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2Introduction
2.1description
2.2pinassignments
2.2.1terminalassignmentsfortheggupackage
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TMS320VC5409A
fixed-pointdigitalsignalprocessor
SPRS140F–NOVEMBER2000–REVISEDJANUARY2005
thissectionliststhepinassignmentsanddescribesthefunctionofeachpin.thisdatamanualalso
providesadetaileddescriptionsection,electricalspecifications,parametermeasurementinformation,和
mechanicaldataabouttheavailablepackaging.
便条
Thisdatamanualisdesignedtobeusedinconjunctionwiththe
TMS320C54x™DSP
FunctionalOverview
(literaturenumberspru307).
thetms320vc5409afixed-要点,digitalsignalprocessor(dsp)(hereafterreferredtoasthe5409a
unlessotherwisespecified)isbasedonanadvancedmodifiedharvardarchitecturethathasoneprogram
memorybusandthreedatamemorybuses.thisprocessorprovidesanarithmeticlogicunit(alu)witha
highdegreeofparallelism,应用-specifichardwarelogic,在-chipmemory,andadditionalon-碎片
peripherals.thebasisoftheoperationalflexibilityandspeedofthisdspisahighlyspecializedinstruction
设置.
separateprogramanddataspacesallowsimultaneousaccesstoprograminstructionsanddata,供应
ahighdegreeofparallelism.tworeadoperationsandonewriteoperationcanbeperformedinasingle
循环.instructionswithparallelstoreandapplication-specificinstructionscanfullyutilizethisarchitecture.
inaddition,datacanbetransferredbetweendataandprogramspaces.suchparallelismsupportsa
powerfulsetofarithmetic,逻辑,andbit-manipulationoperationsthatcanallbeperformedinasingle
machinecycle.the5409aalsoincludesthecontrolmechanismstomanageinterrupts,重复的
行动,andfunctioncalls.
figure2-1illustratestheballlocationsforthe144-pinballgridarray(bga)packageandisusedin
conjunctionwithtable2-1tolocatesignalnamesandballgridnumbers.figure2-2providesthepin
assignmentsforthe144-pinlow-profilequadflatpack(lqfp)包装.
figure2-1.144-ballggumicrostarbga™(bottomview)
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