Messages in this thread | | | Date | Tue, 23 Jun 2009 11:23:35 +0200 | Subject | Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init! | From | Linus Walleij <> |
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2009/6/22 Russell King - ARM Linux <linux@arm.linux.org.uk>:
> If I knew what this "eMMC" was...
It's to be read out "embedded MultiMediaCard", comes from JEDEC but is based on the standard from MMCA. Just as it says, it's like an MMC card you embed.
It uses lower voltages than MMC and thus save some power. It doesn't look like an MMC card either, it comes in a standardized solder-on BGA package so it looks like any chip, no expensive card holders. It uses 8bit wide transfers giving a total of 10 pins for the bus. (Plus voltage of course.)
But usually you reuse a standard MMC hardware IP to talk to it.
Here is some whitepaper: http://www.jedec.org/download/search/JESD84-C43.pdf
Linus Walleij
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