Parallel data communication consuming low power

Details Parallel data communication consuming low power Parallel data communication consuming low power

2005-02-22

2005-02-22

Butler, Dennis M. (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C370S464000, C710S305000

Reexamination Certificate

active

06859883

ABSTRACT:
In one example embodiment involving a high-speed parallel-data communication from a first module to a second module, a termination circuit is adapted to reduce power consumption at the second module. The termination circuit includes resistive circuits respectively coupled to a plurality of parallel data-carrying lines that form the data bus. The other ends of the resistive circuits are interconnected to provide a reference voltage using the data on the parallel data-carrying lines. Consistent with one embodiment of the present invention, the communication approach uses data sets encoded so that each data set includes the same number of ones and zeroes; in this manner the reference voltage is always at midpoint and useful in providing termination to the data-carrying lines at all times.

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Canright, Practical Design for Controlled Impedence, 1991, IEEE, pp. 370-377.

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