Patent ID: 7096395
Filing Date: 2006-08-22
Classification: G01R,G06F

Abstract:
1. An integrated circuit fabricated on a chip, comprising: multiple on-chip logic analyzers each including a trigger word recognizer; and an on-chip memory that captures data in response to match signals from the trigger word recognizers, wherein the trigger word recognizers each comprise a Boolean logic section and a counter/timer section, wherein the Boolean logic section includes multiple hardware match logical units that compare a match value with internal state data and produce an output signal that is true if the comparison indicates a match condition, and wherein each output signal of a hardware match logical units connects to both an AND term and an OR term, and a user selects whether the AND term or the OR term, is enabled for each of the hardware match logical units, wherein for each trigger word recognizer, the hardware match logical units for which the AND term is selected have their output signals combined together in an AND gate, and all the hardware match logical units for which the OR term is selected have their output signals combined together in an OR gate, wherein the output of the AND gate and the output of the OR gate are selectively combined together in one of either an AND operation, an OR operation, a NAND operation, or a NOR operation, wherein the selective combining is performed via a multiplexer, and wherein the multiplexer output is selectively coupled to a second multiplexer via two different signal paths, and wherein the first signal path remains asserted if a match condition exists, and the second signal path is asserted for a first clock that the match condition exists, and wherein the second multiplexer selects one of the first or second signal path based on a select bit that is programmed by the user.