System and method to protect SDRAM data during warm resets

Details System and method to protect SDRAM data during warm resets System and method to protect SDRAM data during warm resets

1998-08-18

2000-09-12

Bragdon, Reginald G.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711166, 713 1, G06F 1200

Patent

active

061192007

ABSTRACT:
A system and method in which a warm-reset request event is detected by reset hardware that subsequently blocks the warm reset request and places the SDRAM in a self-refresh mode in which the SDRAM data continually refreshes its stored data. Once the SDRAM is in the self-refresh mode the reset hardware resets the SDRAM's controller. Because the SDRAM is in the self-refresh mode when its controller is reset, none of the invalid signals on the controllers control lines will affect the stored data.

REFERENCES:
patent: 5204840 (1993-04-01), Mazur
patent: 5630090 (1997-05-01), Keehn et al.

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