Self-setup non-overlap clock generator

Details Self-setup non-overlap clock generator Self-setup non-overlap clock generator

1998-02-06

1999-02-02

Miska, Vit

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

327239, 327269, 327295, G04F 800, H03K 3037, H03K 513

Patent

active

058674535

ABSTRACT:
A self-setup non-overlap clock generator is disclosed. This clock generator includes a primary clock signal input terminal for providing a primary clock signal, and a selection signal input terminal for providing at least one selection signal. The present invention also includes a first logic gate having a first input terminal coupled to receive an inverted signal of the primary clock signal. Further, a second logic gate is provided, having a first input terminal coupled to receive the primary clock signal. A first programmable delay portion is used to delay an output signal from the first logic gate an amount of time according to the selection signal, and a second programmable delay portion is used to delay an output signal from the second logic gate a predetermined amount of time according to the selection signal. Therefore, a first clock signal is generated from the output of the first logic gate, and a second clock signal is generated from the output of the second logic gate. Particularly, the present invention includes a test circuit to determine whether a non-overlap space between the first clock signal and the second clock signal conforms to a predetermined value. Finally, a selector is used to generate the at least one selection signal in response to at least one output of the test circuit such that a smallest value out of all possible non-overlap spaces is chosen.

REFERENCES:
patent: 4877974 (1989-10-01), Kawai et al.
patent: 5389831 (1995-02-01), Eisenstadt
patent: 5440250 (1995-08-01), Albert
patent: 5444405 (1995-08-01), Truong et al.
patent: 5710744 (1998-01-01), Suda
patent: 5751665 (1998-05-01), Tanoi

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