Does the i.MX6 Solo Light support SDIO Simplified Specification Part E1, Version 3.00.

[aworthi]

It’s a little confusing since the SDIO is an extension of the SD Spec.  The way I read it, v3.0 could effectively be supported.  The Datasheet states SDIO Card specification, Part E1, v1.10, it explicitly states UHS-I SDR104 mode at 104 MB/s which was introduced in SDIO Card specification, Part E1, v3.00.  So it looks like it can handle the speed.  Are there any other features introduced in v2.00 or v3.00 that are not supported?

Thanks in advance

[igorpadykov]

Hi aworthi

datasheet IMX6SLCEC p.14 states

one can find differencies between 1.10 and 3.0 versions on links below

Latest Simplified Specifications - SD Association

Archive - SD Association

Best regards

igor

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[aworthi]

Igor,

I understand this from the specifications.  But it seems that the SDIO also supports UHS-I SDR104 mode (104 MB/s max) which is specified in version 3.0.  Are there any other features greater than 1.10 that are implemented?  If I want to run SDIO at 104 MB/s are there any limitations?

Thank you. 

[Yuri]

  Really there are some terminology inaccuracies with SD / MMC specs in our documentation.
As for MMC - 104 MB/s max can be acnieved under 8-bit transfer mode up to 52 MHz in DDR mode.

For SD - maximum frequency is 50 MHz, bus width = 4 bit.

~Yuri.

[igorpadykov]

Hi aworthi

I do not think that smth implemented above mentioned in documentation,

there are no limitations with SDR104.

Best regards

igor