Texas Instruments TMS320DM644x User Manual
www.ti.com
Native packets
Native
signals
signals
CMD
CLK
DAT0 or DAT0−3
MMC/SD
controller
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
Peripheral Architecture
Figure 2. MMC/SD Controller Interface Diagram
Figure 3. MMC Configuration and SD Configuration Diagram
SPRUE30B – September 2006
Multimedia Card (MMC)/Secure Digital (SD) Card Controller
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