Patent ID: 7336095
Filing Date: 2008-02-26
Classification: G06F,Y04S

Abstract:
1. A method for controlling access to specific modules of an integrated circuit device, comprising: setting a device state for the integrated circuit device in an electrically programmable fuse bank comprising a plurality of electrically programmable fuses, wherein setting a device state comprises blowing a sequence of electrically programmable fuses in the electrically programmable fuse bank to generate a unique device state identifier that is used by a controller to regulate access to the at least one chip register via a communication interface; reading the device state from the electrically programmable fuse bank with the device controller; and disabling modules of the integrated circuit device in accordance with the device state read by the device controller, wherein disabling modules comprises placing the device in a dead device state by at least one of turning off a clock signal to a module, disabling a multiplexer select associated with a module, or disabling an I/O line of the module.