Electronic digital logic circuitry – Multifunctional or programmable – Sequential or with flip-flop
Reexamination Certificate
2007-04-17
2007-04-17
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Sequential or with flip-flop
C365S240000, C365S189120, C365S221000
Reexamination Certificate
active
11027848
ABSTRACT:
Methods and circuitry for implementing high speed first-in first-out (FIFO) structures. In one embodiment, a FIFO is disclosed that allows the frequency of one clock, e.g., the write clock, to be different than (e.g., half) that of the other (read) clock. In another embodiment a FIFO is presented that can be set and/or reset asynchronously. Other embodiments are disclosed wherein the read and write pointers are effectively monitored to ensure proper timing relationship, to detect loss of clock as well as to detect other abnormal FIFO conditions.
REFERENCES:
patent: 4423482 (1983-12-01), Hargrove et al.
patent: 4803654 (1989-02-01), Rasberry et al.
patent: 4903242 (1990-02-01), Hamaguchi et al.
patent: 5138637 (1992-08-01), Fox
patent: 5388238 (1995-02-01), McHarg et al.
patent: 5467464 (1995-11-01), Oprescu et al.
patent: 5473756 (1995-12-01), Traylor
patent: 5506809 (1996-04-01), Csoppenszky et al.
patent: 5587672 (1996-12-01), Ranganathan et al.
patent: 5761735 (1998-06-01), Huon et al.
patent: 5809557 (1998-09-01), Shemla et al.
patent: 5901100 (1999-05-01), Taylor
patent: 6055285 (2000-04-01), Alston
patent: 6098139 (2000-08-01), Giacobbe et al.
patent: 6101329 (2000-08-01), Graef
patent: 6218860 (2001-04-01), Lytle et al.
patent: 6242953 (2001-06-01), Thomas
patent: 6327207 (2001-12-01), Sluiter et al.
patent: 6493794 (2002-12-01), Yamashita
patent: 54084471 (1979-07-01), None
Cao Jun
Chung David
Hairapetian Armond
Momtaz Afshin
Wang Xin
Broadcom Corporation
Chang Daniel
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