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US 2003/0145170 A1Published application
Dynamically adjusted cache power supply to optimize for cache access or power consumption
OwnerWayne D. Keverinventor
Life of this patent
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Abstract
A system and method for optimizing the power consumption or the access time of a subdivided cache memory system is described. An adjustable voltage power supply provides power to a section of a subdivided cache. The voltage to this section may be increased, yielding a faster access time. The voltage to this section may also be decreased. Decreasing the voltage to this section decreases the power consumed by the cache memory system.
Claims5
1) A cache memory system comprising:
- a first cache memory;
- a second cache memory;
- an adjustable voltage power supply electrically connected to said first cache memory;
- a first tag electrically connected to said first cache memory;
- a second tag electrically connected to said first and said second cache memories;
- wherein said first cache memory is a subset of said second cache memory;
- wherein said first tag controls said first cache memory and said second tag controls said first and said second cache memories.
4 more elements
4) A method of reducing power consumed by a subdivided cache memory system comprising:
- fabricating an adjustable voltage power supply;
- fabricating a first tag and a second tag;
- fabricating a first cache memory;
- wherein a second cache memory is a subset of said first cache memory;
- wherein said second tag controls said second memory and said first tag controls said first and said second cache memories;
- wherein said adjustable voltage power supply is electrically connected to said second cache memory;
- wherein said adjustable voltage power supply lowers voltage applied to said second cache memory.
4 more elements
5) A method of decreasing access time in a subdivided cache memory system comprising:
- fabricating an adjustable voltage power supply;
- fabricating a first tag and a second tag;
- fabricating a first cache memory;
- wherein a second cache memory is a subset of said first cache memory;
- wherein said second tag controls said second memory and said first tag controls said first and said second cache memories;
- wherein said adjustable voltage power supply is electrically connected to said second cache memory;
- wherein said adjustable voltage power supply raises voltage applied to said second cache memory.
4 more elements
Dependencies are inferred from the claim text.