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Native packets
Native
signals
CMD
CLK
DAT0 or DAT0−3
MMC/SD
controller
ARM
EDMA
Memory
MMCs or SD cards
SD_CLK
SD_CMD
SD_DATA0
SD_DATA1
SD_DATA2
SD_DATA3
MMC/SD controller MMC and SD (1−bit mode)
CLK
CMD
DAT0
MMC/SD configuration
MMC/SD controller
SD_DATA0
SD_CMD
SD_CLK
DAT0
CMD
SD card (4−bit mode)
CLK
SD_DATA2
SD_DATA3
SD_DATA1
SD configuration
DAT1
DAT2
DAT3
PeripheralArchitecture
Figure2.MMC/SDControllerInterfaceDiagram
Figure3.MMCConfigurationandSDConfigurationDiagram
SPRUE30B–September2006MultimediaCard(MMC)/SecureDigital(SD)CardController11
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