Method and apparatus to interface monotonic and non-monotonic do

Details Method and apparatus to interface monotonic and non-monotonic do Method and apparatus to interface monotonic and non-monotonic do

1996-12-27

1998-10-13

Westin, Edward P.

Electronic digital logic circuitry

Clocking or synchronizing of logic stages or gates

Field-effect transistor

326121, 326 97, H03K 19096

Patent

active

058217754

ABSTRACT:
The present invention is an improved interface between monotonic and non-monotonic domino logic. A monotonic domino logic block is clocked by CLK. The last stage of the monotonic domino logic is clocked by the delayed clock, DCLK, to extend its evaluation period beyond Phase I by a brief window of time, t.sub.d. The true output and the inverted output of the last stage of the monotonic domino logic block are inputs to a non-monotonic domino evaluation tree. The non-monotonic domino evaluation tree operates while an evaluation control block is ON. The evaluation control block is ON only during that extension of the evaluation period, t.sub.d, for a time less than or equal to the period t.sub.d. Since the output of the last stage of the monotonic logic block remains stable during this extended evaluation period, and the non-monotonic domino evaluation tree operates at most during this window of time, there is no need to use latches or use a dual rail implementation for the monotonic logic.

REFERENCES:
patent: 3601627 (1971-08-01), Booher
patent: 4827160 (1989-05-01), Okano
patent: 4849658 (1989-07-01), Iwamura et al.
patent: 5378942 (1995-01-01), Wu et al.
patent: 5453708 (1995-09-01), Gupta et al.
patent: 5517136 (1996-05-01), Harris et al.
patent: 5638009 (1997-06-01), Sutherland et al.
"Flow-Through Latch and Edge-Triggered Flip-Flop Hybrid Elements", International Solid State Circuits Conference, Feb. 9, 1996, pp. 138-139.
"An X86 Microprocessor With Multimedia Extensions", International Solid State Circuits Conference, Feb. 7, 1997, pp. 172-173.
Donald Draper, et al. "An X86 Microprocessor with Multimedia Extensions" Proceedings From IEEE, Feb. 7, 1997, pp. 172-173.

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