3.3.2 e.MMC Memory
The SAMA7G54-EK supports e.MMC NAND Flash memory through its Secure Digital Multimedia Controller (SDMMC), and the board implements an S40FC004C1B1C00000, 32-Gb e.MMC NAND Flash to provide a 4-Gbyte memory space.
| PIO | Signal Name | Shared PIO | Signal Description |
|---|---|---|---|
| PA0 | SDMMC0_CK_PA0 | – | e.MMC clock signal |
| PA1 | SDMMC0_CMD_PA1 | – | e.MMC command line |
| PA2 | SDMMC0_RSTN_PA2 | – | e.MMC reset signal |
| PA3 | SDMMC0_DAT0_PA3 | – | e.MMC data line 0 |
| PA4 | SDMMC0_DAT1_PA4 | – | e.MMC data line 1 |
| PA5 | SDMMC0_DAT2_PA5 | – | e.MMC data line 2 |
| PA6 | SDMMC0_DAT3_PA6 | – | e.MMC data line 3 |
| PA7 | SDMMC0_DAT4_PA7 | – | e.MMC data line 4 |
| PA8 | SDMMC0_DAT5_PA8 | – | e.MMC data line 5 |
| PA9 | SDMMC0_DAT6_PA9 | – | e.MMC data line 6 |
| PA10 | SDMMC0_DAT7_PA10 | – | e.MMC data line 7 |
| PA11 | SDMMC0_DS_PA11 | – | e.MMC data strobe |
To enable booting on e.MMC, the PA14 I/O must be grounded. A circuitry is available on the SAMA7G54-EK board to enable/disable boot from e.MMC. See Disable Boot for more details.