P2010 eSDHC, different commands SD spec <> P2010 spec

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P2010 eSDHC, different commands SD spec <> P2010 spec

380 Views
michalszlachetk
Contributor I

Hello,

im using P2010 and eSDHC, but i found some differences between SD Card spec and P2010 spec (check https://www.sdcard.org/downloads/pls/ -> Simplified , cmd20, cmd26, cmd27) are used for something completely different than in P2010 manual. Could you explain this a little bit?

Best Regards

Michal Szlachetka

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Pavel
NXP TechSupport
NXP TechSupport

I can see that P2010 use part of possibility for CMD20.

SDHC Specification contains information that CMD26 is reserved.

 

It looks like that you should not use CMD26 in your code.

Have a great day,
Pavel Chubakov

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Pavel
NXP TechSupport
NXP TechSupport

There is little difference for CMD20 only.

Is there problem for using these commands on your board?

Have a great day,
Pavel Chubakov

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96 Views
michalszlachetk
Contributor I

Thanks for your reply Pavel :smileyhappy:

At this moment not, but i don't know how it will be when i port code to another uC (which is possible and SD protocol usage should be the same regardless of uC -> only very low level implementation should be changed)

Br

Michal

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