Method and system for tracking the state of each one of multiple JTAG chains used in testing the logic of intergrated circuits

Method and system for tracking the state of each one of multiple JTAG chains used in testing the logic of intergrated circuits

The logic circuitry of an IC chip is connected to JTAG register chains which hold state information on each portion of the logic circuitry therein. A JTAG Tracker Module is connected to the controls of each of the JTAG register chains enabling a programmer-operator to read the present state of each...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DATWYLER, WAYNE C, HA, LONG V, TRAN, DAN T
Format: Patent
Sprache:eng
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The logic circuitry of an IC chip is connected to JTAG register chains which hold state information on each portion of the logic circuitry therein. A JTAG Tracker Module is connected to the controls of each of the JTAG register chains enabling a programmer-operator to read the present state of each JTAG register chain and enabling a readout of the logic circuits condition in a single clock period.