USB chipset support

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Georg Grillmayer

USB chipset support

Post by Georg Grillmayer » Fri Aug 01, 2003 10:02 pm

I want to buy a USB PC104 expansion board or even a new PC104 mainboard
with a USB controller. How do I know which chipsets are supported by QNX6.
On the USB manager help pages 'devu-ohci' or 'devu-uhci' no harware
chipsets are mentioned.

Thanks,
Georg

Henry Van Dyke

Re: USB chipset support

Post by Henry Van Dyke » Tue Aug 05, 2003 1:46 pm

OHCI and UHCI refers to chipset specifications.
(Available at www.usb.org)
These specs describe the register level interface
for the USB chip. So as long as the chip conforms
to one of these, than either devu-ohci or devu-uhci
should work.

Different manufacturers make chips that conform to
either OHCI or the UHCI spec.

If the chip is on a PCI bus than you can tell which
chip you have by looking at the Class Code in the
output from 'pci -vvvvv'.

UHCI is 0x0c0300
OHCI is 0x0c0310


Georg Grillmayer <lrt25565@stud.uni-stuttgart.de> wrote:
: I want to buy a USB PC104 expansion board or even a new PC104 mainboard
: with a USB controller. How do I know which chipsets are supported by QNX6.
: On the USB manager help pages 'devu-ohci' or 'devu-uhci' no harware
: chipsets are mentioned.

: Thanks,
: Georg

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