MAXVSchematicReviewWorksheetWord文件下载.docx
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Forexample,thereareI/OrelatedVCCIOrequirementsfortheI/Ostandardsusedinthedevice.Ifyoudonothaveacompleteproject,thenataminimumatoplevelprojectshouldbeusedwithallI/Opinsdefined,placed,andapplyalloftheprogrammableoptionsthatyouplantouse.TheI/OAnalysistoolinthePinPlannercanthenbeusedontheminimalprojecttovalidatethepinoutintheQuartusIIsoftwaretoassuretherearenoconflictswiththedevicerulesandguidelines.
WhenusingtheI/OAnalysistoolyoumustensuretherearenoerrorswithyourpinout.Additionally,youshouldcheckallwarningandcriticalwarningmessagestoevaluatetheirimpactonyourdesign.Youcanrightclickyourmouseoveranyerror,warningorcriticalwarningmessageandselect“Help”.ThiswillbringopenanewHelpwindowwithfurtherinformationonthecauseoftheerrororwarning,andtheactionthatisrequired.
Forexample,youcanuseelectromigrationcurrentassignmentstospecifytheDCcurrentdrawonI/Opinsthatdriveresistiveloads,suchaspullupresistorsorLEDs.ThedevicehasDCcurrentdensityrestrictionsthatmustbemetbasedonthepinlocationsusedinthedesign.Thefollowingerrorisgeneratedifthedevicecurrentdensityrestrictionsareviolated:
Error(169007):
CurrentdensitytoohighinI/Obank<
name>
--pinscombinedexceedthelimit(<
number>
.<
mA)by<
mA
Thehelpfileprovidesthefollowing:
CAUSE:
Youmadepinassignmentsinthespecifiedrangeofpads,butsomeofthepinsaretooclosetogether.ThespecifiedI/Obankdrawsacurrentthatexceedsthemaximumbythespecifiedamount.ThedevicecandriveonlyalimitedamountofcurrenttoeachI/Obank.Clickthe+icontodisplaydetailsaboutthespecificpins,type,location,andI/OstandardsusedinthespecifiedI/Obank.
ACTION:
ReassignsomepinstoreducethecurrentdensityorassignsomepinstouseanI/Ostandardwithalowercurrent.TodisplayI/Obanks,opentheChipPlannerandturnonI/ObankdisplayintheLayersSettingsdialogbox.
TherearemanyreportsavailableforuseafterasuccessfulcompilationorI/Oanalysis.Forexample,youcanusethe“AllPackagePins”and“I/OBankUsage”reportswithintheCompilation–Fitter–ResourceSectiontoseealloftheI/OstandardsandI/Oprogrammableoptionsthatareassignedtoallofthepinsinyourdesign,aswellasviewtherequiredVCCIOforeachI/Obank.Thesereportsmustmatchyourschematicpinconnections.
Thereviewtablehasthefollowingheading:
Plane/Signal
SchematicName
ConnectionGuidelines
Comments/Issues
Thefirstcolumn(Plane/Signal)liststhedevicevoltageorsignalpinname.Youshouldonlyeditthiscolumntoremovededicatedordualpurposepinnamesthatarenotavailableforyourdevicedensityandpackageoption.
Thesecondcolumn(SchematicName)isforyoutoenteryourschematicname(s)forthesignal(s)orplaneconnectedtothedevicepin(s).
Thethirdcolumn(ConnectionGuidelines)shouldbeconsidered“readonly”asthiscontainsAltera’srecommendedconnectionguidelinesforthevoltageplaneorsignal.
Thefourthcolumn(Comments/Issues)isanareaprovidedasa“notepad”foryoutocommentonanydeviationsfromtheconnectionguidelines,andtoverifyguidelinesaremet.Inmanycasestherearenotesthatprovidefurtherinformationanddetailthatcomplimenttheconnectionguidelines.
Hereisanexampleofhowtheworksheetcanbeused:
<
Plane/SignalnameprovidedbyAltera>
VCCINT
userenteredtext>
+1.8V
DeviceSpecificGuidelinesprovidedbyAltera>
Connectedto+1.8Vplane,noisolationisnecessary.
Missinglowandmediumrangedecoupling,checkPDN.
SeeNotes(1-1)(1-2).
LegalNote:
PLEASEREVIEWTHEFOLLOWINGTERMSANDCONDITIONSCAREFULLYBEFOREUSINGTHISSCHEMATICREVIEWWORKSHEET(“WORKSHEET”)PROVIDEDTOYOU.BYUSINGTHISWORKSHEET,YOUINDICATEYOURACCEPTANCEOFSUCHTERMSANDCONDITIONS,WHICHCONSTITUTETHELICENSEAGREEMENT("
AGREEMENT"
)BETWEENYOUANDALTERACORPORATIONORITSAPPLICABLESUBSIDIARIES("
ALTERA"
).
1.SubjecttothetermsandconditionsofthisAgreement,Alteragrantstoyou,fornoadditionalfee,anon-exclusiveandnon-transferablerighttousethisWorksheetforthesolepurposeofverifyingthevalidityofthepinconnectionsofanAlteraprogrammablelogicdevice-baseddesign.YoumaynotusethisWorksheetforanyotherpurpose.TherearenoimpliedlicensesgrantedunderthisAgreement,andallrights,exceptforthosegrantedunderthisAgreement,remainwithAltera.
2.Alteradoesnotguaranteeorimplythereliability,orserviceability,ofthisWorksheetorotheritemsprovidedaspartofthisWorksheet.ThisWorksheetisprovided'
ASIS'
.ALTERADISCLAIMSALLWARRANTIES,EXPRESSORIMPLIED,INCLUDINGTHEIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE,ANDNON-INFRINGEMENT.ALTERAHASNOOBLIGATIONTOPROVIDEYOUWITHANYSUPPORTORMAINTENANCE.
3.InnoeventshalltheaggregateliabilityofAlterarelatingtothisAgreementorthesubjectmatterhereofunderanylegaltheory(whetherintort,contract,orotherwise),exceedOneHundredUS
Dollars(US$100.00).InnoeventshallAlterabeliableforanylostrevenue,lostprofits,orotherconsequential,indirect,orspecialdamagescausedbyyouruseofthisWorksheetevenifadvisedofthepossibilityofsuchdamages.
4.ThisAgreementmaybeterminatedbyeitherpartyforanyreasonatanytimeupon30-days’priorwrittennotice.ThisAgreementshallbegovernedbythelawsoftheStateofCalifornia,withoutregardtoconflictoflaworchoiceoflawprinciples.YouagreetosubmittotheexclusivejurisdictionofthecourtsintheCountyofSantaClara,StateofCaliforniafortheresolutionofanydisputeorclaimarisingoutoforrelatingtothisAgreement.Thepartiesherebyagreethatthepartywhoisnotthesubstantiallyprevailingpartywithrespecttoadispute,claim,orcontroversyrelatingtothisAgreementshallpaythecostsactuallyincurredbythesubstantiallyprevailingpartyinrelationtosuchdispute,claim,orcontroversy,includingattorneys'
fees.FailuretoenforceanytermorconditionofthisAgreementshallnotbedeemedawaiveroftherighttolaterenforcesuchtermorconditionoranyothertermorconditionoftheAgreement.
BYUSINGTHISWORKSHEET,YOUACKNOWLEDGETHATYOUHAVEREADTHISAGREEMENT,UNDERSTANDIT,ANDAGREETOBEBOUNDBYITSTERMSANDCONDITIONS.YOUANDALTERAFURTHERAGREETHATITISTHECOMPLETEANDEXCLUSIVESTATEMENTOFTHEAGREEMENTBETWEENYOUANDALTERA,WHICHSUPERSEDESANYPROPOSALORPRIORAGREEMENT,ORALORWRITTEN,ANDANYOTHERCOMMUNICATIONSBETWEENYOUANDALTERARELATINGTOTHESUBJECTMATTEROFTHISAGREEMENT.
Index
SectionI:
Power
SectionII:
Programming
SectionIII:
I/O
SectionIV:
DocumentRevisionHistory
Power
Literature:
MAXVDevices
MAXVDevicePinOutFiles
MAXVDeviceFamilyPinConnectionGuidelines(PDF)
PowerSupplyIntegritySupportPage(Generaldecouplingguidelines)
PowerDeliveryNetwork(PDN)Tool
PowerDeliveryNetwork(PDN)ToolUserGuide(PDF)
EarlyPowerEstimator
PowerPlayPowerAnalyzerSupportResources
AlteraBoardDesignResourceCenter(Generalboarddesignguidelines,PDNdesign,isolation,tools,andmore)
ConnectionGuidelines
VCCINT
AllVCCINTpinsrequirea1.8Vsupply.
Decouplingforthesepinsdependsonthedesigndecouplingrequirementsofthespecificboard.
VerifyGuidelineshavebeenmetorlistrequiredactionsforcompliance.
VCCIO[1..4]
Supportedvoltagesare1.2V,1.5V,1.8V,2.5V,and3.3V.
NoteVCCIO1doesnotsupport1.2V
IndexTopofSection
GND
GroundpinsfortheI/Obanksandinternalsupply.AllGNDpinsmustbeconnectedtotheboardGNDplane.
GNDpinsinthe5M1270Zand5M2210ZdevicesconsistofGNDIOandGNDINTpins.
Notes:
1-1.Thisworksheetdoesnotcalculaterequireddecoupling,itisexpectedthedesignerwillselectdecouplingbasedonanalysisofpowerrequired