Tech Support > Microsoft Windows > Drivers > Support USB2.0 High-Speed, High Bandwidth Endpoints
Support USB2.0 High-Speed, High Bandwidth Endpoints
Posted by CLT on November 8th, 2004


Dear Sir,
My Company is the IC Design House.
We are design IC for 802.11 QOS.

Does Windows XP USB2.0 EHCI driver support "the High-Speed, High Bandwidth
Endpoints" ?????

In USB2.0 spec......... section 5.9....
5.9 High-Speed, High Bandwidth Endpoints
USB supports individual high-speed interrupt or isochronous endpoints that
require data rates up to
192 Mb/s (i.e., 3072 data bytes per microframe). One, two, or three
high-speed transactions are allowed in
a single microframe to support high-bandwidth endpoints.

Best Regards,

CLT




Posted by Marc Reinig on November 8th, 2004


I don't think they are supported for Interrupt endpoints in XP or Server
2003, but I think Longhorn does.

Marc Reinig
System Solutions

"CLT" <CLT@discussions.microsoft.com> wrote in message
news:4BB1C869-754F-4116-8DDD-476EFD4E5527@microsoft.com...


Posted by Jackal Huang on November 9th, 2004


I think the anwser is "Yes" since our device works for high bandwidth
isochronous transfer. Currently, our device can transfer up to 2048 bytes
per microframe.

Best Regards

Jackal Huang

"CLT" <CLT@discussions.microsoft.com> ...