4,199
edits
Changes
From IGEP - ISEE Wiki
no edit summary
=== MMC ===
MMC (Multimedia Controller) is peripheral than can manage SD/MMC/[http://en.wikipedia.org/wiki/Secure_Digital#SDIO SDIO] , but other peripherals can be controled with this interface like Wlan. The MMC/SD/SDIO host controller deals with MMC/SD/SDIO protocol at transmission level, data packing, adding cyclic redundancy checks (CRC), start/end bit, and checking for syntactical correctness. Data transfers between the MMC controller and a memory card can use one bidirectional data line (for the MMC protocol) or four parallel data lines (for the SD protocol). There are three MMC peripherals (MMC1,MMC2 and MMC3).<br>
- MMC_DAT7: SD/MMC data pin 7. Used by SDIO.<br>- MMC_DAT6: SD/MMC data pin 6. Used by SDIO.<br>- MMC_DAT5: SD/MMC data pin 5. Used by SDIO.<br>- MMC_DAT4: SD/MMC data pin 4. Used by SDIO.<br>- MMC_DAT3: SD/MMC data pin 3. Used in SD card default data mode.<br>- MMC_DAT2: SD/MMC data pin 2. Used in SD card default data mode.<br>- MMC_DAT1: SD/MMC data pin 1. Used in SD card default data mode.<br>- MMC_DAT0: SD/MMC data pin 0. Used in MMC and SD card default data mode.<br>- MMC_CMD: SD/MMC command signal.<br>- MMC_CLK0: SD/MMC clock signal.<br>
