Stratacom, Inc.

John D Weisbloom

Frederick R Enns

Charles Matthew Corbalis

Amar S Gupta

Ross S Heitkamp

William Nelson Bedell

A method and apparatus for exchanging communication cells in a communication controller, wherein an arbiter determines transmission requests for each of a plurality of communication modules in the communication controller. Each communication module has a transmit signal line and a receive signal line coupled to a switching circuit in the communication controller. The arbiter selectively couples the transmit signal lines to the receive signal lines according to the transmission requests. The communication modules transmit communication cells through the switching circuit, while the arbiter determines new transmission requests from each communication module.

Broadband switching fabric in a communication controller

A method and apparatus for stably maintaining an output clock signal from a phase-locked loop (PLL) frequency multiplier when switching from one clock source to another clock source is described. This method and apparatus maintains the phase relationship between the external signal to the phase detector and the feedback signal from the divider to the phase detector.

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Los Gatos, CA, United States of America

John D Weisbloom