Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2006-10-17
2006-10-17
Cho, James H. (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S037000, C365S233100
Reexamination Certificate
active
07123051
ABSTRACT:
The present invention is directed to a soft core logic circuit implemented in a PLD that estimates an appropriate phase delay and applies the phase shift to a read strobe signal to align its rising and falling edges at the center of a data sampling window associated with a group of read data signals. The soft core logic circuit dynamically determines an appropriate phase-shift value for the read strobe signal and adjusts the phase-shift to accommodate the environmental changes. The soft core logic circuit also introduces into the PLD various intermediate signals from a phase-shift estimator and a programmable phase delay chain.
REFERENCES:
patent: 5223755 (1993-06-01), Richley
patent: 5555214 (1996-09-01), Sung et al.
patent: 5633830 (1997-05-01), Sung et al.
patent: 5764080 (1998-06-01), Huang et al.
patent: 5802540 (1998-09-01), Sung et al.
patent: 5828229 (1998-10-01), Cliff et al.
patent: 5970255 (1999-10-01), Tran et al.
patent: 5978281 (1999-11-01), Anand et al.
patent: 6002282 (1999-12-01), Alfke
patent: 6011744 (2000-01-01), Sample et al.
patent: 6044122 (2000-03-01), Ellersick et al.
patent: 6049255 (2000-04-01), Hagberg et al.
patent: 6061292 (2000-05-01), Su et al.
patent: 6100713 (2000-08-01), Kalb et al.
patent: 6128692 (2000-10-01), Sung et al.
patent: 6140854 (2000-10-01), Coddington et al.
patent: 6147520 (2000-11-01), Kothandaraman et al.
patent: 6150863 (2000-11-01), Conn et al.
patent: 6157690 (2000-12-01), Yoneda
patent: 6178212 (2001-01-01), Akashi
patent: 6212113 (2001-04-01), Maeda
patent: 6212127 (2001-04-01), Funaba et al.
patent: 6236231 (2001-05-01), Nguyen et al.
patent: 6252419 (2001-06-01), Sung et al.
patent: 6269051 (2001-07-01), Funaba et al.
patent: 6279073 (2001-08-01), McCracken et al.
patent: 6295245 (2001-09-01), Tomita et al.
patent: 6316980 (2001-11-01), Vogt et al.
patent: 6342796 (2002-01-01), Jung
patent: 6346843 (2002-02-01), Takahashi
patent: 6351165 (2002-02-01), Gregorian et al.
patent: 6351166 (2002-02-01), Hashimoto
patent: 6356509 (2002-03-01), Abdel-Hafeez et al.
patent: 6400197 (2002-06-01), Lai et al.
patent: 6442102 (2002-08-01), Borkenhagen et al.
patent: 6445642 (2002-09-01), Murakami et al.
patent: 6466491 (2002-10-01), Yanagawa
patent: 6472904 (2002-10-01), Andrews et al.
patent: 6492852 (2002-12-01), Fiscus
patent: 6504790 (2003-01-01), Wolford
patent: 6509776 (2003-01-01), Kobayashi et al.
patent: 6525565 (2003-02-01), Young et al.
patent: 6525585 (2003-02-01), Lida et al.
patent: 6570944 (2003-05-01), Best et al.
patent: 6577694 (2003-06-01), Meghelli
patent: 6690201 (2004-02-01), Simking et al.
patent: 6798241 (2004-09-01), Bauer et al.
patent: 6806733 (2004-10-01), Pan et al.
patent: 6816991 (2004-11-01), Sanghani
patent: 6864710 (2005-03-01), Lacey et al.
patent: 6864715 (2005-03-01), Bauer et al.
patent: 6940768 (2005-09-01), Dahlberg et al.
patent: 6946872 (2005-09-01), Pan et al.
U.S. Appl. No. 10/037,861, filed Jan. 2, 2002, Chong, et al.
U.S. Appl. No. 10/799,408, filed Mar. 12, 2004, Chong, et al.
U.S. Appl. No. 10/799,409, filed Mar. 12, 2004, Johnson.
Johnson Brian D.
Lee Andy L.
Altera Corporation
Cho James H.
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