Apparatus and method for preventing configurable...

Details Apparatus and method for preventing configurable... Apparatus and method for preventing configurable...

2011-07-19

2011-07-19

Clark, S. V (Department: 2823)

Active solid-state devices (e.g., transistors, solid-state diode

Combined with electrical contact or lead

Configuration or pattern of bonds

C257S784000, C257S724000

Reexamination Certificate

active

07982321

ABSTRACT:
An integrated circuit containing multiple modules coupled to a pad via a multiplexer. The modules are selectively coupled to the pad by the multiplexer to provide integrated circuit function flexibility with a limited number of pads. A multiplexer select signal determines which module or clock circuit is coupled by the multiplexer. A common buffer may be coupled between the multiplexer and the pad to save substrate space. An analog circuit may be coupled to the pad to provide a signal path minimizing signal distortion. The integrated circuit's clock may be coupled via the multiplexer to an off-substrate circuit. Selective module coupling improves the integrated circuit's testing speed, may salvage an integrated circuit containing a malfunctioning module, and provides for signal loopback during testing.

REFERENCES:
patent: 5948114 (1999-09-01), Klingler
patent: 7266624 (2007-09-01), Gaither et al.
patent: 7409005 (2008-08-01), Chang
patent: 7564141 (2009-07-01), Gupta et al.
patent: 2006/0129728 (2006-06-01), Hampel

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