DIAGNOSTIC MODE SWITCHING DEVICE AND METHOD THEREFOR

PROBLEM TO BE SOLVED: To aim at sharing a pin between different diagnostic mechanisms, without installing an exclusive pin for switching of different diagnostic mechanisms in the inside of an integrated circuit. SOLUTION: A system having a JTAG diagnostic unit 2 and a serial wire diagnostic unit 4 i...

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Bibliographische Detailangaben
Hauptverfasser:	ASHFIELD EDMOND JOHN SIMON, HOULIHANE THOMAS SEAN, WILLIAMS MICHAEL JOHN, HARROD PETER LOGAN, CRASKE SIMON J, KIMELMAN PAUL
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To aim at sharing a pin between different diagnostic mechanisms, without installing an exclusive pin for switching of different diagnostic mechanisms in the inside of an integrated circuit. SOLUTION: A system having a JTAG diagnostic unit 2 and a serial wire diagnostic unit 4 is described. A monitoring unit 6 is connected to a data connector 14, which is shared with the diagnostic units 2, 4. If a specified pattern is detected in the data connector 14, the switching is performed between diagnostic modes corresponding to each of the diagnostic units 2, 4 to be operated. COPYRIGHT: (C)2007,JPO&INPIT