Applied Micro Circuits Corporation

Jonathan Showell

Guy Jacque Fortier

Circuit and method for resetting clock circuitry. The circuit includes a chain of cascading units, each of which receives an input of a number of parallel bit streams and outputs a different number of parallel bit streams. A chain of dividers provides one or more divided clock signals to the cascading units, wherein the divided clock signals are based on a gated common clock signal. An asynchronous reset signal is delivered to the dividers, and when asserted sets the dividers to a reset state. A clock source provides an ungated common clock signal. A clock gating circuit generates the gated common clock signal based on the ungated common clock signal, and is configured to hold the gated common clock signal while the asynchronous reset signal is asserted. The clock gating circuit provides the gated common clock signal to the dividers when the asynchronous reset signal is de-asserted.

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Ottawa, Canada

Jonathan Showell