System and method for on-board diagnostics of memory modules
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United States of America Patent
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Apr 7, 2009
Grant Date -
Jan 17, 2008
app pub date -
Sep 17, 2007
filing date -
Aug 19, 2003
priority date (Note) -
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Abstract
A memory hub includes an on-board diagnostic engine through which diagnostic testing and evaluation of the memory system can be performed. The memory hub includes a link interface for receiving memory requests for access to memory devices of the memory system and a memory device interface coupled to the memory devices for coupling memory requests to the memory devices. A memory hub diagnostic engine is coupled through a switch to the link interface and the memory device interface to perform diagnostic testing of the memory system. The diagnostic engine includes a maintenance port that provides access to results of the diagnostic testing and through which diagnostic testing commands can be received.
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