Importance

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Abstract

An interposer interconnecting a first integrated circuit and a second integrated circuit includes active circuitry. The “active” interposer converts high-speed signals into lower-speed, but more parallelized, signals for transmission across the active interposer. The parallelized signals may be buffered or amplified at intervals while crossing the active interposer. The high-speed to low-speed, and back, conversions may be performed by an appropriately configured and controlled multiplexer/demultiplexer circuitry The supply voltages for some interposer circuits may be different than the supply voltages for the interfaces with the first and second integrated circuit. One or more of the interconnected integrated circuits may supply, and/or calibrate the supply voltages for the interposer circuitry. Timing signals provided by one or more of the interconnected integrated circuits may also be calibrated using circuitry on the active interposer.

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First Claim