Chained DMA devices for crossing common buses
US5664142A · kind A · utility
13Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1990 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Oct 1, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Chaining or cascading two or more DMA devices to perform DMA transfers across common buses. DMA devices are modified to act as a bus slave relative to another DMA bus master device so that information can be transferred from one bus to another across a third bus common to the DMA devices. The slave DMA can cause the master DMA to stop sending data to limit the bandwidth requirements of the common bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.