Apparatus and method for performing DMA data transfer
US7752349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2006 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Jan 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The DMA data transfer apparatus includes a memory, a communication controller, a DMA controller having a plurality of DMA engines each of which transfers data by DMA to the communication controller from the memory, and a DMA control unit. The DMA control unit determines a division size of transfer data such that the DMA engine can transfer the data, issues a data transfer directive by the DMA to the DMA controller, and controls data transfer by the DMA. The DMA control unit transmits the determination information for determination of the termination of data transfer to the communication controller. The communication controller determines the termination of data transfer based on the determination information transmitted from the DMA control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.