Patent ID: 6759909
Filing Date: 2004-07-06
Classification: G06F

Abstract:
Apparatus comprising:a plurality of proximate devices each having: an inter-device link which provides inter-device communication between each proximate device and said plurality of proximate devices; a programmable frequency clock; and a clock frequency controller which operates in a master operating mode and a slave operating mode and which couples said inter-device link and said programmable frequency clock and controls the frequency of said programmable frequency clock by: (a) detecting a master operating mode and performing one of: maintaining the current operating frequency as the master operating frequency; and setting the frequency of said programmable frequency clock to a predetermined master operating frequency; and (b) detecting a slave operating mode and: (b1) receiving a frequency modify command indicating a desired operating frequency wherein the frequency modify command is initiated by a proximate device operating in the master operating mode and wherein the frequency modify command is coupled through said inter-device link; (b2) ascertaining a difference in the desired operating frequency and a current operating frequency; and (b3) setting the frequency of said programmable frequency clock to the desired operating frequency when the difference is ascertained.