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Chapter11
SPRU978E–March2008
BootModes
TheTMS320DM643xDMPcanbootfromeitherasynchronousEMIF/NORFlashdirectlyorfrominternal
bootROM,asdeterminedbythesettingofthedevicebootandconfigurationpins.Theinputstatesofthe
bootandconfigurationpinsaresampledandlatchedintotheBOOTCFGregisterwhendeviceresetis
deasserted.Refertothedevice-specificdatamanualforthelistofbootandconfigurationpinsandalistof
bootmodessupportedontheDM643xDMP.
Inallbootmodes,theC64x+CPUisimmediatelyreleasedfromresetandbeginsexecutingfromoneof
thetwopossibleaddresses:
•EMIFAChipSelectSpace2(42000000h)
•InternalBootROM(00100000h)
ForthebootmodesthatstartattheinternalbootROM,theROMBootLoader(RBL)softwareis
responsibleforcompletingthebootsequence.SeeUsingtheTMS320DM643xBootloader(SPRAAG0)for
moredetailsontheROMBootLoader.
SPRU978E–March2008BootModes95
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