ZERO SOM/ZERO Hardware/Peripherals/SD
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| 2025/06/12 | First release | ||
Peripheral SD[edit | edit source]
The SD/MMC host interface (SDHI) provides the features listed below.
Description[edit | edit source]
- SDIO card interface: 1-bit/4-bit
- SD, SDHC, and SDXC SD memory card access supported
- Default, high-speed, UHS-I/SDR12, SDR25, SDR50, SDR104, and DDR50 transfer modes
- Error check function: CRC7 (for command/response), CRC16 (for data)
- Card detect and Write protect supported
- MMC interface (1-/4-/8-bit MMC bus)
- e-MMC device access supported
- Backward-compatible, high-speed (SDR/DDR), and HS200 transfer modes supported
- High-priority interrupt (HPI) supported
