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产品 预告(展)
1.2description
TMS320DM6446
digitalmediasystemon-碎片
SPRS283–DECEMBER2005
•
externalmemoryinterfaces(emifs)
•
10/100mb/sethernetmac(emac)
–32-bitddr2sdrammemorycontroller–ieee802.3compliant
with256m-byteaddressspace(1.8-vi/o)
–mediaindependentinterface(mii)
–asynchronous16-bitwideemif(emifa)
•
vlynq™interface(fpgainterface)
with128m-byteaddressreach
•
usbportwithintegrated2.0phy
•
FlashMemoryInterfaces
–usb2.0high-/全部-速(480-mbps)client
•
也不(8-/16-位-widedata)
–usb2.0high-/全部-/低-speedhost
•
与非(8-/16-位-widedata)
(迷你-host,supportingoneexternal
•
FlashCardInterfaces
设备)
–multimediacard(mmc)/securedigital(sd)
•
threepulsewidthmodulator(pwm)输出
–CompactFlashControllerWithTrueIDE
•
在-chiparmrombootloader(rbl)toboot
模式
FromNANDFlashorUART
–SmartMedia
•
ata/atapii/f(ata/atapi-5specification)
•
enhanceddirect-记忆-进入(edma)
•
individualpower-savingmodesforarm/dsp
控制(64independentchannels)
•
FlexiblePLLClockGenerators
•
two64-bitgeneral-purposetimers(各自
•
ieee-1149.1(jtag)boundary-
configurableastwo32-bittimers)
scan-兼容
•
one64-bitwatchdogtimer
•
upto71general-purposei/o(gpio)管脚
•
threeuarts(onewithrtsandctsflow
(multiplexedwithotherdevicefunctions)
控制)
•
361-pinpb-freebgapackage
•
oneserialportinterface(spi)withtwo
(zwtsuffix),0.8-mmballpitch
碎片-选择
•
0.09-µm/6-levelcumetalprocess(cmos)
•
主控/slaveinter-integratedcircuit(i
2
C
•
3.3-vand1.8-vi/o,1.2-vinternal
bus™)
•
产品:
•
audioserialport(asp)
–DigitalMedia
–I2S
–networkedmediaencode/decode
–AC97AudioCodecInterface
–VideoImaging
–standardvoicecodecinterface(aic12)
thetms320dm6446(alsoreferencedasdm6446)leveragesti’sdavincitechnologytomeetthe
networkedmediaencodeanddecodeapplicationprocessingneedsofnext-generationembeddeddevices.
TheDM6446enablesOEMsandODMstoquicklybringtomarketdevicesfeaturingrobustoperating
systemssupport,richuserinterfaces,highprocessingperformance,andlongbatterylifethroughthe
maximumflexibilityofafullyintegratedmixedprocessorsolution.
thedual-corearchitectureofthedm6446providesbenefitsofbothdspandreducedinstructionset
计算机(risc)科技,incorporatingahigh-performancetms320c64x+dspcoreandan
arm926ej-smpucore.
thearm926ej-sisa32-bitriscprocessorcorethatperforms32-bitor16-bitinstructionsand
processes32-位,16-位,or8-bitdata.thecoreusespipeliningsothatallpartsoftheprocessorand
memorysystemcanoperatecontinuously.
thearmcoreincorporates:
•
acoprocessor15(cp15)andprotectionmodule
•
dataandprogrammemorymanagementunits(mmus)withtablelook-asidebuffers.
•
separate16k-byteinstructionand8k-bytedatacaches.botharefour-wayassociativewithvirtual
indexvirtualtag(vivt).
thetms320c64x+™dspsarethehighest-performancefixed-pointdspgenerationinthe
2
digitalmediasystem-在-碎片(dmsoc)
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