Electrical computers and digital processing systems: support – Computer power control – Power conservation
Patent
1997-05-05
2000-01-11
Chan, Eddie P.
Electrical computers and digital processing systems: support
Computer power control
Power conservation
711141, G06F 110
Patent
active
060147512
ABSTRACT:
A method and apparatus for operating an integrated in a reduced-power consumption state are described. The apparatus comprises power-reduction logic which, to place the integrated circuit in the reduced-power consumption state, gates a clock signal to both first and second sets of functional units within the integrated circuit. The first set of functional units is distinguished in that it is required to perform cache coherency operations within integrated circuit. The apparatus includes an input which is coupled to receive a signal indicating a memory access, to a memory resource accessible by the integrated circuit, by a further device external to the integrated circuit. In response to the assertion of this signal, the power-reduction logic propagates the clock signal to the first set of functional units, to enable this set of functional units to perform a cache coherency operation which may be necessitated by the memory access by the external device.
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patent: 5632037 (1997-05-01), Maher et al.
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patent: 5737746 (1998-04-01), Hardin et al.
Chung Chih-Hung
Eakambaram Ravi
Horigan John
Kardach James P.
Nakanishi Tosaku
Chan Eddie P.
Intel Corporation
Nguyen Hiep T.
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