Power saving in FPU with gated power based on opcodes and data

Details Power saving in FPU with gated power based on opcodes and data Power saving in FPU with gated power based on opcodes and data

2006-11-14

2006-11-14

Du, Thuan (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S322000, C713S330000

Reexamination Certificate

active

07137021

ABSTRACT:
A method and an apparatus are provided for saving power in a microprocessor. The microprocessor has at least one functional unit, which has a plurality of blocks. The blocks each include a plurality of sub-blocks. It is determined whether there is any instruction for the functional unit. Upon a determination that there is no instruction for the functional unit, the functional unit is shut down. Upon a determination that there is at least one instruction for the functional unit, at least one inactive block of the functional unit is shut down based on the instruction.

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