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1. WO2009004330 - CLOCK FREQUENCY ADJUSTMENT FOR SEMI-CONDUCTOR DEVICES

Publication Number WO/2009/004330
Publication Date 08.01.2009
International Application No. PCT/GB2008/002265
International Filing Date 30.06.2008
IPC
G06F 1/32 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/-G06F13/82
26Power supply means, e.g. regulation thereof
32Means for saving power
G06F 1/08 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/-G06F13/82
04Generating or distributing clock signals or signals derived directly therefrom
08Clock generators with changeable or programmable clock frequency
CPC
G06F 1/04
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
04Generating or distributing clock signals or signals derived directly therefrom
G06F 1/08
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
04Generating or distributing clock signals or signals derived directly therefrom
08Clock generators with changeable or programmable clock frequency
G06F 1/3203
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
26Power supply means, e.g. regulation thereof
32Means for saving power
3203Power management, i.e. event-based initiation of power-saving mode
G06F 1/3237
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
26Power supply means, e.g. regulation thereof
32Means for saving power
3203Power management, i.e. event-based initiation of power-saving mode
3234Power saving characterised by the action undertaken
3237by disabling clock generation or distribution
G06F 1/324
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
1Details not covered by groups G06F3/00G06F13/00 and G06F21/00
26Power supply means, e.g. regulation thereof
32Means for saving power
3203Power management, i.e. event-based initiation of power-saving mode
3234Power saving characterised by the action undertaken
324by lowering clock frequency
H04L 7/0008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
0008Synchronisation information channels, e.g. clock distribution lines
Applicants
  • IMAGINATION TECHNOLOGIES LIMITED [GB]/[GB] (AllExceptUS)
  • ROWLAND, Paul [GB]/[GB] (UsOnly)
Inventors
  • ROWLAND, Paul
Agents
  • ROBSON, Aidan, John
Priority Data
0712788.929.06.2007GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CLOCK FREQUENCY ADJUSTMENT FOR SEMI-CONDUCTOR DEVICES
(FR) AJUSTEMENT DE FRÉQUENCE D'HORLOGE POUR DES DISPOSITIFS À SEMICONDUCTEUR
Abstract
(EN)
A method and apparatus are provided for clocking data processing modules, which require differing average clock frequencies, and for transferring data between the modules. This comprises a means for providing a common clock signal to modules. Clock pulses are deleted from the common clock signal to individual modules in dependence on the clocking frequency required by each module. Clock pulses are applied to modules between which data is to be transferred at times consistent with the data transfer.
(FR)
L'invention concerne un procédé et un appareil permettant de synchroniser des modules de traitement de données, lesquels nécessitent des fréquences moyennes d'horloge différentes et destinés à transférer les données entre les modules. Ceci comprend un moyen pour appliquer un signal commun d'horloge aux modules. Les impulsions d'horloge sont supprimées du signal commun d'horloge pour des modules individuels dépendant de la fréquence de synchronisation requise par chaque module. Les impulsions d'horloge sont appliquées sur des modules entre lesquels les données doivent être transférées à des instants cohérents avec le transfert de données.
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