System and method for supporting variable-width memory accesses

Details System and method for supporting variable-width memory accesses System and method for supporting variable-width memory accesses

2008-05-27

2008-05-27

Ellis, Kevin L (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

07380075

ABSTRACT:
A system and method for supporting variable-width memory accesses includes storage registers configured to store transfer data. The storage registers have a pre-determined storage register width. A host interface moves the transfer data to and from the storage registers. The host interface has a data transfer width that is greater than the storage register width. A memory access module analyzes a mode flag that is incorporated into a transfer address. The memory access module performs the memory access operation in a full mode if the mode flag is set to a full access state. Conversely, the memory access module performs the memory access operation in a partial access mode if the mode flag is set to a partial access state. In the partial transfer mode, the transfer data has a data width that is equal to the storage register width. The memory storage module is able to directly access a single one of the storage registers.

REFERENCES:
patent: 5260555 (1993-11-01), Sakamoto
patent: 6038655 (2000-03-01), Little et al.
patent: 2003/0067456 (2003-04-01), Low et al.
patent: 2004/0098549 (2004-05-01), Dorst

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