Patent ID: 7802157
Filing Date: 2010-09-21
Classification: G01R

Abstract:
1. A method of operating a multi-chip integrated circuit package having a plurality of integrated circuit devices, comprising: activating a test mode of a controller of the multi-chip integrated circuit package; and mapping external signal lines coupled to the controller to signal lines of one of the integrated circuit devices of the multi-chip integrated circuit package in response to activating the test mode of the controller; and using the controller, during the test mode, to prevent communication between the external signal lines and remaining integrated circuit devices of the multi-chip integrated circuit package and to allow data to be input to and output from at least one of the external signal lines coupled to the controller and mapped to at least one of the signal lines of the one of the integrated circuit devices of the multi-chip integrated circuit package; wherein operation of the controller after the mapping differs from that which occurs during normal operation of the controller; and wherein each external signal line used during the test mode is also used to convey signals to and/or from the controller during normal operation of the controller.