-- packet ID 1100 is both PRE and ERR ?
Here what I have found regarding this:
* PRE Is issued to hubs by the host to indicate that the
next packet is low speed.
* ERR: Returned by a hub to report an error in a split
transaction. (HS Only)
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...