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Reversible AUI port for ethernet

  • US 5,568,515 A
  • Filed: 05/16/1995
  • Issued: 10/22/1996
  • Est. Priority Date: 02/21/1995
  • Status: Expired due to Term
First Claim
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1. A reversible Control In line driver, comprising:

  • a first and a second current driver, each current driver coupled between a first reference voltage and a second reference voltage, for driving a differential output signal on a first output and a second output, wherein said first output is coupled to said first current driver and said second output is coupled to said second current driver; and

    a differential driver, coupled to said current drivers and responsive to an input differential signal, a transmit signal, and a REV-- EN signal, for;

    driving said output differential signal from said outputs responsive to said input differential signal when said transmit signal is asserted and said REV-- EN signal is deasserted, otherwiseactivating each said current driver when said transmit signal and said REV-- EN signal are deasserted; and

    otherwisedeactivating each current driver when said REV-- EN signal is asserted.

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