Patent · US Active

Cycle accurate skew adjust

US11082034B1 · kind B1 · utility

1Cited by

9References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Andreas H. A. Arp · Nufringen, DE
Douglas J. Malone · Pleasant Valley, US
Thomas Makowski · Pfullingen, DE
Michael V. Koch · Ehningen, DE

Key dates

Filing date	Jan 30, 2020
Grant date	Aug 3, 2021
Priority date	—
Expiry date	Jan 30, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03L7/08
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A method for cycle accurate deskewing a second clock signal with respect to a first clock signal is provided. The first clock signal has been propagated from a first clock source through a first clock tree. The second clock signal has been propagated from the first clock source through a second clock tree. The second clock tree comprises a programmable delay line for inducing a delay. The method comprises determining a first clock tree latency of the first clock tree, determining a second clock tree latency of the second clock tree, setting a cycle time of the first clock source to a measuring cycle time depending on the first clock tree latency and/or the second clock tree latency, adjusting a skew between the second clock signal and the first clock signal, setting the cycle time of the first clock source to an operating cycle time.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.