Patent ID: 7382639

Claim:
A memory module, comprising: an insulative substrate; a plurality of memory devices mounted on the substrate, each memory device comprising: a semiconductor substrate; and a plurality of electrical input and output signal lines fabricated on the semiconductor substrate including electrical data signal lines operable to output electrical read data signals and input electrical write data signals, and electrical address and control signal lines operable to input electrical address and control signals; a memory hub mounted on the insulative substrate, the memory hub having an optical input/output port and a plurality of electrical input and output terminals including terminals outputting electrical write data signals, terminals inputting electrical read data signals, and terminals outputting electrical command and address signals, the memory hub being operable to receive optical input signals coupled to the input/output port and to apply corresponding electrical signals to the terminals of the memory hub, the memory hub being further operable to receive electrical signals at the terminals of the memory hub and to apply optical output signals to the input/output port; and a plurality of signal paths coupling the terminals of the memory hub to the data, address and control signal lines on the memory devices.