIST twDestClk twEdge (twRising | twFalling) "twRising"><!ATTLIST twDestClk twArriveTime CDATA #IMPLIED><!ATTLIST twDestClk twClkRes CDATA #IMPLIED><!ELEMENT twPctLog (#PCDATA)><!ELEMENT twPctRoute (#PCDATA)><!ELEMENT twNetRpt (twDelNet | twSlackNet | twSkewNet)><!ELEMENT twDelNet (twDel, twNet, twDetNet?)><!ELEMENT twSlackNet (twSlack, twNet, twDel, twNotMet?, twTimeConst, twAbsSlack, twDetNet?)><!ELEMENT twTimeConst (#PCDATA)><!ELEMENT twAbsSlack (#PCDATA)><!ELEMENT twSkewNet (twSlack, twNet, twSkew, twNotMet?, twTimeConst, twAbsSlack, twDetSkewNet?)><!ELEMENT twSkew (#PCDATA)><!ELEMENT twDetNet (twNetDel*)><!ELEMENT twNetDel (twSrc, twDest, twNetDelInfo)><!ELEMENT twNetDelInfo (#PCDATA)><!ATTLIST twNetDelInfo twAcc (twRouted | twEst | twApprox) "twRouted"><!ELEMENT twDetSkewNet (twNetSkew*)><!ELEMENT twNetSkew (twSrc, twDest, twNetDelInfo, twSkew)><!ELEMENT twConstList (twConstListItem)*><!ELEMENT twConstListItem (twConstName, twNotMet?, twReqVal?, twActVal?, twLogLvls?)> <!ATTLIST twConstListItem twUnits (twTime | twFreq) "twTime"><!ELEMENT twNotMet EMPTY><!ELEMENT twReqVal (#PCDATA)><!ELEMENT twActVal (#PCDATA)><!ELEMENT twTimeGrp (twTimeGrpName, twCompList?, twBELList?, twMacList?, twBlockList?, twSigList?, twPinList?)><!ELEMENT twTimeGrpName (#PCDATA)><!ELEMENT twCompList (twCompName+)><!ELEMENT twCompName (#PCDATA)><!ELEMENT twSigList (twSigName+)><!ELEMENT twSigName (#PCDATA)><!ELEMENT twBELList (twBELName+)><!ELEMENT twBELName (#PCDATA)><!ELEMENT twBlockList (twBlockName+)><!ELEMENT twBlockName (#PCDATA)><!ELEMENT twMacList (twMacName+)><!ELEMENT twMacName (#PCDATA)><!ELEMENT twPinList (twPinName+)><!ELEMENT twPinName (#PCDATA)><!ELEMENT twUnmetConstCnt (#PCDATA)><!ELEMENT twDataSheet (twSUH2ClkList*, (twClk2PadList|twClk2OutList)*, twClk2SUList*, twPad2PadList?)><!ATTLIST twDataSheet twNameLen CDATA #REQUIRED><!ELEMENT twSUH2ClkList (twDest, twSUH2Clk+)><!ATTLIST twSUH2ClkList twDestWidth CDATA #IMPLIED><!ATTLIST twSUH2ClkList twPhaseWidth CDATA #IMPLIED><!ELEMENT twSUH2Clk (twSrc, twSUHTime, twSUHTime?)><!ELEMENT twSUHTime (twSU2ClkTime?,twH2ClkTime?)><!ATTLIST twSUHTime twInternalClk CDATA #IMPLIED><!ATTLIST twSUHTime twClkPhase CDATA #IMPLIED><!ELEMENT twSU2ClkTime (#PCDATA)><!ATTLIST twSU2ClkTime twEdge (twRising | twFalling | twIndet) #REQUIRED><!ELEMENT twH2ClkTime (#PCDATA)><!ATTLIST twH2ClkTime twEdge (twRising | twFalling | twIndet) #REQUIRED><!ELEMENT twClk2PadList (twSrc, twClk2Pad+)><!ELEMENT twClk2Pad (twDest, twTime)><!ELEMENT twTime (#PCDATA)><!ATTLIST twTime twEdge (twRising | twFalling | twIndet) #REQUIRED><!ELEMENT twClk2OutList (twSrc, twClk2Out+)><!ATTLIST twClk2OutList twDestWidth CDATA #REQUIRED><!ATTLIST twClk2OutList twPhaseWidth CDATA #REQUIRED><!ELEMENT twClk2Out EMPTY><!ATTLIST twClk2Out twOutPad CDATA #REQUIRED><!ATTLIST twClk2Out twMinTime CDATA #REQUIRED><!ATTLIST twClk2Out twMinEdge CDATA #REQUIRED><!ATTLIST twClk2Out twMaxTime CDATA #REQUIRED><!ATTLIST twClk2Out twMaxEdge CDATA #REQUIRED><!ATTLIST twClk2Out twInternalClk CDATA #REQUIRED><!ATTLIST twClk2Out twClkPhase CDATA #REQUIRED><!ELEMENT twClk2SUList (twDest, twClk2SU+)><!ATTLIST twClk2SUList twDestWidth CDATA #IMPLIED><!ELEMENT twClk2SU (twSrc, twRiseRise?, twFallRise?, twRiseFall?, twFallFall?)><!ELEMENT twRiseRise (#PCDATA)><!ELEMENT twFallRise (#PCDATA)><!ELEMENT twRiseFall (#PCDATA)><!ELEMENT twFallFall (#PCDATA)><!ELEMENT twPad2PadList (twPad2Pad+)><!ATTLIST twPad2PadList twSrcWidth CDATA #IMPLIED><!ATTLIST twPad2PadList twDestWidth CDATA #IMPLIED><!ELEMENT twPad2Pad (twSrc, twDest, twDel)><!ELEMENT twNonDedClks ((twWarn | twInfo), twNonDedClk+)><!ELEMENT twNonDedClk (#PCDATA)><!ELEMENT twSum ( twErrCnt, twScore, twConstCov, twStats)><!ELEMENT twScore (#PCDATA)><!ELEMENT twConstCov (twPathCnt, twNetCnt, twConnCnt, twPct?)><!ELEMENT twPathCnt (#PCDATA)><!ELEMENT twNetCnt (#PCDATA)><!ELEMENT twConnCnt (#PCDATA)><!ELEMENT twPct (#PCDATA)><!ELEMENT twStats ( twMinPer?, twFootnote?, twMaxFreq?, twMaxCombDel?, twMaxFromToDel?, twMaxNetDel?, twMaxNetSkew?, twMaxInAfterClk?, twMinInBeforeClk?, twMaxOutBeforeClk?, twMinOutAfterClk?, (twInfo | twWarn)*)><!ELEMENT twMaxCombDel (#PCDATA)><!ELEMENT twMaxFromToDel (#PCDATA)><!ELEMENT twMaxNetDel (#PCDATA)><!ELEMENT twMaxNetSkew (#PCDATA)><!ELEMENT twMaxInAfterClk (#PCDATA)><!ELEMENT twMinInBeforeClk (#PCDATA)><!ELEMENT twMaxOutBeforeClk (#PCDATA)><!ELEMENT twMinOutAfterClk (#PCDATA)><!ELEMENT twFoot (twFootnoteExplanation*, twTimestamp)><!ELEMENT twTimestamp (#PCDATA)><!ELEMENT twFootnoteExplanation EMPTY><!ATTLIST twFootnoteExplanation number CDATA #REQUIRED><!ATTLIST twFootnoteExplanation text CDATA #REQUIRED><!ELEMENT twClientInfo (twClientName, twAttrList?)><!ELEMENT twClientName (#PCDATA)><!ELEMENT twAttrList (twAttrListItem)*><!ELEMENT twAttrListItem (twName, twValue*)><!ELEMENT twName (#PCDATA)><!ELEMENT twValue (#PCDATA)>]><twReport><twHead><twExecVer>Release 7.1i Trace H.38</twExecVer><twCopyright>Copyright (c) 1995-2005 Xilinx, Inc.  All rights reserved.</twCopyright><twCmdLine>C:/Xilinx/bin/nt/trce.exe -ised:\parttime\for book\例子\典型實(shí)例3.12 ps2接口控制\project\project.ise-intstyle ise -e 3 -l 3 -s 4 -xml top top.ncd -o top.twr top.pcf</twCmdLine><twDesign>top.ncd</twDesign><twPCF>top.pcf</twPCF><twDevInfo arch="spartan3"><twDevName>xc3s400</twDevName><twSpeedGrade>-4</twSpeedGrade><twSpeedVer>PRODUCTION 1.35 2005-01-22</twSpeedVer></twDevInfo><twRptInfo twRptLvl="twErr"></twRptInfo><twEnvVar name="NONE" description="No environment variables were set" /></twHead><twInfo>INFO:Timing:2698 - No timing constraints found, doing default enumeration.</twInfo><twInfo>INFO:Timing:2752 - To get complete path coverage, use the unconstrained paths option. All paths that are not constrained will be reported in the unconstrained paths section(s) of the report.</twInfo><twBody><twErrRpt><twDataSheet twNameLen="15"><twSUH2ClkList twDestWidth = "3" twPhaseWidth = "9"><twDest>clk</twDest><twSUH2Clk ><twSrc>rst</twSrc><twSUHTime twInternalClk ="clk_BUFGP" twClkPhase ="0.000" ><twSU2ClkTime twEdge="twRising">4.208</twSU2ClkTime><twH2ClkTime twEdge="twRising">-1.861</twH2ClkTime></twSUHTime></twSUH2Clk></twSUH2ClkList><twClk2SUList twDestWidth = "3"><twDest>clk</twDest><twClk2SU><twSrc>clk</twSrc><twRiseRise>4.836</twRiseRise></twClk2SU></twClk2SUList></twDataSheet></twErrRpt></twBody><twFoot><twTimestamp>Thu May 29 23:59:00 2008</twTimestamp></twFoot><twClientInfo><twClientName>Trace</twClientName><twAttrList><twAttrListItem><twName>Trace Settings</twName><twValue>Peak Memory Usage: 88 MB</twValue></twAttrListItem></twAttrList></twClientInfo></twReport>