High speed fully scaleable, programmable and linear digital...

Details High speed fully scaleable, programmable and linear digital... High speed fully scaleable, programmable and linear digital...

2007-04-17

2007-04-17

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S161000, C327S278000

Reexamination Certificate

active

10879438

ABSTRACT:
The digitally programmable delay circuit to correct timing skew between data and clock is developed. The digitally programmable delay circuit may be built by cascading delay cells. The delay circuit uses delay cells comprising simple digital elements such as inverters and tri-state inverters to eliminate the intrinsic delay and achieves linearity and monotinicity. The delay cell may be used as a building module which is repeatedly used in a serial fashion. The delay range is fully programmable from the delay of one delay cell to infinity if the chip area is available. The delay range can be scaled by adding more delay cells.

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