Methods and systems for detecting and correcting timing signal drift in memory systems
AssigneeMarvell International Ltd.
InventorRoss Swanson
Life of this patent
Estimating the term…
Abstract
Methods and systems for detection and correction of timing signal drift in memory systems are provided. A start time and an end time of a first time interval is determined with control circuitry such that a last falling edge in a first of a plurality of data strobe sequences received from the memory occurs outside of the first time interval. A start time and an end time of a close-enable time interval is adjusted based at least in part on determining whether a second of the plurality of data strobe sequences occurs within the first time interval. Sampling of data received from the memory is disabled in response to determining that the last falling edge in the second received data strobe sequence occurs within the close-enable time interval.
Claims20
A system for reading data, the system comprising a control circuitry configured to:
- sample data received from a memory using a plurality of data strobe sequences;
- adjust a start time and an end time of a disable time interval based at least in part on determining whether a falling edge in one of the plurality of data strobe sequences occurs within a first time interval;
- and
- disable the sampling of the data received from the memory in response to determining that the falling edge in the one of the received data strobe sequences occurs within the disable time interval.
A method for reading data, the method comprising:
- sampling, with a control circuitry, data received from a memory using a plurality of data strobe sequences;
- adjusting, with the control circuitry, a start time and an end time of a disable time interval based at least in part on determining whether a falling edge in one of the plurality of data strobe sequences occurs within a first time interval;
- and
- disabling, with the control circuitry, the sampling of the data received from the memory in response to determining that the falling edge in the one of the plurality of data strobe sequence occurs within the disable time interval.
Dependencies are inferred from the claim text.