Re: SDIO interface specification
dmm!_at_work.now
Date: 06/11/04
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Date: Fri, 11 Jun 2004 18:42:02 +1000
On 10 Jun 2004 12:09:01 -0700, graeme@microcommander.com (Graeme) wrote:
>Hello all,
>
>Has anyone had any experience with, or has any technical documentation
>on the SDIO card interface? Specifically, I am interested in the
>timing of the SD 4-bit bus interface.
>
>I have been searching online and found that SanDisk and the SD Card
>Association have good higher level information on the interface, but
>they fall short when it comes to the timing diagrams.
>
>I would think that one of the many SDIO manufacturers would have
>documents on the timing of signals to the device. However, I have
>also been unable to find anything more specific than a brocheur for
>these parts.
>
>Has anyone had better luck finding the timing specs for SDIO? Does
>anyone have any better suggestions for me? Does one have to be a
>member of the SD Card association to implement an interface for SD?
>
>Many thanks,
>
>Graeme Rouse
You can ask your local SanDisk agent for a copy of the SDIO, and the SD standard.
I think version 1.9 of the SD card is the latest version.
I've heard that different manufacturers have slightly different interpretations,
consequently different implementations.
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