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Message
From: "M Dennis" <mdennis97@h...>
Date: Mon, 28 Apr 2003 05:11:54 -1000
Subject: [usb] question about usb hub remote wakeup resume signaling
hi, all
I am confused by Figure 11-10 of usb 1.1 spec. on page 254. Any answer will
be appriciated sincerely.
My question is about the reflection of Hub B:
the device drived the resume at t0. According to the spec.,after100us,Hub B
will drive resume on all of its enabled upstream and downstrem ports
including the port that initiated the resume signaling.That is,the usb D+
and D- will be drived by Hub B and the device simultaneously between t1 and
t3.This will be a severe conflict on this shared bus!?
I cannot understand this by myself.Please Help!
Regards
M.Dennis
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