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Semiconductor integrated circuit with termination circuit

  • US 20040004494A1
  • Filed: 01/13/2003
  • Published: 01/08/2004
  • Est. Priority Date: 07/05/2002
  • Status: Active Grant
First Claim
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1. A semiconductor integrated circuit comprising:

  • a termination circuit for terminating a bus line;

    an impedance control circuit for controlling an impedance of the termination circuit depending on an impedance of an external reference resistance, so as to have the same or substantially the same impedance as that of the external reference resistance; and

    a detection circuit for detecting whether the external reference resistance is electrically connected to the semiconductor integrated circuit and disabling the impedance control circuit depending on a detection result.

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