Patent ID: 7289830

Claim:
A method for establishing communication between a communication protocol controller and a main controller, the method comprising: monitoring a communication bus using a power management device wherein the communication bus is electrically coupled to a communication protocol controller, the power management device, and a main controller residing in an initial low power mode and having a processor and a data storage device; determining when the communication protocol controller is attempting to communicate with the main controller; generating a wake-up signal in response to the attempted communication; presenting the wake-up signal to the processor of the main controller, wherein the main controller enters a wake-up mode in response to the wake-up signal; reading at least one communication protocol configuration parameter from the data storage device, wherein the at least one configuration parameter is read by the main controller in response to the wake-up signal; and initiating communication between the main controller and the communication protocol controller using the at least one communication protocol configuration parameter such that communication between the communication protocol controller and a communication protocol enabled device is maintained.