Data transfer apparatus by direct memory access controller

Details Data transfer apparatus by direct memory access controller Data transfer apparatus by direct memory access controller

2005-08-04

2009-12-29

Tsai, Henry W. H. (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C711S118000

Reexamination Certificate

active

07640374

ABSTRACT:
A DMA apparatus which reads data corresponding to a descriptor from memory, and a dividing unit in a descriptor management device divides one descriptor into a plurality of sub-descriptors. A plurality of DMA controllers produce a plurality of reading requests for reading data corresponding to the plurality of sub-descriptors from the memory. A memory controller reads the corresponding data from the memory according to the plurality of reading requests.

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Office Action dated Jun. 30, 2009 in Japanese Application No. 2005-008008.

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