Fully programmable linear feedback shift register

Details Fully programmable linear feedback shift register Fully programmable linear feedback shift register

1986-11-25

1988-03-29

Heyman, John S.

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

Shift register

Particular input circuit

377 49, 377 54, 377129, 377 29, 377110, G11C 1500, G11C 2100, G11C 2900

Patent

active

047349212

ABSTRACT:
Basic block shift registers are cascaded to form a fully programmable linear feedback shift register. Each of the basic block shift registers comprises a plurality of flip-flops, each of which includes control logic circuits. A polynomial equation is first fed into the linear feedback shift register for setting the respective flip-flops into predetermined logic states, which are used to encode messages to be shifted by the programmable linear feedback shift register. The number of flip-flops in the programmable linear feedback shift register can be varied, in accordance to the polynomial equation. Likewise, the polynomial equation also determines the number of times the programmable linear feedback shift register is to circulate the encoded messages.

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