Patents Represented by Attorney Fiala & Weaver

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  • Clock switch for generation of multi-frequency clock signal
    Patent number: 7471120
    Abstract: An improved clock switch in an integrated circuit chip that multiplexes two asynchronous clock signals to generate a multi-frequency clock signal in a manner that avoids glitches on the clock output line and meta-stable states within the switch. The clock switch does not include a cross-coupled feedback loop, thus rendering the clock switch test-friendly and avoiding potential race conditions in the switch. The clock switch is useable with asynchronous clock sources having a variety of different clock frequencies and phases.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 30, 2008
    Assignee: Broadcom Corporation
    Inventor: Wenkwei Lou