JTAG interface system for communicating with compliant and non-c

Details JTAG interface system for communicating with compliant and non-c JTAG interface system for communicating with compliant and non-c

1995-07-20

1998-01-13

Canney, Vincent P.

Excavating

371 223, G06F 1100

Patent

active

057087733

ABSTRACT:
A system and method for using standard JTAG protocol for testing protocol compliant and non-protocol compliant digital devices without altering the JTAG protocol or the non-compliant device. A specialized Test Access Port Controller controls and monitors the states applied to the non-compliant device in order to eliminate the PAUSE state in the non-compliant device and to limit the Run-Test/Idle state to one clock period.

REFERENCES:
patent: 5329471 (1994-07-01), Swoboda et al.
patent: 5574730 (1996-11-01), End, III et al.
patent: 5581541 (1996-12-01), Whersel
patent: 5621651 (1997-04-01), Whersel
patent: 5627842 (1997-05-01), Brown et al.

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