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1、《EDA技术》习题5习题5-1归纳利用QuartusII进行VHDL文本输入设计的流程:从文件输入一直到SignalTapII测试。P95~P115答:1建立工作库文件夹和编辑设计文件;2创建工程;3编译前设置;4全程编译;5时序仿真;6引脚锁定;7配置文件下载;8打开SignalTapII编辑窗口;9调入SignalTapII的待测信号;10SignalTapII参数设置;11SignalTapII参数设置文件存盘;12带有SignalTapII测试信息的编译下载;13启动SignalTapII进行采样与分析;14SignalTapII的其他设置和控制方法。5-2由图5-40和图5-41,详
2、细说明工程设计CNT10的硬件工作情况。P114~P115答:图5-40给出工程设计CNT10的十进制计数工作情况;当计数CQ或CQI到9时,计数进位COUT输出正脉冲。图5-41给出工程设计CNT10的十进制计数和内部计数节点CQI计数线性递增的信号波形的工作情况。5-3如何为设计中的SignalTapII加入独立采样时钟?试给出完整的程序和对它的实测结果。P115答:为SignalTapII提供独立时钟的方法是在顶层文件的实体中增加一个时钟输入端口,如语句:LOGC_CLK:INSTD_LOGIC;在此实体中不必对其功能和连接具体定义,而在SignalTapII的参数设置中则可以选择LOG
3、C_CLK为采样时钟。5-4参考QuartusII的Help,详细说明Assignments菜单中Settings对话框的功能。(1)说明其中的TimingRequirements&Qptions的功能、他用方法和检测途经。SpecifyingTimingRequirementsandOptions(ClassicTimingAnalyzer)YoucanspecifytimingrequirementsforClassictiminganalysisthathelpyouachievethedesiredspeedperformanceandothertimingcharacteristic
4、sfortheentireproject,forspecificdesignentities,orforindividualclocks,nodes,andpins.Whenyouspecifyeitherproject-wideorindividualtimingrequirements,theFitteroptimizestheplacementoflogicinthedeviceinordertomeetyourtiminggoals.YoucanusetheTimingwizardortheTimingAnalysisSettingscommandtoeasilyspecifyallp
5、roject-widetimingrequirements,oryoucanusetheAssignmentEditortoassignindividualclockorI/Otimingrequirementstospecificentities,nodes,andpins,ortoallvalidnodesincludedinawildcardorassignmentgroupassignment.Tospecifyproject-widetimingrequirements:1.OntheAssignmentsmenu,clickSettings.2.IntheCategorylist,
6、selectTimingAnalysisSettings.3.Tospecifyproject-widetSU,tH,tCO,and/ortPDtimingrequirements,specifyvaluesunderDelayrequirements.4.Tospecifyproject-wideminimumdelayrequirements,specifyoptionsunderMinimumdelayrequirements.1.UnderClockSettings,selectDefaultrequiredfmax.2.IntheDefaultrequiredfmaxbox,type
7、thevalueoftherequiredfMAXandselectatimeunitfromthelist.3.Ifyouwanttospecifyoptionsforcuttingorreportingcertaintypesoftimingpathsglobally,enablingrecovery/removalanalysis,enablingclocklatency,andreport