Method and apparatus for cycle tracking variable delay lines

Details Method and apparatus for cycle tracking variable delay lines Method and apparatus for cycle tracking variable delay lines

1993-05-12

1995-08-22

Harvey, Jack B.

G06F 1338

Patent

active

054448573

ABSTRACT:
Peripheral components are interfaced to a computer system through cycle tracking variable delay lines. The computer system includes a system I/O containing, in part, a bus cycle tracking apparatus. The bus cycle tracking apparatus includes cycle tracking logic, a plurality of delay lines, leading and trailing multiplexors (MUXs) and a state MUX. The bus cycle tracking apparatus controls the asynchronous delay of an output reference signal. A plurality of leading and trailing timing reference signals are provided as inputs to the plurality of delay lines. The leading and trailing timing references are delayed by the delay lines a time specified in accordance with an AC timing specification. The bus cycle is tracked such that during a leading/idle state, the leading timing reference is selected as the output reference, and during a trailing state, the trailing reference is selected. The independent control of the output reference signal allows all bus cycle events to be controlled precisely and independently.

REFERENCES:
patent: 3908084 (1975-09-01), Wiley
patent: 4459656 (1984-07-01), Wilder, Jr.
patent: 4701841 (1987-10-01), Goodrich et al.
patent: 4750113 (1988-06-01), Buggert
patent: 4787064 (1988-11-01), Wagner
patent: 5097437 (1992-03-01), Larson
patent: 5165037 (1992-11-01), Culley
patent: 5191581 (1993-03-01), Woodbury et al.
patent: 5191653 (1993-03-01), Banks et al.
patent: 5191657 (1993-03-01), Ludwig
patent: 5201036 (1993-04-01), Yoshimatsu
patent: 5218686 (1993-06-01), Thayer
patent: 5237676 (1993-08-01), Arimilli et al.
patent: 5261057 (1993-11-01), Coyle et al.
patent: 5276684 (1994-01-01), Pearson
patent: 5276858 (1994-01-01), Oak et al.
patent: 5301279 (1994-04-01), Riley
patent: 5305452 (1994-04-01), Khan et al.

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