Intel Corporation

Ishaan S Shah

Nasser A Kurd

Gerald S Pasdast

Lakshmipriya Seshan

Peipei Wang

Yingyu Miao

An apparatus and method is provided that compensates for the supply droops to minimize strobe shifts and to regain eye margin. The apparatus includes a droop detector to detect voltage droops at one or more trip (or threshold) levels and these detected voltage droops are translated to a shift in clock phase setting. For example, propagation delay of a delay locked loop (DLL) and/or clock edge selection from a phase interpolator (PI) is adjusted according to the detected voltage droop levels to maintain a trained relationship between the sampling clock strobe and data eye. A lookup table is used to determine a PI code or a DLL propagation delay code corresponding to a voltage droop level.

Growing community of inventors

Santa Clara, CA, United States of America

Ishaan S Shah