USB WLAN cannot work via USB Hub ?

Hi,
My platform is PXA270 with WinCE5.0 OS. BSP is MAINSTONEII platform builder
provided.
USB WLAN can work properly in USB port of PXA270 directly. But if I connect
one USB Hub then plug USB mouse, USB keyboard and USB WLAN in Hub, the USB
WLAN will fail. Situation is show unknown device. I find the order 3rd USB
device in USB hub will fail once this WLAN device exist. If only two USB
device (USB WLAN and USB mouse) in USB Hub, they will work fine. If over 3
USB mouse plug in Hub(without WLAN device), they also work fine. WLAN vendor
is debugging this issue now, they find WLAN cannot get correct PIPE resource
in Hub.
I don't revise any USB driver code in MAINSTONEII BSP. Should I debug HCD
code ?
Or, what is the possible reason ?

thanks
Rick

xinchen
Thu Jan 05 10:39:25 CST 2006

rick
can you tell me how can i contact with the usb WLAN company
"Rick" <Rick@discussions.microsoft.com> дÈëÏûÏ¢ÐÂÎÅ:5E8C7AA2-C93A-498A-BCDC-81FB6D303B50@microsoft.com...
> Hi,
> My platform is PXA270 with WinCE5.0 OS. BSP is MAINSTONEII platform
> builder
> provided.
> USB WLAN can work properly in USB port of PXA270 directly. But if I
> connect
> one USB Hub then plug USB mouse, USB keyboard and USB WLAN in Hub, the USB
> WLAN will fail. Situation is show unknown device. I find the order 3rd USB
> device in USB hub will fail once this WLAN device exist. If only two USB
> device (USB WLAN and USB mouse) in USB Hub, they will work fine. If over 3
> USB mouse plug in Hub(without WLAN device), they also work fine. WLAN
> vendor
> is debugging this issue now, they find WLAN cannot get correct PIPE
> resource
> in Hub.
> I don't revise any USB driver code in MAINSTONEII BSP. Should I debug HCD
> code ?
> Or, what is the possible reason ?
>
> thanks
> Rick

Rick
Thu Jan 05 21:39:03 CST 2006

Xinchen,
You can visit http://www.qcom.com.tw/

thanks
Rick

"xinchen" wrote:

> rick
> can you tell me how can i contact with the usb WLAN company
> "Rick" <Rick@discussions.microsoft.com> �´�ë�û�¢����:5E8C7AA2-C93A-498A-BCDC-81FB6D303B50@microsoft.com...
> > Hi,
> > My platform is PXA270 with WinCE5.0 OS. BSP is MAINSTONEII platform
> > builder
> > provided.
> > USB WLAN can work properly in USB port of PXA270 directly. But if I
> > connect
> > one USB Hub then plug USB mouse, USB keyboard and USB WLAN in Hub, the USB
> > WLAN will fail. Situation is show unknown device. I find the order 3rd USB
> > device in USB hub will fail once this WLAN device exist. If only two USB
> > device (USB WLAN and USB mouse) in USB Hub, they will work fine. If over 3
> > USB mouse plug in Hub(without WLAN device), they also work fine. WLAN
> > vendor
> > is debugging this issue now, they find WLAN cannot get correct PIPE
> > resource
> > in Hub.
> > I don't revise any USB driver code in MAINSTONEII BSP. Should I debug HCD
> > code ?
> > Or, what is the possible reason ?
> >
> > thanks
> > Rick
>
>
>