| 摘要 |
Memory access is accelerated by performing a burst read without any problems caused due to rewriting of data. A buffer memory device reads, in response to a read request from a processor, data from a main memory including cacheable and uncacheable areas. The buffer memory device includes an attribute obtaining unit which obtains the attribute of the area indicated by a read address included in the read request; an attribute determining unit which determines whether or not the attribute obtained by the attribute obtaining unit is burst-transferable; a data reading unit which performs a burst read of data including data held in the area indicated by the read address, when determined that the attribute obtained by the attribute obtaining unit is burst-transferable; and a buffer memory which holds the data burst read by the data reading unit.
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