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4K bytes
8K bytes
16K bytes
L1P memory
00E0 0000h
00E0 4000h
00E0 6000h
00E0 7000h
00E0 8000h
direct
mapped
SRAM
1/2
dm
3/4
SRAM
SRAM
7/8
All
SRAM
000 001 010 011 100
Block base
address
L1P mode bits
cache
4K bytes
cache
direct
mapped
cache
direct
mapped
cache
4K bytes
8K bytes
16K bytes
L1D memory
00F0 0000h
00F0 4000h
00F0 6000h
00F0 7000h
00F0 8000h
2-way
SRAM
1/2
2-way
3/4
SRAM
SRAM
7/8
All
SRAM
000 001 010 011 100
Block base
address
L1D mode bits
cache
4K bytes
cache
2-way
cache
2-way
cache
SM320C6455-EP
FIXED-POINTDIGITALSIGNALPROCESSOR
SPRS462B–SEPTEMBER2007–REVISEDJANUARY2008
•Region1sizeis32Kbyteswithnowaitstates.
L1Disatwo-wayset-associativecachewhileL1Pisadirect-mappedcache.
TheL1PandL1DcachecanbereconfiguredviasoftwarethroughtheL1PMODEfieldoftheL1P
ConfigurationRegister(L1PMODE)andtheL1DMODEfieldoftheL1DConfigurationRegister(L1DCFG)
oftheC64x+Megamodule.Afterdevicereset,L1PandL1Dcacheareconfiguredasallcacheorall
SRAM.Theon-chipBootloaderchangestheresetconfigurationforL1PandL1D.Formoreinformation,
seetheTMS320C645xBootloaderUser'sGuide(literaturenumberSPRUEC6).
Figure5-2andFigure5-3showtheavailableSRAM/cacheconfigurationsforL1PandL1D,respectively.
Figure5-2.C6455L1PMemoryConfigurations
Figure5-3.C6455L1DMemoryConfigurations
C64x+Megamodule 88SubmitDocumentationFeedback