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4.9DualDataMovementAccelerator(dMAX)
4.9.1dMAXDevice-SpecificInformation
TMS320C6727,TMS320C6726,TMS320C6722
Floating-PointDigitalSignalProcessors
SPRS268E–MAY2005–REVISEDJANUARY2007
ThedMAXisamoduledesignedtoperformDataMovementAcceleration.ThedMAXcontrollerhandles
user-programmeddatatransfersbetweentheinternaldatamemorycontrollerandthedeviceperipherals
ontheC672xDSP.ThedMAXallowsmovementofdatato/fromanyaddressablememoryspace,
includinginternalmemory,peripherals,andexternalmemory.ThedMAXcontrollerintheC672xDSPhas
adifferentarchitecturefromthepreviousEDMAcontrollerintheC621x/C671xdevices.
ThedMAXcontrollerincludesfeatures,suchascapabilitytoperformthree-dimensionaldatatransfersfor
advanceddatasorting,capabilitytomanageasectionofthememoryasacircularbuffer/FIFOwithdelay
tapbasedreadingandwritingdata.ThedMAXcontrolleriscapableofconcurrentlyprocessingtwo
transferrequests(providedthattheyareto/fromdifferentsource/destinations).
Figure4-4showsablockdiagramofthedMAXcontroller.
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