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Preface
SPRUEK5A–October2007
ReadThisFirst
AboutThisManual
ThisdocumentdescribestheDDR2memorycontrollerintheTMS320DM647/DM648DigitalSignal
Processor(DSP).
NotationalConventions
Thisdocumentusesthefollowingconventions.
•Hexadecimalnumbersareshownwiththesuffixh.Forexample,thefollowingnumberis40
hexadecimal(decimal64):40h.
•Registersinthisdocumentareshowninfiguresanddescribedintables.
–Eachregisterfigureshowsarectangledividedintofieldsthatrepresentthefieldsoftheregister.
Eachfieldislabeledwithitsbitname,itsbeginningandendingbitnumbersabove,andits
read/writepropertiesbelow.Alegendexplainsthenotationusedfortheproperties.
–Reservedbitsinaregisterfiguredesignateabitthatisusedforfuturedeviceexpansion.
Note:Acronyms3PSW,CPSW,CPSW_3G,and3pGSwareinterchangeableandallrefertothe3
portgigabitswitch.
RelatedDocumentationFromTexasInstruments
ThefollowingdocumentsdescribetheTMS320DM647/DM648DigitalSignalProcessor(DSP).Copiesof
thesedocumentsareavailableontheInternetatwww.ti.com.Tip:Entertheliteraturenumberinthe
searchboxprovidedatwww.ti.com.
SPRS372—TMS320DM647/DM648DigitalMediaProcessorDataManualdescribesthesignals,
specificationsandelectricalcharacteristicsofthedevice.
SPRU732—TMS320C64x/C64x+DSPCPUandInstructionSetReferenceGuidedescribestheCPU
architecture,pipeline,instructionset,andinterruptsfortheTMS320C64xandTMS320C64x+digital
signalprocessors(DSPs)oftheTMS320C6000DSPfamily.TheC64x/C64x+DSPgeneration
comprisesfixed-pointdevicesintheC6000DSPplatform.TheC64x+DSPisanenhancementof
theC64xDSPwithaddedfunctionalityandanexpandedinstructionset.
SPRUEK5—TMS320DM647/DM648DSPDDR2MemoryControllerUser'sGuidedescribestheDDR2
memorycontrollerintheTMS320DM647/DM648DigitalSignalProcessor(DSP).TheDDR2/mDDR
memorycontrollerisusedtointerfacewithJESD79D-2AstandardcompliantDDR2SDRAM
devicesandstandardMobileDDRSDRAMdevices.
SPRUEK6—TMS320DM647/DM648DSPExternalMemoryInterface(EMIF)User'sGuidedescribes
theoperationoftheasynchronousexternalmemoryinterface(EMIF)intheTMS320DM647/DM648
DigitalSignalProcessor(DSP).TheEMIFsupportsagluelessinterfacetoavarietyofexternal
devices.
SPRUEK7—TMS320DM647/DM648DSPGeneral-PurposeInput/Output(GPIO)User'sGuide
describesthegeneral-purposeinput/output(GPIO)peripheralintheTMS320DM647/DM648Digital
SignalProcessor(DSP).TheGPIOperipheralprovidesdedicatedgeneral-purposepinsthatcanbe
configuredaseitherinputsoroutputs.Whenconfiguredasaninput,youcandetectthestateofthe
inputbyreadingthestateofaninternalregister.Whenconfiguredasanoutput,youcanwritetoan
internalregistertocontrolthestatedrivenontheoutputpin.
6PrefaceSPRUEK5A–October2007
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