3.2.7.2 SD Card Socket
A standard MMC/SD card connector, connected to SDMMC0, is mounted on the bottom side of the board. The SDMMC0 communication is based on an 8-pin interface (clock, command, four data and power lines). It includes a card detection switch.
The figure below illustrates the implementation for the SDMMC0 interface.
The table below describes the pin assignment of SD/MMC connector J5.
| Function | Pin | Shared | Signal Description |
|---|---|---|---|
| PA5 | 1 | – | SDMMC0_DAT3_PA5 |
| PA1 | 2 | – | SDMMC0_CMD_PA1 |
| GND | 3 | – | Ground |
| VCC | 4 | – | VDDSDHC (3v3) |
| PA0 | 5 | – | SDMMC0_CK_PA0 |
| PA13 | 6 | – | SDMMC0_CD_PA13 (card detect) |
| PA2 | 7 | – | SDMMC0_DAT0_PA2 |
| PA3 | 8 | – | SDMMC0_DAT1_PA3 |
| PA4 | 9 | – | SDMMC0_DAT2_PA4 |
| PA13 | 10 | – | SDMMC0_CD_PA13 |
| PA12 | 11 | – | SDMMC0_WP_PA12 |
| GND | 12 | – | Ground |