| 摘要 |
PROBLEM TO BE SOLVED: To efficiently perform memory access. SOLUTION: The activation state of each bank in a memory device is managed. Read/write is detected with respect to the memory access concerning an access request from a bus master. A dependency relationship between the succeeding memory access and the bank is detected with respect to the memory access, and a page error of the succeeding memory access is determined. When it is determined that the memory access is read, there is no dependency relationship between the succeeding memory access and the bank, and also the succeeding memory access is the page error, the command of the succeeding memory access is issued by a maximum burst length. Extra data which are read with respect to the succeeding memory access are processed as prefetch data. COPYRIGHT: (C)2011,JPO&INPIT |
