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Peripheral Architecture
Figure 2. MMC/SD Controller Interface Diagram
MMCs or SD cards
ARM |
|
MMC/SD |
|
controller | Native |
CMD | signals |
| |
| Native packets |
DAT0 or DAT0−3 |
|
CLK |
|
Memory |
|
EDMA |
|
Figure 3. MMC Configuration and SD Configuration Diagram
MMC/SD configuration
MMC/SD controller | MMC and SD (1−bit mode) |
SD_CLK CLK
SD_CMD CMD
SD_DATA0 DAT0
SD_DATA1
SD_DATA2
SD_DATA3
SD configuration
MMC/SD controller | SD card (4−bit mode) |
SD_CLK CLK
SD_CMD CMD
SD_DATA0 DAT0
SD_DATA1 DAT1
SD_DATA2 DAT2
SD_DATA3 DAT3
SPRUE30B | Multimedia Card (MMC)/Secure Digital (SD) Card Controller | 11 |