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ehci.4freebsd
Langue: en
Version: 300665 (debian - 07/07/09)
Section: 4 (Pilotes et protocoles réseau)
BSD mandoc
NAME
ehci - USB Enhanced Host Controller driverSYNOPSIS
device ehciDESCRIPTION
The 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 controllers. 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
ohci(4), uhci(4), usb(4)HISTORY
The device driver first appeared in Fx 5.1 .BUGS
The driver is not finished and is quite buggy.There is currently no support for isochronous transfers.
Contenus ©2006-2024 Benjamin Poulain
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