Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1996-08-13
1999-07-13
Lee, Thomas C.
Electronic digital logic circuitry
Multifunctional or programmable
Array
395651, 326 38, 327108, G06F 906, G06F 1214
Patent
active
059238992
ABSTRACT:
A configurable integrated circuit has first and second externally accessible terminals. A configuration circuit has an input terminal coupled to the first externally accessible terminal and also has an output terminal. The configuration circuit receives a configuration input signal that represents a configuration and generates a configuration output signal that enables the represented configuration. A configuration indicator has an input terminal that is coupled to the output terminal of the configuration circuit and has an output terminal that is coupled to the second externally accessible terminal. The configuration indicator receives the configuration output signal from the configuration circuit and generates on the second externally accessible terminal an indicate signal that identifies the enabled configuration. The configuration circuit may include a plurality of output terminals and receive a configuration input signal that represents one or more configurations. The configuration circuit generates a plurality of configuration output signals that each enable a corresponding one of the one or more configurations when a corresponding configuration output signal has an active state. The configuration indicator receives the configuration output signals and generates on the second externally accessible terminal an indicate signal that indicates a number of the enabled configurations.
REFERENCES:
patent: 5600271 (1997-02-01), Erickson et al.
patent: 5608342 (1997-03-01), Trimberger
patent: 5652844 (1997-07-01), Harwood, III
patent: 5715207 (1998-02-01), Cowell
patent: 5727207 (1998-03-01), Gates et al.
Ma Manny K. F.
Martin Chris G.
Lee Thomas C.
Micro)n Technology, Inc.
Perveen Rehana
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