Figure 2-53. Usb Differential Signal Routing Example - VIA Technologies Apollo Pro133A Design Manual

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The layout guidelines for USB are listed below.
•
Each pair of USB data signals is required to be parallel to each other with the same trace length.
•
Each pair of USB data signals is required to be parallel to a respective ground plane.
A routing example of two pairs of USB data buses is shown in figure 2-53 below.
Preliminary Revision 0.5, November 19, 1999
Design Guide - VT82C694X Apollo Pro133 with VT82C686A
VT82C686A
Recommended
(South Bridge)
USBP0+
USBP0-
USBP1+
USBP1-

Figure 2-53. USB Differential Signal Routing Example

60
USB0
Connector
Not recommended
USB1
Connector
Motherboard Design Guidelines