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Identifying and accessing individual memory devices in a memory channel

  • US 7,872,892 B2
  • Filed: 07/05/2005
  • Issued: 01/18/2011
  • Est. Priority Date: 07/05/2005
  • Status: Active Grant
First Claim
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1. In a memory module with a plurality of memory integrated circuits providing a Unified Memory Architecture (UMA), each of the plurality of memory integrated circuits having at least two pins to couple information into each of the memory integrated circuits, method comprising:

  • setting values of at least two identity bits respectively onto the at least two pins of each memory integrated circuit of the UMA;

    receiving the at least two identity bits into each memory integrated circuit of the UMA as an identity value;

    using a data qualifier to individually program each of the memory integrated circuits with the at least two identity bits, wherein accesses into each memory integrated circuit are micro-tile memory accesses utilizing at least the two identity bits, wherein the micro-tile memory accesses comprise independent sub-channel memory accesses into the at least one memory integrated circuit;

    retrieving data from at least one of the memory integrated circuits via the independent sub-channel memory accesses; and

    returning a cache line having the retrieved data, wherein the retrieved data comprises data from discontiguous memory locations as a single cache line.

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