Method, apparatus, and computer program product for...

Details Method, apparatus, and computer program product for... Method, apparatus, and computer program product for...

2006-10-31

2006-10-31

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Testing

C365S149000

Reexamination Certificate

active

07130231

ABSTRACT:
A method, apparatus, and computer program product are provided for implementing an enhanced DRAM interface checking. An interface check mode enables interface checking using a refresh command for a DRAM. A predefined address pattern is provided for the interface address inputs during a refresh command cycle. Interface address inputs are checked for a proper value being applied and an error is signaled for unexpected results. An extended test mode includes further testing during a cycle after the refresh command cycle. Then command inputs also are checked for a proper value being applied and an error is signaled for unexpected results.

REFERENCES:
patent: 5381421 (1995-01-01), Dickol et al.
patent: 6400625 (2002-06-01), Arimoto et al.
patent: 6404684 (2002-06-01), Arimoto et al.
patent: 6486493 (2002-11-01), Arimoto et al.

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