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Driver Supporting Multiple Signaling Modes

  • US 20110316590A1
  • Filed: 05/07/2010
  • Published: 12/29/2011
  • Est. Priority Date: 05/07/2009
  • Status: Active Grant
First Claim
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1. A driver, comprising:

  • a circuit having complementary drive elements to, in a differential mode, transmit one input signal over a pair of complementary signal lines;

    at least one drive control circuit for the complementary drive circuits to, in a single ended mode, decouple the complementary drive elements to enable separate drive of independent input signals over respective ones of the complementary signal lines;

    at least one path coupling the complementary drive elements to a reference node in the single ended mode; and

    an impedance control circuit to change an impedance provided by the at least one path at times when the independent input signals are simultaneously driven to a common value.

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