International Business Machines Corporation

Richard N Wilson

Clarence Rosser Ogilvie

Kenneth Anthony Lauricella

Seetharam Gundurao

Nishant Sharma

James J Tomczak

In a first aspect of the invention, a first method is provided for aligning signals from a first receiver located in a first clock domain to a second receiver located in a second clock domain. The first method includes the steps of creating a programmable delay element between the first and second receivers, and selectively adding delay via the programmable delay element to the signals until the signals are aligned. Numerous other aspects are provided.

Asynchronous interface methods and apparatus

An integrated circuit junction capacitor is formed using conventional bipolar transistor technology. Voltage variable capacitance is provided by a reverse biased emitter-base junction and parasitic collector-base capacitance is isolated from the emitter-base capacitance by maintaining the base-collector junction in a reverse biased condition. A bootstrapped driver circuit is also described in which bootstrap current is provided by a transistor-like structure in which an internal load capacitance enables circuit performance to remain substantially constant under various driven load conditions.

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Shelburne, VT, United States of America

Richard N Wilson