Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing
Reexamination Certificate
2008-07-01
2008-07-01
Britt, Cynthia (Department: 2117)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital logic testing
Reexamination Certificate
active
07395467
ABSTRACT:
Today many instances of IEEE 1149.1 Tap domains are included in integrated circuits (ICs). While all TAP domains may be serially connected on a scan path that is accessible external to the IC, it is generally preferred to have selectivity on which Tap domain or Tap domains are accessed. Therefore Tap domain selection circuitry may be included in ICs and placed in the scan path along with the Tap domains. Ideally, the Tap domain selection circuitry should only be present in the scan path when it is necessary to modify which Tap domains are selected in the scan path. The present invention describes a novel method and apparatus which allows the Tap domain selection circuitry to be removed from the scan path after it has been used to select Tap domains and to be replaced back into the scan path when it is necessary to select different Tap domains.
REFERENCES:
patent: 2001/0037479 (2001-11-01), Whetsel
patent: 2001/0037480 (2001-11-01), Whetsel
patent: 2002/0049928 (2002-04-01), Whetsel et al.
“Inevitable use of TAP domains in SOCs” by Whetsel, L. International Test Conference Proceedings Publication Date : 2002 On p. 1191 ISSN:1089-3539 ISBN: 0-7803-7542-4 INSPEC Accession No. 7528895.
“Test access of TAP'ed and non TAP'ed cores” by Whetsel, L. International Test Conference Proceedings 1997, Publication Date: Nov. 1-6, 1997 p. 1041 ISBN: 0-7803-4209-7 INSPEC Accession No. 5876914.
Bassuk Lawrence J.
Brady W. James
Britt Cynthia
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Remove signal from TAP selection circuitry to multiplexer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Remove signal from TAP selection circuitry to multiplexer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remove signal from TAP selection circuitry to multiplexer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2769598