Clock ratio controller for dynamic voltage and frequency...

Details Clock ratio controller for dynamic voltage and frequency... Clock ratio controller for dynamic voltage and frequency...

2007-12-12

2011-11-01

Tran, Vincent (Department: 2115)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Correction for skew, phase, or rate

C713S400000, C713S500000, C327S156000, C327S158000

Reexamination Certificate

active

08051320

ABSTRACT:
The present invention provides a clock ratio controller for dynamic voltage and frequency scaled digital systems, and applications thereof. In an embodiment, a digital system is provided that includes a first digital circuit that operates at a first rate determined by a first clock signal and a second digital circuit that operates at a second rate determined by a second clock signal. The first digital circuit is coupled to the second digital circuit by a bus that is used for communications between the first digital circuit and the second digital circuit. A clock ratio controller is used to adjust the frequency of the first clock signal and/or the second clock signal in response to a power management signal without causing a loss of synchronization between the first digital circuit and the second digital circuit.

REFERENCES:
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