Patent ID: 7173340
Filing Date: 2007-02-06
Classification: H01L,H03K

Abstract:
1. A first integrated circuit die adapted for die stacking, comprising: (a) an input/output function control bonding pad; (b) a first bonding pad controllable to function as either an input or an output in response to an input/output function control signal applied to the input/output function control bonding pad; (c) a second bonding pad controllable to function in a first mode or in a second mode in response to the input/output function control signal; (d) input/output control circuitry coupled to the first bonding pad and also coupled to the input/output control bonding pad for (e) the input/output function control circuitry of the first integrated circuit die functioning in cooperation with corresponding input/output function control circuitry in a second integrated circuit die similar to the first integrated circuit die and stacked on the first integrated circuit die to form a selected path for communication of information between the first and second integrated circuit die when the first bonding pad of the first integrated circuit die is connected by a wire bond to a corresponding first bonding pad of the second integrated circuit die.