OHCI(4) BSD Kernel Interfaces Manual OHCI(4)NAME
ohci -- OHCI USB Host Controller driver
The ohci driver provides support for OHCI-type PCI based USB controllers.
The ohci driver supports all OHCI v1.0 compliant controllers including:
o AcerLabs M5237 (Aladdin-V)
o OPTi 82C861 (FireLink)
o NEC uPD 9210
o CMD Tech 670 (USB0670)
o CMD Tech 673 (USB0673)
o NVIDIA nForce3
o Sun PCIO-2 (RIO USB)
SEE ALSO ehci(4), uhci(4)HISTORY
The ohci device driver first appeared in FreeBSD 3.0.
The ohci driver was written by Lennart Augustsson <email@example.com> for the NetBSD project.
BSD June 23, 2005 BSD
Check Out this Related Man Page
EHCI(4) BSD Kernel Interfaces Manual EHCI(4)NAME
ehci -- USB Enhanced Host Controller driver
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 ohci(4), uhci(4), usb(4)HISTORY
The ehci device driver first appeared in FreeBSD 5.1.
The driver is not finished and is quite buggy.
There is currently no support for isochronous transfers.
BSD March 20, 2005 BSD
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