Independent source read and destination write enhanced DMA

Details Independent source read and destination write enhanced DMA Independent source read and destination write enhanced DMA

2005-05-13

2009-08-18

Sorrell, Eron J (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S021000, C710S022000, C711S149000, C711S168000

Reexamination Certificate

active

07577774

ABSTRACT:
The present invention provides for independent source-read and destination-write functionality for Enhanced Direct Memory Access (EDMA). Allowing source read and destination write pipelines to operate independently makes it possible for the source pipeline to issue multiple read requests and stay ahead of the destination write for fully pipelined operation. The result is that fully pipelined capability may be achieved and utilization of the full DMA bandwidth and maximum throughput performance are provided.

REFERENCES:
patent: 4470115 (1984-09-01), Wehr
patent: 5566317 (1996-10-01), Treiber et al.
patent: 5835417 (1998-11-01), Ayukawa et al.
patent: 2005/0219888 (2005-10-01), Kwon et al.

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