Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1994-07-11
1996-09-03
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327199, 327203, 327211, H03K 3356, H03K 3289
Patent
active
055527370
ABSTRACT:
A device which includes a plurality of master/slave stages, each master/slave stage includes a master segment and at least one slave segment. Each master segment (excluding the one including a first master/slave stage) may be actuated by either external logic during normal operation, or by the output of a preceding slave segment during a scan operation. A continuous single phase clock provides clocked signals to a scan port, as well as the master segment and the slave segment in each of said master/slave stages. A control portion deactivates logic applied to the master segments, and actuates logic applied from the scan port to said master segments during all scan enable periods. The control portion also deactivates the scan port from the master segment, and activates the logic output to the master segments during all normal operation periods.
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Callahan Timothy P.
International Business Machines - Corporation
Lam T.
LandOfFree
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