Adaptive voltage scaling clock generator for use in a...

Details Adaptive voltage scaling clock generator for use in a... Adaptive voltage scaling clock generator for use in a...

2005-09-13

2005-09-13

Cottingham, John R. (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Reexamination Certificate

active

06944780

ABSTRACT:
There is disclosed clock control circuitry for selectively applying a clock signal to a digital processing component wherein the clock signal is capable of being changed to a plurality of operating frequencies. The clock control circuitry is operable to (i) receive a command to change a first operating frequency to a second operating frequency, (ii) in response to the command, disable the applied clock signal, (iii) generate a test clock signal having the second operating frequency, (iv) apply the test clock signal to a power supply adjustment circuit, and (v) sense a status signal from the power supply adjustment circuit. The status signal indicates that a power supply level of the digital processing component has been adjusted to an optimum value suitable for the second operating frequency.

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patent: WO 01/35200 (2001-05-01), None

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