Title:
DATA TRANSFER DEVICE AND METHOD OF CONTROLLING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/151859
Kind Code:
A1
Abstract:
A data transfer device that confirms completion of writing into a memory on transferring data to the memory via a bus through which a response indicating completion of data writing in the memory is not sent back includes an inter-memory data transfer control unit performing data transfer between the memories. When the inter-memory data transfer control unit detects switching of a write destination memory from a first memory to a second memory, in order to confirm that writing into the first memory is completed, the inter-memory data transfer control unit performs confirmation of write completion as to the first memory by a procedure different from writing into the memory. When a data transfer with a designated transfer length is completed, in order to confirm that writing is completed as to the write destination memory at the end of the data transfer, the inter-memory data transfer control unit performs confirmation of write completion as to the write destination memory at the end of the transfer by the procedure different from writing into the memory. The inter-memory data transfer control unit notifies the processor of completion of an inter-memory data transfer based on the confirmation of write completion.
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Inventors:
ARAI MASAHIRO (JP)
HIRAYAMA HIROSHI (JP)
TAKADA MASANORI (JP)
KANAYAMA HIROSHI (JP)
FUKUDA HIDEAKI (JP)
HIRAYAMA HIROSHI (JP)
TAKADA MASANORI (JP)
KANAYAMA HIROSHI (JP)
FUKUDA HIDEAKI (JP)
Application Number:
PCT/JP2010/003661
Publication Date:
December 08, 2011
Filing Date:
June 01, 2010
Export Citation:
Assignee:
HITACHI LTD (JP)
ARAI MASAHIRO (JP)
HIRAYAMA HIROSHI (JP)
TAKADA MASANORI (JP)
KANAYAMA HIROSHI (JP)
FUKUDA HIDEAKI (JP)
ARAI MASAHIRO (JP)
HIRAYAMA HIROSHI (JP)
TAKADA MASANORI (JP)
KANAYAMA HIROSHI (JP)
FUKUDA HIDEAKI (JP)
International Classes:
G06F13/28; G06F13/42
Foreign References:
| US20090248942A1 | 2009-10-01 | |||
| US20100031272A1 | 2010-02-04 |
Attorney, Agent or Firm:
ISSHIKI & CO. (12-7 Shinbashi 2-chome, Minato-k, Tokyo 04, JP)
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Claims: