DMA engine for fetching words in reverse order

Details DMA engine for fetching words in reverse order DMA engine for fetching words in reverse order

2007-10-16

2007-10-16

Sparks, Donald (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S001000, C710S052000, C710S062000, C710S065000, C711S001000, C711S004000, C711S100000

Reexamination Certificate

active

10735980

ABSTRACT:
Presented herein is a direct memory access engine for providing data words in the reverse order. The data words are fetched in batches comprising a predetermined number of data words starting from the last data word and proceeding to the first data word. The batches are stored in a local buffer. The contents of the local buffer are transmitted in reverse order.

REFERENCES:
patent: 4608633 (1986-08-01), Boothroyd et al.
patent: 4704641 (1987-11-01), Stohs
patent: 6665082 (2003-12-01), Takeoka et al.
patent: 6795208 (2004-09-01), Tanaka
patent: 6876705 (2005-04-01), Katsavounidis et al.
patent: 2004/0131118 (2004-07-01), Kim et al.

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