Method and apparatus for preserving the contents of synchronous DRAM through system reset

Method and apparatus for preserving the contents of synchronous DRAM through system reset

A method, system, and apparatus for maintaining the contents of a self-refreshable memory device during periods of data processing system reset is provided. In one embodiment, a refresh controller receives an indication that the data processing system is being reset. If necessary, the refresh contro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YONG SUKSOON, IACHETTA, JR. RICHARD NICHOLAS, ATTAWAY DAVID LAWRENCE, CHETTI LEONARD F
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Beschreibung
Zusammenfassung:A method, system, and apparatus for maintaining the contents of a self-refreshable memory device during periods of data processing system reset is provided. In one embodiment, a refresh controller receives an indication that the data processing system is being reset. If necessary, the refresh controller modifies the signal from a memory controller to the memory device such that the memory device is placed in a self-refresh mode. The refresh controller keeps the memory device in the self-refresh mode until the data processing system re-enables external refresh signals.