ug_intro_to_megafunctions(5)

UG-01056-3.0May2013

ConnectingMegafunctions5

qmegawizq(forGUIonly)

2.SpecifyCreate,Edit,orCopyamegafunction.

3.InWhichdevicefamilywillyoubeusing?selectyourtargetdevicefamily.

OnlymegafunctionsavailableforthetargetdeviceareavailableinWhichmegafunctionwouldyouliketocustomize?Unsupportedmegafunctionsaregrayedout.

4.Specifythenameandfileformatoftheoutputfile.ClickNext

5.Parameterizethemegafunctionbyspecifyingoptionsinthewizard.ClickNext.6.IfthewizardincludesEDAandSummarytabs,followthesesteps:

Somethird-partysynthesistoolscanuseagreyboxnetlistthatcontainsthestructureofanIPcorewithoutdetailedlogictooptimizetimingandperformanceofthedesigncontainingit.Tousethisfeature,turnonGenerateNetlisttogenerateanetlistfileforareaandtimingestimationinsteadofawrapperfile.

OntheSummarytab,selectthefilesyouwanttogenerate.Agraycheckmarkindicatesafilethatisautomaticallygenerated.Allotherfilesareoptional.ThisstepinstantiatesthemegafunctionintoyourHDLcodeandcreatesawrapperfile.7.ClickFinish.Themegafunctionvariationisgeneratedalongwiththefilesyouspecify.

8.Toviewthemegafunctionschematic,openthegeneratedblocksymbolfile(.bsf)locatedinyourprojectdirectory.ThemegafunctionblocksymbolappearsintheSymbolwindow.

Youcaneditmegafunctionsatanytime.MegafunctionsdefinedinyourprojectappearintheProjectNavigator.Toeditamegafunction,double-clickthemegafunctionfileintheProjectNavigatororBlockEditortodisplaytheMegaWizardGUI.Figure1:ExampleParameterizedGlobalClockControl

Module

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YoucaneasilyvisualizeandconnectmegafunctionstootherelementsofyourdesignwiththeQuartusIIBlockEditor.Youcanmakeconnectionsbydrawingnode(wire),bus,andconduitconnectionsbetweenblocksrepresentingmegafunctionsandprimitivesintheschematic.IftheI/Osignalnamesinoneblockmatchthoseinanotherconnectedblock,theQuartusIIsoftwareautomaticallyconnectscommonI/O's

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AlteraCorporation