Re: SPI mode of SD I/O interface
From: Cliff Brake (cbrakenospam_at_nospam.com)
Date: 06/29/04
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Date: Tue, 29 Jun 2004 12:09:10 -0400
liooil wrote:
>
> Hello world,
>
> Someone is talking to me about SPI mode of SD I/O interface ....
>
> Is there anybody that can explain what it is about?
>
> Any link, book is appreciate.
>
> Thx,
>
The SDCard.org specification requires that SD devices (cards, I/O devices,
whatever) support the native SD hardware protocol as well as a simpler SPI
hardware protocol. The idea is you could support SD cards in low end
microcontroller systems which usually have a SPI interface. The
http://sdcard.org site used to have a pdf you could download that detailed
the hardware interfaces, but I don't see it now. SDCard.org does not make
it easy to support their standard :(.
-- Cliff Brake (eMVP) BEC Systems cbrake _at_ bec-systems _dot_ com
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