Predicting induced crosstalk for the pins of a programmable...

Details Predicting induced crosstalk for the pins of a programmable... Predicting induced crosstalk for the pins of a programmable...

2011-05-24

2011-05-24

Lin, Sun J (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Integrated circuit design processing

Physical design processing

C716S106000, C716S111000, C716S136000

Reexamination Certificate

active

07949979

ABSTRACT:
Induced crosstalk is predicted for the input/output pins of a programmable logic device. Signal edge rates for the input/output pin are determined from selected interface protocols for the input/output pins. For each pair of the input/output pins, a first coupling coefficient specifies a coupling between the pair of input/output pins within a package for mounting the programmable logic device to a printed circuit board. A depth is input for each via coupled to an input/output pin by the printed circuit board. From the via depths, a second coupling coefficient is determined for each pair of the input/output pins that satisfy a separation criterion. For each of the input/output pins, a predicted value of an induced crosstalk is determined from the first and second coupling coefficients for each pair that includes the input/output pin and another input/output pin, and from the signal edge rate of this other input/output pin.

REFERENCES:
patent: 6429715 (2002-08-01), Bapat et al.
patent: 7013452 (2006-03-01), Baras et al.
patent: 7132847 (2006-11-01), Wong et al.
patent: 7275193 (2007-09-01), Verma
patent: 7298229 (2007-11-01), Ruelke
patent: 2004/0188138 (2004-09-01), Baras et al.

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