Marvell Israel (misl) Ltd.

Yiftach Banai

Ido Bourstein

Gil Stoler

Reuven Ecker

A clock generator is disclosed that includes a lock detector. The lock detector is configured to generate a lock signal based on control signals of a phase lock loop circuit that generates an output clock of a desired frequency that is phase locked to a reference clock. The lock detector generates a mismatch signal based on a comparison between the phases of the reference clock and the output clock to generate a compare result. The lock detector delays the compare result by a time period Tand AND the delayed compare result with the compare result to generate the mismatch signal. The lock detector includes a lock-counter that counts a number of reference clock cycles when the mismatch signal remains at 0. The lock signal indicates that a lock-state is achieved when the number of counted reference clock cycles equals a set-value.

Method and apparatus for clock generator lock detector

An apparatus and method are disclosed for generating one or more clock signals. A clock signal is generated based on pattern signals and a reference clock signal. When the reference clock signal transitions high, the state of a first pattern signal is output, and when the reference clock signal transitions low, the state of a second pattern signal is output. Successive states of the first and second pattern signals, selected according to the reference clock signal, provide the generated clock signal.

Apparatus and method for generating a clock signal

A apparatus and method are disclosed for generating one or more clock signals. A clock signal is generated based on pattern signals and a reference clock signal. When the reference clock signal transitions high, the state of a first pattern signal is output, and when the reference clock signal transitions low, the state of a second pattern signal is output. Successive states of the first and second pattern signals, selected according to the reference clock signal, provide the generated clock signal.

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Modiin, Israel

Yiftach Banai