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5.7ExternalMemoryInterface(EMIF)
5.7.1AsynchronousEMIF(AEMIF)
TMS320DM355
DigitalMediaSystem-on-Chip(DMSoC)
SPRS463A–SEPTEMBER2007–REVISEDSEPTEMBER2007
supportsseveralmemoryandexternaldeviceinterfaces,including:
•AsynchronousEMIF(AEMIF)forinterfacingtoSRAM.
•OneNANDflashmemories
•NANDflashmemories
TheEMIFsupportsthefollowingfeatures:
•SRAM,etc.onupto2asynchronouschipselectsaddressableupto64KBeach
•Supports8-bitor16-bitdatabuswidths
•Programmableasynchronouscycletimings
•Supportsextendedwaitmode
•SupportsSelectStrobemode
5.7.1.1NAND(NAND,SmartMedia,xD)
TheNANDfeaturesoftheEMIFareasfollows:
•NANDflashonupto2asynchronouschipselects
•8and16-bitdatabuswidths
•Programmablecycletimings
•Performs1-bitand4-bitECCcalculation
•NANDModealsosupportsSmartMedia/SSFDC(SolidStateFloppyDiskController)andxDmemory
cards
5.7.1.2OneNAND
TheOneNANDfeaturessupportedareasfollows.
•NANDflashonupto2asynchronouschipselects
•Only16-bitdatabuswidths
•Supportsasynchronouswritesandreads
•Supportssynchronousreadswithcontinuouslinearburstmode(Doesnotsupportsynchronousreads
withwrapburstmodes)
•Programmablecycletimingsforeachchipselectinasynchronousmode
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