Title:
DMA転送システム
Document Type and Number:
Japanese Patent JP4499008
Kind Code:
B2
Abstract:
A DMA transfer system includes a DMA controller having at least one channel coupled to a system bus, the DMA controller configured to perform a DMA transfer via the system bus according to a DMA transfer setting of the at least one channel, and a DMAC control unit coupled to the DMA controller, wherein the DMAC control unit includes a plurality of virtual channels configured to have respective DMA transfer settings made thereto, a virtual channel arbiter configured to select one of the plurality of virtual channels, and a DMA setting circuit configured to read a DMA transfer setting of the selected virtual channel to write the read DMA transfer setting to the at least one channel of the DMA controller.
Inventors:
Kenichiro Kuroki
Kenji Sato
Kenji Sato
Application Number:
JP2005268217A
Publication Date:
July 07, 2010
Filing Date:
September 15, 2005
Export Citation:
Assignee:
Fujitsu Microelectronics Limited
International Classes:
G06F13/28
Domestic Patent References:
| JP6509896A | ||||
| JP9231161A | ||||
| JP2002530778A | ||||
| JP63244158A | ||||
| JP1099147A | ||||
| JP2003256356A |
Foreign References:
| US20040093438 |
Attorney, Agent or Firm:
Tadahiko Ito