Patent ID: 7111183
Filing Date: 2006-09-19
Classification: G06F

Abstract:
1. A method of synchronizing the operation of a plurality of discrete power sequencing controllers, comprising: providing at least first and second power sequencing controllers, each controller operable to assert a power-on reset (POR) signal while powering up for operation and to de-assert the POR signal when the controller is ready for operation; sensing the POR signals of the controllers; and releasing the controllers for operation substantially synchronously after the POR signals of all of the controllers are de-asserted, wherein a POR terminal of the first controller and an output terminal of the first controller are coupled to an input terminal of the second controller, and sensing the POR signals of the controllers includes sensing a composite signal comprised of the POR signal of the first controller and an output signal of the first controller, the output signal derived from the POR signal of the second controller.