Dummy accesses to ensure CPU exits lower-power state

Details Dummy accesses to ensure CPU exits lower-power state Dummy accesses to ensure CPU exits lower-power state

2011-08-02

2011-08-02

Phan, Raymond (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C713S320000

Reexamination Certificate

active

07991939

ABSTRACT:
Circuits, methods, and apparatus that provide transactions to wake an external device from a low-power state before a data transfer. This prevents an interruption that would be caused if the external device exited the low-power state during the data transfer. One example monitors a need for data by a first device. At a predetermined time before data is needed, the first device sends a transaction to a second device. The transaction is intended to wake the second device from a low-power state. If the first device has information to indicate that the second device is not in a low-power state, this transaction can be skipped. The first device then requests data. Later transactions to the second device do not result in the second device exiting the low-power state and therefore do not interrupt or cause delays in the data transfer.

REFERENCES:
patent: 6000035 (1999-12-01), Matsushima et al.
patent: 6751741 (2004-06-01), Kawahara et al.
patent: 6801974 (2004-10-01), Watts et al.
patent: 7126608 (2006-10-01), Alben et al.
patent: 7256788 (2007-08-01), Luu et al.
patent: 7515935 (2009-04-01), Ibrahim et al.
patent: 7523327 (2009-04-01), Cline et al.
patent: 7634668 (2009-12-01), White et al.
patent: 7774629 (2010-08-01), Huang et al.

Affiliated with

Also associated with

Rating

Dummy accesses to ensure CPU exits lower-power state does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dummy accesses to ensure CPU exits lower-power state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dummy accesses to ensure CPU exits lower-power state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2776884