ZERO SOM/ZERO Evaluation Kit/Interfaces and Connectors/micro SD
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micro SD[edit | edit source]
Description[edit | edit source]
The micro SD interface available on the Evaluation Kit at the connector J8.
J8 is a Micro-SD card header. This interface is connected to the sdhi0 controller of the RZ/T2H CPU.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | OSM contact | OSM name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1 | H20 | SDIO_A_D2 | SDIO data 2 | |
| 2 | H21 | SDIO_A_D3 | SDIO data 3 | |
| 3 | E20 | SDIO_A_CMD | CMD | |
| 4 | - | 3V3 | +3.3 V | |
| 5 | F21 | SDIO_A_CLK | Clock | |
| 6 | - | DGND | Ground | |
| 7 | G20 | SDIO_A_D0 | SDIO data 0 | |
| 8 | G21 | SDIO_A_D1 | SDIO data 1 | |
| 9 | J21 | CD | Card detect | |
| 10, 11, 12, 13 | - | SD_SHIELD | Shield |
Device mapping[edit | edit source]
The microSD card is mapped to /dev/mmcblk0. The available partitions are shown as /dev/mmcblk0p1, /dev/mmcblk0p2, etc.
Device usage[edit | edit source]
The device can be mounted/accessed as a standard block device in Linux.
