Core voltage controlling apparatus

Details Core voltage controlling apparatus Core voltage controlling apparatus

2007-12-19

2010-12-14

Patel, Nitin C (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C713S320000, C713S330000, C713S340000, C323S281000, C323S282000, C323S283000, C323S284000, C323S285000, C327S376000, C327S377000

Reexamination Certificate

active

07853810

ABSTRACT:
A core voltage controlling apparatus suitable for a center processing unit (CPU) is provided. The apparatus includes a level shifting unit, a time-delay unit and a logic unit. An input terminal of the level shifting unit receives and shifts a first voltage signal, and an output terminal generates a second voltage signal, in which the first voltage signal indicates a power-on stable state, and the second voltage signal indicates a magnitude of the core voltage. The time-delay unit delays the second voltage signal to generate a third voltage signal. The logic unit is coupled to the time-delay unit for performing a logic operation on the third voltage and a fourth voltage signal transmitted by a power supply, and generating a fifth voltage signal for controlling a core voltage generator whether to provide the core voltage to the CPU or not, in which the fourth voltage signal indicates a power state.

REFERENCES:
patent: 4963769 (1990-10-01), Hiltpold et al.
patent: 5175845 (1992-12-01), Little
patent: 5239652 (1993-08-01), Seibert et al.
patent: 7030596 (2006-04-01), Salerno et al.

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