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TMS320DM6446
digitalmediasystemon-碎片
SPRS283–DECEMBER2005
theethernetmediaaccesscontroller(emac)providesanefficientinterfacebetweenthedm644xmpu
coreprocessorandthenetwork.thedm6446emacsupportboth10base-tand100base-tx,or10
mbits/第二(mbps)and100mbpsineitherhalf-orfull-duplexmode,withhardwareflowcontroland
qualityofservice(qos)支持.
themanagementdatainput/输出(mdio)modulecontinuouslypollsall32mdioaddressesinorderto
enumerateallphydevicesinthesystem.onceaphycandidatehasbeenselectedbythempu,这
mdiomoduletransparentlymonitorsitslinkstatebyreadingthephystatusregister.linkchangeevents
arestoredinthemdiomoduleandcanoptionallyinterruptthempu,allowingthemputopollthelink
statusofthedevicewithoutcontinuouslyperformingcostlymdioaccesses.
thei2c,spi,usb2.0,andvlynqportsallowdm6446toeasilycontrolperipheraldevicesand/或者
communicatewithhostprocessors.
thedm6446alsoincludesavideo/imagingco-处理器(vicp)tooffloadmanyvideoandimaging
processingtasksfromthedspcore,makingmoredspmipsavailableforcommonvideoandimaging
algorithms.formoreinformationonthevicpenhancedcodecs,suchash.264andmpeg4,请
contactyournearesttisalesrepresentative.
Therichperipheralsetprovidestheabilitytocontrolexternalperipheraldevicesandcommunicatewith
externalprocessors.fordetailsoneachoftheperipherals,seetherelatedsectionslaterinthisdocument
andtheassociatedperipheralreferenceguides.
thedm6446hasacompletesetofdevelopmenttoolsforboththearmanddsp.theseincludec
compilers,adspassemblyoptimizertosimplifyprogrammingandscheduling,andawindows™
debuggerinterfaceforvisibilityintosourcecodeexecution.
digitalmediasystem-在-碎片(dmsoc)
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