MITO 8M SOM/MITO 8M Hardware/Peripherals/SDIOs

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Issue Date Notes
2020/10/27 First release

Peripheral SDIOs[edit | edit source]

The Ultra Secured Digital Host Controller (uSDHC) provides the interface between the host system and the SD/SDIO/MMC cards or devices.

MITO 8M SOM provides up to two SDIO interface available for an external memory device connection.

The availability of this interface is related to the SOM mounting option:

  • on NAND on board version, the NAND interface is internally connected, and the SD1 interface is routed externally the SOM
  • on eMMC on board version, the SD1 interface is internally connected, and the NAND interface is routed externally the SOM

See Pin mapping tables for connection details.

Description[edit | edit source]

The SDIOs interface available on MITO 8M is based on iMX8M SoC.

The SDIOs port supports the following standards and features:

  • Conforms to the SD Host Controller Standard Specification version 2.0/3.0
  • Compatible with the MMC System Specification version 4.2/4.3/4.4/4.41/5.0/5.1
  • Compatible with the SD Memory Card Specification version 3.0 and supports the Extended Capacity SD Memory Card
  • Compatible with the SDIO Card Specification version 2.0/3.0
  • Supports 1-bit/4-bit SD and SDIO modes, and 1-bit/4-bit/8-bit MMC modes
  • Card bus clock frequency up to 208 MHz

Pin mapping[edit | edit source]

The Pin mapping is described in the Pinout table section