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PRODUCT PREVIEW
4.2DataSwitchFabricConnections
TMS320C6454
Fixed-PointDigitalSignalProcessor
SPRS311A–APRIL2006–REVISEDDECEMBER2006
Figure4-1showstheconnectionbetweenslavesandmastersthroughthedataswitchedcentralresource
(SCR).Mastersareshownontherightandslavesontheleft.ThedataSCRconnectsmasterstoslaves
via128-bitdatabusesrunningataSYSCLK2frequency.SYSCLK2issuppliedbythePLL1controllerand
isfixedatafrequencyequaltotheCPUfrequencydividedby3.
Someperipherals,likePCIandtheC64x+Megamodule,havebothslaveandmasterports.Notethat
eachEDMA3transfercontrollerhasanindependentconnectiontothedataSCR.
NotethatmasterscanaccesstheconfigurationSCRthroughthedataSCR.TheconfigurationSCRis
describedinSection4.3.
NotallmastersontheC6454DSPmayconnecttoallslaves.Allowedconnectionsaresummarizedin
Table4-1.
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