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SubjectRe: New MMC maintainer needed
On Mon, Jul 27, 2009 at 01:09:47PM +0100, David Vrabel wrote:
> Philip Langdale wrote:
> >
> > Both the (Simplified) SD and SDIO specifications do not formally
> > define the 'low voltage' range in the way the MMC spec does. ie: You
> > won't find anything in the SD specs that even tell you what the range
> > is - it just says that it exists.
>
> Standard SD/SDIO cards only support 2.7-3.6V.
>
> 1.8V operation is added in SD physical spec 3.00 and is part of any of
> the UHS-1 modes (SDR12-SDR104 and DDR50). It has a different timings
> and requires a different (3.00 compliant) host controller.

Is the 3.00 spec publicly available?


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