Re: [iPAQ] SD Card protocol specs

Yes, it is pretty much useless. The main difference between SD and MMC memory
cards is the initialization sequence which they do not detail in the
simplified specification.

Cliff

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On Tuesday 25 February 2003 06:08 pm, Steven Reddie wrote:
Thanks. Unfortunately it stops short of defining the commands (and even
seems to purposely obscure the command names when comparing them with MMC
commands). Looks like you have to be a member to find out how it works. I
thought we'd come out of such dark-ages.

Steven

-----Original Message-----
From: ipaq-bounces@handhelds.org [mailto:ipaq-bounces@handhelds.org]On
Behalf Of Nicholas, Ken
Sent: Wednesday, 26 February 2003 8:41 AM
To: ipaq@handhelds.org
Subject: RE: [iPAQ] SD Card protocol specs

There is a 'simplified' version of the SD physical specification that
isn't confidential and doesn't require an NDA.

http://www.sdcard.org/sdphysical_simplifyed_Ver101.PDF

Whether it answers your question or not is another issue.

-----Original Message-----
From: Steven Reddie [mailto:smr@essemer.com.au]
Sent: Tuesday, February 25, 2003 3:22 PM
To: ipaq@handhelds.org
Subject: [iPAQ] SD Card protocol specs

Does anyone know where there are specs on the SD Card? www.sdcard.org
doesn't seem to have make them available to non-members. The flash
chips contains blocks of 512-bytes and associated with each block is a
further 16-bytes of bookkeeping data. I'm specifically wondering if
this metadata in each flash sector is accessible from outside the card.

Regards,

Steven

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_______________________________________________
Open Source Software for Compaq iPAQ Handhelds.
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irc://irc.openprojects.net #ipaq
Received on Wed Feb 26 15:08:52 2003