Dynamic bus sizing of DMA transfers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 20, 1996
Issued Date -
N/A
app pub date -
Apr 6, 1994
filing date -
Oct 15, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A DMA controller is provided for transferring data between source and destination devices over an I/O bus. The DMA control circuit includes a bus interface unit for providing a bus size information at the beginning of each consecutive bus cycle and a look ahead responsive to the bus size information for providing a bus size control signal. A DMA control circuit responsive to the bus size control signal controls the bus width during contiguous transfer cycles. By dynamically adjusting the DMA control circuit, back to back data reads and writes may occur with no wait states inserted for generating the terminal count information.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully