Difference between revisions of "ETRA SOM/ETRA Hardware/Peripherals/SDMMC"

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__FORCETOC__
 
__FORCETOC__
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<section begin="Body" />
  
 
==Peripheral SDMMC ==
 
==Peripheral SDMMC ==
  
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''TBD: sostituire le sezioni con le informazioni sull'uso della periferica''
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Secure digital input/output MultiMediaCard interface (SDMMC) provides an interface between the AHB bus and SD memory cards, SDIO cards and eMMC devices.
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''Nell'esempio di seguito c'è la descrizione dell'interfaccia HDMI''
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ETRA SoM provides up to two SDMMC interfaces, the second interface is internally used if the eMMC flash is populated on board of the SoM.
  
 
=== Description  ===
 
=== Description  ===
  
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The SDMMC interface available on ETRA is based on xxxxx ''TBD:SOC name'' SoC.  
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The SDMMC interface available on ETRA SoM is based on STM32MP1 SoC.  
  
 
The SDMMC port supports the following standards and features:
 
The SDMMC port supports the following standards and features:
  
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* High-Definition Multimedia Interface Specification, Version 1.4a
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* compliance with Embedded MultiMediaCard System Specification Version 5.1  
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* Support for up to 1080p at 60Hz HDTV display resolutions and up to QXGA graphic display resolutions.  
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* card support for three different databus modes: 1-bit (default), 4-bit and 8-bit (HS400 is not supported)
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* Support for 4k x 2k and 3D video formats
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* full compatibility with previous versions of MultiMediaCards (backward compatibility)
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* Support for up to 16-bit Deep Color modes
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* full compliance with SD memory card specifications version 6.0 (SPI mode and UHS-II mode not supported)
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* full compliance with SDIO card specification version 4.0 (SPI mode and UHS-II mode not supported)
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* data transfer up to 208 Mbyte/s for the 8-bit mode
  
 
===Pin mapping===
 
===Pin mapping===

Revision as of 10:51, 30 December 2020

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History
Version Issue Date Notes
0.9.0 Dec 2020 First Draft
[TBD_link X.Y.Z] Month Year TBD
... ... ...



Peripheral SDMMC[edit | edit source]

Secure digital input/output MultiMediaCard interface (SDMMC) provides an interface between the AHB bus and SD memory cards, SDIO cards and eMMC devices.

ETRA SoM provides up to two SDMMC interfaces, the second interface is internally used if the eMMC flash is populated on board of the SoM.

Description[edit | edit source]

The SDMMC interface available on ETRA SoM is based on STM32MP1 SoC.

The SDMMC port supports the following standards and features:

  • compliance with Embedded MultiMediaCard System Specification Version 5.1
  • card support for three different databus modes: 1-bit (default), 4-bit and 8-bit (HS400 is not supported)
  • full compatibility with previous versions of MultiMediaCards (backward compatibility)
  • full compliance with SD memory card specifications version 6.0 (SPI mode and UHS-II mode not supported)
  • full compliance with SDIO card specification version 4.0 (SPI mode and UHS-II mode not supported)
  • data transfer up to 208 Mbyte/s for the 8-bit mode

Pin mapping[edit | edit source]

The Pin mapping is described in the Pinout table section

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