Energy reduction potential of a phase-based cache resizing scheme for embedded systems

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Submitted on 23 May 2006

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Energy reduction potential of a phase-based cache resizing scheme for embedded systems

Gilles Pokam, François Bodin

To cite this version:

Gilles Pokam, François Bodin. Energy reduction potential of a phase-based cache resizing scheme for embedded systems. [Research Report] RR-5036, INRIA. 2003. �inria-00071548�

ISRN INRIA/RR--5036--FR+ENG

a p p o r t

d e r e c h e r c h e

THÈME 1

INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE

Energy reduction potential of a phase-based cache resizing scheme for embedded systems

Gilles Pokam — François Bodin

N° 5036

Decembre 2003

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concatenationway logic

Tag Index Offset

Address

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2

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drowsy bit

row decoder

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(*),+.- + 0/)1 324+ 5

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Vdd 1V

Vdd 0.3V

drowsy

drowsy power line

wordline gate wordline wordline

precharge gate precharge signal

drowsy mode concatenation mode way-enable

signal

drowsy bit

rowdecoder

to precharge circuit

drowsy signal

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Way 0 Way 1 Way 2 Way 3

@A

Way 0 Way 1 Way 2 Way 3

@A

Phase i+1: 32K 1−way, active bank 1, @A is modified

Phase i: 32K 2−way, active banks 0 and 2, @A is mapped into bank 0

in bank 1

invalidation

@A

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Legend 32KB, 1−way 32KB, 2−way 32KB, 4−way 16KB, 1−way 16KB, 2−way 8KB, 1−way

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