Quoting Dennis Gilmore <[EMAIL PROTECTED]>:

> T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2 
> B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0 
> D:  Ver= 1.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1 
> P:  Vendor=0000 ProdID=0000 Rev= 0.00 
> S:  Product=USB UHCI-alt Root Hub 
> S:  SerialNumber=d800 
> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA 
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub 
> E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=255ms 
> 
> My devices are not accepting the address allocated to them and i notced 
> in the lines c:*  that max power is 0mA i know the hubs have 500mA max
> power  is there a setting i can set to see if this will fix the problem?

There is no problem because 0 mA refers to the power _consumed_ from the
bus by the hub, and root hubs don't need power - they are already on the
main board and receive their power directly from the PC's power source.

If you have a bus-powered hub then you will see something like this:

T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=12  MxCh= 7
D:  Ver= 1.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0451 ProdID=1446 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA

This indicates that the hub itself needs 100 mA to operate.

Dmitri

-- 
The eagle may soar, but the weasel never gets sucked into a jet engine.

Attachment: msg02871/pgp00000.pgp
Description: PGP signature

Reply via email to