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AXEL Lite SOM/AXEL Lite Hardware/Peripherals/SDIO

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==Peripheral SDIO ==
''TBDAXEL Lite SOM provides up to three SDIO interfaces; due to PINMUX restrcitions and usa of the NAND controller onboard, a typical usage on AXEL Lite SOM is the following one: sostituire le sezioni con le informazioni sull'uso della periferica''''Nell'esempio di seguito c'è la descrizione dell'interfaccia HDMI''* SD1 configured in 4-bit mode and used as boot device (with BOOT_SEL)* SD2 configured in 4-bit mode* SD3 configured in 8-bit mode: a typical connection for this interface is forx interfacing an external eMMC storage device
=== Description ===
The SDIO interface available on AXEL Lite is based on xxxxx ''TBD:SOC name'' i.Mx6 SoC.
The SDIO port supports the following standards and features:
* High1-bit or 4-Definition Multimedia Interface Specification, Version 1.4a bit transfer mode specifications for SD and SDIO cards up to UHS-I SDR-104 mode (104 MB/s max)* Support 1-bit, 4-bit, or 8-bit transfer mode specifications for MMC cards up to 1080p at 60Hz HDTV display resolutions 52 MHz in both SDR and DDR modes (104 MB/s max)* Compatible with SD Memory, miniSD Memory, SDIO, miniSDIO, SD Combo, MMC and up MMC RS, embedded MMC and embedded SD cards* Up to QXGA graphic display resolutions. 200 Mbps data transfer for SD/SDIO cards using 4 parallel data lines* Support Up to 416 Mbps data transfer for 4k x 2k and 3D video formats MMC cards using 8 parallel data lines* Support Up to 832 Mbps data transfer for up to 16MMC/SD cards using 8 parallel data lines in DDR mode* Dual internal 32x32-bit Deep Color modesFIFOs
===Pin mapping===
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