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Resistor/Capacitor Based Identification Detection

  • US 20080042701A1
  • Filed: 07/24/2006
  • Published: 02/21/2008
  • Est. Priority Date: 07/24/2006
  • Status: Active Grant
First Claim
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1. A system for providing host system identification, the system comprising:

  • a pin configured to couple to a first circuit having a time constant;

    a second circuit configured to compare a first voltage value with a pin voltage developed at the pin, and to generate a first signal indicative of whether the pin voltage has reached the first voltage value; and

    a third circuit operable to store a numeric value corresponding to the time constant, responsive to the first signal indicating that the pin voltage has reached the first voltage value;

    wherein the numeric value corresponds to identification information of a host system comprising the system.

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