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Memory controller for non-homogenous memory system

  • US 7,269,708 B2
  • Filed: 04/20/2004
  • Issued: 09/11/2007
  • Est. Priority Date: 04/20/2004
  • Status: Active Grant
First Claim
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1. A controller, comprising:

  • a first memory interface adapted to be coupled to one or more first memory devices wherein the first memory devices comprise volatile memory devices;

    a second memory interface adapted to be coupled to one or more second memory devices wherein the second memory devices comprise non-volatile memory devices; and

    interface logic coupled to the first and second interfaces and configured to direct memory transactions having a predefined first characteristic to the first memory interface and to direct at least some memory transactions having a predefined second characteristic to the second memory interface, wherein the second characteristic comprises a usage characteristic selected from the group consisting of a read-mostly characteristic and read-only characteristic; and

    wherein the usage characteristic of at least some memory transactions is updated during operation.

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