Electronic digital logic circuitry – Multifunctional or programmable – Significant integrated structure – layout – or layout...
Reexamination Certificate
2005-06-07
2005-06-07
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Significant integrated structure, layout, or layout...
C326S041000, C326S038000
Reexamination Certificate
active
06903575
ABSTRACT:
An architecture is disclosed to provide high-speed input/output interface capabilities for programmable devices. One or more configurable input/output circuits are situated between the input/output drivers and the programmable core circuitry of the programmable device. The input/output circuits are optimized for the high-speed requirements of the input/output interface standards, with each input/output circuit configurable to support numerous, different input/output interface standards. The programmable core circuitry may be utilized to support the lower-speed requirements of the input/output interface standards.
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patent: 6426649 (2002-07-01), Fu et al.
patent: 6483343 (2002-11-01), Faith et al.
patent: 6608500 (2003-08-01), Lacey et al.
patent: 6674303 (2004-01-01), Morse et al.
U.S. Appl. No. 10/425,862, filed Apr. 28, 2003, entitled “Programmable And Fixed Logic Circuitry For High-Speed Interfaces”.
Davidson Allan T.
Singh Satwant
Chang Daniel
Lattice Semiconductor Corporation
MacPherson Kwok & Chen & Heid LLP
Michelson Greg J.
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