Fast programmable/resettable CMOS Johnson counters

Details Fast programmable/resettable CMOS Johnson counters Fast programmable/resettable CMOS Johnson counters

1993-12-17

1995-06-13

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

H03K 2100

Patent

active

054250749

ABSTRACT:
An integrated circuit for frequency synthesis within a microprocessor. The integrated circuit includes at least one of n-bit Johnson counter being clocked by a clock internal to the microprocessor. The n-bit Johnson counter being coupled to odd-even logic which generates "2n-1" outputs having "even" and "odd" divide values. The odd-even logic is coupled to a multiplexor which is selected to pass a selected output to be fed back into the n-bit Johnson counter.

REFERENCES:
patent: 4851783 (1989-07-01), Rabinger
patent: 4856032 (1989-08-01), Klekotka et al.
patent: 4972362 (1990-11-01), Elkind et al.

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