sdhc(4) [netbsd man page]
SDHC(4) BSD Kernel Interfaces Manual SDHC(4) NAME
sdhc -- SD Host Controller SYNOPSIS
sdhc* at pci? sdhc* at cardbus? function ? sdmmc* at sdhc? DESCRIPTION
The sdhc driver provides support for SD controllers following the SD Host Controller Standard Simplified Specification. The sdmmc(4) subsystem performs SD/MMC transactions to communicate with whatever MMC, SD, SDHC, or SDIO devices are inserted into the SD slot. SEE ALSO
intro(4), sdmmc(4) HISTORY
The sdhc driver was written by Uwe Stuehler <uwe@openbsd.org> for OpenBSD and ported to NetBSD by NONAKA Kimihiro <nonaka@netbsd.org>. BSD
April 21, 2009 BSD
Check Out this Related Man Page
EHCI(4) BSD Kernel Interfaces Manual EHCI(4) NAME
ehci -- USB Enhanced Host Controller driver SYNOPSIS
ehci* at cardbus? function ? ehci* at pci? dev ? function ? usb* at ehci? DESCRIPTION
The ehci driver provides support for the USB Enhanced Host Controller Interface, which is used by USB 2.0 controllers. EHCI controllers are peculiar in that they can only handle the USB 2.0 protocol. This means that they normally have one or more companion controllers (i.e., ohci(4) or uhci(4)) handling USB 1.x devices. Consequently each USB connector is electrically connected to two USB con- trollers. The handling of this is totally automatic, but can be noticed since USB 1.x and USB 2.0 devices plugged in to the same connector appear to connect to different USB busses. SEE ALSO
cardbus(4), ohci(4), pci(4), uhci(4), usb(4) HISTORY
The ehci driver appeared in NetBSD 1.6. BUGS
The support for hubs that are connected with high speed upstream and low or full speed downstream (i.e., for transaction translators) is lim- ited. BSD
Aug 10, 2008 BSD