Electronic digital logic circuitry – Multifunctional or programmable
Reexamination Certificate
2005-09-06
2005-09-06
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
C326S040000, C365S221000
Reexamination Certificate
active
06940306
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.
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Cao Jun
Chung David
Hairapetian Armond
Momtaz Afshin
Wang Xin
Broadcom Corporation
Chang Daniel
Christie Parker & Hale LLP
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