Distributed time-multiplexed bus architecture and emulation...

Details Distributed time-multiplexed bus architecture and emulation... Distributed time-multiplexed bus architecture and emulation...

2005-10-11

2005-10-11

Pham, Chi (Department: 2663)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S537000, C326S114000, C327S407000

Reexamination Certificate

active

06954451

ABSTRACT:
A time-multiplexed data bus driver circuit includes a plurality of combinatorial circuits, each of the circuits forming a logic combination of a datum value, a datum enable signal and a datum timeslot signal, the plurality of circuits producing a plurality of output signals based thereon, and a wired-OR junction producing a logic OR combination of the plurality of output signals representing a time-multiplexed data stream. Preferably, for each of the combinatorial circuits the enable signal, the timeslot signal and the datum signal (and preferably also a clock signal) are combined in an AND function to produce a gating signal for an active-low datum value, one selected active-low datum value being gated onto the wired-OR junction at a given timeslot when enabled. The common time-multiplexed data channel at the wired-OR junction has a pre-charge circuit for biasing the junction to a positive or ground voltage, thereby representing in an un-driven state a respective logic 1 or 0.

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