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Revised crosstalk-aware routing offers better optimized design

Posted: 10 Nov 2009 ?? ?Print Version ?Bookmark and Share

Keywords:crosstalk routing? switching? capacitive coupling?

Crosstalk occurs when capacitive coupling between two nets allows a switching transient on one net to inject charge onto the other due to voltage gradient on these nets. In the parlance of the field, these nets are referred to as the aggressor and victim.

The circuit elements defining this transfer of energy is given by the equation I = C * dV/dt.

Here are the factors affecting crosstalk:
? Every net has a Ground Cap value of its own (Cg).
? Cg defines the ability of a net to resist a change in its state.
? Coupling Cap (Cc) defines the ability of a net to bring a change in state of the coupled net.
? Crosstalk Cc/Cg.

View the PDF document for more information.





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