Dynamically changing PCI clocks

Details Dynamically changing PCI clocks Dynamically changing PCI clocks

2005-09-08

2008-11-25

Elamin, Abdelmoniem (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S310000, C713S320000, C713S321000, C713S323000, C713S330000, C713S340000

Reexamination Certificate

active

07457974

ABSTRACT:
A method, apparatus and computer-usable medium are presented for dynamically selecting a clock signal used by a peripheral device that is coupled to a motherboard. When the motherboard is powered off, a clock selector sends the peripheral device an internal clock signal from the peripheral device's own internal clock controller. When the motherboard powers up, the clock selector sends the peripheral device an external clock signal from the motherboard.

REFERENCES:
patent: 4984195 (1991-01-01), Nakamura et al.
patent: 5517460 (1996-05-01), Yamaguchi
patent: 5907699 (1999-05-01), Nakajima
patent: 6665316 (2003-12-01), Eidson
patent: 6937082 (2005-08-01), Ishimi
patent: 6978389 (2005-12-01), Jahnke
patent: 2003/0079152 (2003-04-01), Triece

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