Drift adjustment in timing signal forwarded from memory controller to memory device based on a detected phase delay occurring on a second timing signal with a different frequency

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United States of America Patent

PATENT NO 9568942
SERIAL NO

14961077

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Abstract

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A memory system in which a timing drift that would occur in distribution of a first timing signal for data transport in a memory device is determined by measuring the actual phase delays occurring in a second timing signal that has a frequency lower than that of the first timing signal and is distributed in one or more circuits mimicking the drift characteristics of at least a portion of distribution of the first timing signal. The actual phase delays are determined in the memory device and provided to a memory controller so that the phases of the timing signals used for data transport may be adjusted based on the determined timing drift.

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Patent Owner(s)

Patent OwnerAddress
RAMBUS INC4453 NORTH FIRST STREET SUITE 100 SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chau, Pak Shing Saratoga, US 37 1463
Kim, Jun Los Altos Hills, US 154 3290
Richardson, Wayne S Saratoga, US 62 1147

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