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Message
From: Marc Reinig<mreinig@p...>
Date: Sat Mar 6 18:18:35 CET 2004
Subject: [usb] USB2.0 Hub
That's the job of the USB 2.0 hub, to sort out who gets what.Marc Reinig
System Solutions
-----Original Message-----
From: usb-bounces@o... [mailto:usb-bounces@o...]On
Behalf Of Mohammad AK
Sent: Saturday, March 06, 2004 1:39 AM
To: usb@o...
Subject: [usb] USB2.0 Hub
Hello all ,
there is a question about USB2.0, what happens if we ahd the following
scenario :
a.. USB2.0 Hub connected to USB2.0 Host
b.. two USB Devices connected to the Hub, 2.0 and a 1.1
c.. each one of them should work on it rated speed (i.e. 2.0 will work
at high speed and the 1.1 will be at Full speed)
d.. every 1ms the 1.1 should have a start of frame paket
e.. every 125us the 2.0 should have a start of frame (microframe)
how does the USB deals with every 8 microframes ? ( 8*125us=1ms !! )
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