Setting/driving circuit for use with an integrated circuit logic

Details Setting/driving circuit for use with an integrated circuit logic Setting/driving circuit for use with an integrated circuit logic

1999-04-05

2000-11-14

Butler, Dennis M.

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

713100, G06F 900

Patent

active

061483982

ABSTRACT:
A setting/driving circuit is provided for use in conjunction with an IC logic unit, such as a CPU having one or more multi-function pins, to provide two or more sets of data, such as a set of parameter data and a set of control data, via the same multi-function pins to the CPU. The setting/driving circuit includes a tri-state buffer and a parameter setting unit composed of two resistors and a switch, such as a jumper. When the tri-state buffer is disabled, the parameter data set by the switch is transferred to the multi-function pin of the CPU. On the other hand, when the tri-state buffer is enabled, the input data to the input port of the tri-state buffer is transferred to the multi-function pin of the CPU. The tri-state buffer can be integrated within the chip set without having to increase the total number of pins on the chip set so that the layout complexity on the motherboard can be simpler and thus easier to assemble compared to the prior art. Therefore, the proposed setting/driving circuit is easier and more cost-effective to implement on a computer motherboard than the prior art.

REFERENCES:
patent: 4991085 (1991-02-01), Pleva et al.
patent: 5333307 (1994-07-01), Shirk
patent: 5530620 (1996-06-01), Sangveraphunsiri
patent: 5805401 (1998-09-01), Schuellein et al.
patent: 5951681 (1999-09-01), Chang

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