MITO 8M Mini SOM/MITO 8M Mini Hardware/Peripherals/SDIO

From DAVE Developer's Wiki
Jump to: navigation, search
Issue Date Notes


First release
2021/01/28 Update USDHC1,USDHC2,USDHC3 information

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 Mini/Nano SOM provides up to three 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 USDHC1, USDHC2 and USDHC3 interface is routed externally the SOM
  • on eMMC on board version, the USDHC1 interface is internally connected, and the NAND interface is routed externally the SOM with USDHC2 and USDHC3

See Pin mapping tables for connection details.

Description[edit | edit source]

The SDIOs interface available on MITO 8M Mini/Nano is based on iMX8M Mini/Nano 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