Method and apparatus to change the operating frequency of...

Details Method and apparatus to change the operating frequency of... Method and apparatus to change the operating frequency of...

2008-01-22

2008-01-22

Cao, Chun (Department: 2115)

Electrical computers and digital processing systems: support

Clock control of data processing system, component, or data...

C713S100000

Reexamination Certificate

active

07321979

ABSTRACT:
A method, apparatus, and computer instructions for changing an operating frequency for a system core logic used to interface to memory in the multi-processor data processing system. A determination is made as to whether the operating frequency should be changed from a default frequency to another frequency. Slave processors are placed in the multi-processor data processing system into a non-transactional mode, in response to determining the operating frequency should be changed from the default operating frequency to the another operating frequency. When the slave processors are in the non-transactional mode, the operating frequency is changed in the system core logic to other operating frequency by the master processor.

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patent: 6643792 (2003-11-01), Kurosawa
patent: 7096377 (2006-08-01), Kumar et al.
patent: 2000020462 (2000-01-01), None
patent: 2001100867 (2001-04-01), None
patent: 2003022145 (2003-01-01), None

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