freebsd man page for mmc

MMC(4)							   BSD Kernel Interfaces Manual 						    MMC(4)

NAME
     mmc -- MultiMediaCard and SD Card bus driver

SYNOPSIS
     device mmc

DESCRIPTION
     The mmc driver implements the MMC and SD Card bus.  The mmc driver supports all MMC and SD bridges in the system.	All SD or MMC cards in the
     system attach to an instance of mmc.  The mmc bus typically has only one slot, and only memory cards.  MultiMediaCards exist only in memory.
     SD Cards exist as memory, I/O, or combination cards.

SEE ALSO
     at91_mci(4), mmcsd(4), sdhci(4)

     SD Specifications, Part 1, Physical Layer, Simplified Specification.

     The MultiMediaCard System Specification.

BUGS
     SDIO cards currently do not work.

BSD
								  October 8, 2008							       BSD