CLOCK AND POWER FAULT DETECTION FOR MEMORY MODULES

  • US 20100211765A1
  • Filed: 04/29/2010
  • Published: 08/19/2010
  • Est. Priority Date: 10/25/2006
  • Status: Active Grant
First Claim
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1. A method for maintaining memory contents in a volatile memory of a memory module, wherein the memory module is coupled with a computer system, the method comprising:

  • detecting a clock status in the memory module;

    operating a memory module controller having a memory control state machine to receive the detected clock status and to change states based on the detected clock status;

    generating a memory module internal clock to provide a memory module integrated backup clock; and

    operating a clock multiplexer to receive the memory module integrated backup clock and an external system clock and to provide a memory module clock selected from the module integrated backup clock and the external system clock.

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