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Bus quieting circuits, systems and methods

  • US 5,666,497 A
  • Filed: 10/03/1996
  • Issued: 09/09/1997
  • Est. Priority Date: 03/08/1995
  • Status: Expired due to Term
First Claim
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1. An electronic wiring board article of manufacture comprising:

  • a printed wiring board having a substantially insulative planar board element, conductors in or on said board element; and

    an integrated circuit mounted on said printed wiring board comprising;

    a data source supplying data and successive valid data control signals, wherein transitions occur in the data during intervals between said valid data control signals;

    a source of at least one quieting control signal independent of said valid data control signals;

    a selector having a first input connected to said data source, and a second input, and an output;

    a circuit connected to said output of said selector to receive data from said data source via said selector; and

    a source of a quieting signal connected to said second input, and said selector responsive to said at least one quieting control signal to select said quieting signal during at least a portion of the interval between said valid data control signals, and to select said data source in response to at least some of said valid data control signals.

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