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1.2.1devicecompatibility
TMS320DM642
video/imagingfixed-pointdigitalsignalprocessor
SPRS200J–JULY2002–REVISEDAUGUST2005
thevcxointerpolatedcontrol(vic)portprovidesdigital-至-analogconversionwithresolutionfrom9-位
toupto16-位.theoutputofthevicisasinglebitinterpolatedd/aoutput.formoredetailsonthevic
端口,seethe
tms320c64xdspvideoport/vcxointerpolatedcontrol(vic)portreferenceguide
(literaturenumberspru629).
theethernetmediaaccesscontroller(emac)providesanefficientinterfacebetweenthedm642dsp
coreprocessorandthenetwork.thedm642emacsupportboth10base-tand100base-tx,or10
mbits/第二(mbps)and100mbpsineitherhalf-orfull-duplex,withhardwareflowcontrolandqualityof
维护(qos)支持.thedm642emacmakesuseofacustominterfacetothedspcorethatallows
efficientdatatransmissionandreception.formoredetailsontheemac,seethe
TMS320C6000DSP
ethernetmediaaccesscontroller(emac)/managementdatainput/输出(mdio)modulereference
手册
(literaturenumberspru628).
themanagementdatainput/输出(mdio)modulecontinuouslypollsall32mdioaddressesinorderto
enumerateallphydevicesinthesystem.onceaphycandidatehasbeenselectedbythedsp,这
mdiomoduletransparentlymonitorsitslinkstatebyreadingthephystatusregister.linkchangeevents
arestoredinthemdiomoduleandcanoptionallyinterruptthedsp,allowingthedsptopollthelink
statusofthedevicewithoutcontinuouslyperformingcostlymdioaccesses.formoredetailsonthe
mdio,seethe
tms320c6000dspethernetmediaaccesscontroller(emac)/managementdata
输入/输出(mdio)modulereferenceguide
(literaturenumberspru628).
TheI2C0portontheTMS320DM642allowstheDSPtoeasilycontrolperipheraldevicesand
communicatewithahostprocessor.inaddition,thestandardmultichannelbufferedserialport(mcbsp)
maybeusedtocommunicatewithserialperipheralinterface(spi)modeperipheraldevices.
thedm642hasacompletesetofdevelopmenttoolswhichincludes:anewccompiler,anassembly
optimizertosimplifyprogrammingandscheduling,andawindows
®
debuggerinterfaceforvisibilityinto
sourcecodeexecution.
thedm642deviceisacode-compatiblememberofthec6000™dspplatform.
thec64x™dspgenerationofdeviceshasadiverseandpowerfulsetofperipherals.
formoredetailedinformationonthedevicecompatibilityandsimilarities/differencesamongthedm642
andotherc64x™devices,seethe
TMS320DM642TechnicalOverview
(literaturenumberspru615).
tms320dm642video/imagingfixed-pointdigitalsignalprocessor
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