Apparatus and method for observing the mode of a memory device

  • US 5,892,777 A
  • Filed: 05/05/1997
  • Issued: 04/06/1999
  • Est. Priority Date: 05/05/1997
  • Status: Expired due to Term
First Claim
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1. A method for observing a control register in a memory device, the control register defining an operation of the memory device, the control register not observable from the memory device, the method comprising the steps of:

  • storing a received value in the control register responsive to a first signal;

    outputting the received value responsive to a second control signal when no output is expected from the memory device; and

    disabling the operation of the memory device responsive to the second control signal subsequent to the step of outputting.

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