Hewlett-packard Development Company, L.P.

Kenneth D Holloway

Dean T Lindsay

John A Benavides

Jeffery A Benis

A system and method provides for direct control of a high speed data link in a computer system for purposes of testing the data link under a full range of anticipated operating conditions. The transmission of test data is preferably under hardware control and preferably does not encounter interference from other data sources in the computer system thereby enabling the intended test pattern data to be experienced by the data link under test in unaltered form. The tested data is preferably compared to the original data in order to evaluate the status of the link under test.

System and method for electrical data link testing

A system and method for testing at least one interface of a digital integrated circuit while at least one other interface of the digital integrated circuit operates in a normal mode is disclosed. Each interface includes at least one boundary scan cell such that each boundary scan cell is electrically coupled to a pin of the digital integrated circuit. The method includes selectively categorizing at least one interface into a first category. At least one other interface is selectively categorized into a second category. A first mode signal is provided to the interfaces categorized into the test mode category such that the interfaces categorized into the test mode category operate in a test mode. A second mode signal is provided to the interfaces categorized into the normal operation mode category such that the interfaces categorized into the normal operation mode category operate in a normal operation mode.

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San Jose, CA, United States of America

Kenneth D Holloway