Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1990-03-30
1993-05-04
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
328 381, H04L 700
Patent
active
052088383
ABSTRACT:
A clock multiplier is selectable to provide either an unmultiplied input clock to the internal clock line or a multiplied clock signal, depending upon the state of a test mode input signal. By providing the circuitry on a integrated circuit chip, the chip can be driven at its normal operating frequency using lower-frequency test equipment. One multiplier device includes a plurality of series-connected one-shots.
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patent: 3865305 (1975-02-01), Sampey
patent: 4011516 (1977-03-01), Heimbigner et al.
patent: 4353030 (1982-10-01), Nakamura et al.
patent: 4876702 (1989-10-01), Lesko
Hochstedler Charles
Lunecki Dan
Lyon Terry L.
Wendell Dennis L.
Chin Stephen
Colwell Robert C.
Hughes Richard L.
National Semiconductor Corporation
Rappaport Irving S.
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