1. Technical Field
Embodiments of the present disclosure relates to circuit simulating systems and methods, and more particularly, to a computing device and a method for checking whether any signal transmission line is routed between switching vias of a differential pair in a printed circuit board (PCB) layout.
2. Description of Related Art
Routing any signal transmission line between switching vias of a differential pair in a PCB layout has an undesirable impact on signal integrity. Therefore, it is necessary to ensure that no signal line is thus routed. However, checking whether any signal line is misrouted are often done visually by a technician, which is not only time-consuming, but also error-prone.
The components of the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views.
The disclosure, including the accompanying drawings in which like references indicate similar elements, is illustrated by way of examples and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
The differential pair identifying module 12 includes various software components and/or set of instructions, which may be implemented by the processor 20 to identify differential pairs in one currently run PCB layout 50 according to the types of signal transmission lines defined in the information file for the currently run PCB layout 50.
The checking module 13 includes various software components and/or set of instructions, which may be implemented by the processor 20 to check whether any signal transmission line is routed between the switching vias of each differential pair according to the information file for the currently run PCB layout. In this embodiment, the checking module 12 is implemented by the processor 20 to identify the switching vias belonging to each differential pair according to the information for determining which via each signal transmission line is connected to, and determine whether any signal transmission line is routed between the switching vias of each differential pair according to the information for determining whether any transmission line is routed between vias.
The display control module 14 includes various software components and/or set of instructions, which may be implemented by the processor 20 to display a routing error window 60 (see
The marking module 15 includes various software components and/or set of instructions, which may be implemented by the processor 20 to mark each misrouted signal transmission signal line in the currently displayed PCB layout, for example, highlight the misrouted signal transmission signal line in the currently displayed PCB layout.
In block S401, the differential pair identifying module 12 is implemented by the processor 20 to identify differential pairs in one currently run PCB layout 50 according to the types of signal transmission lines defined in the information file for the currently run PCB layout 50.
In block S403, the checking module 13 is implemented by the processor 20 to check whether any signal transmission line is routed between the switching vias of each differential pair according to the information file for the currently run PCB layout.
In block S405, the display control module 14 is implemented by the processor 20 to display the routing error window 60 on the display unit 40.
In block S407, the marking module 15 is implemented by the processor 20 to mark each misrouted signal transmission signal line in the currently displayed PCB layout.
Although certain inventive embodiments of the present disclosure have been specifically described, the present disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the present disclosure without departing from the scope and spirit of the present disclosure.
Number | Date | Country | Kind |
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2011 1 0420837 | Dec 2011 | CN | national |
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