| 摘要 |
A memory device (118) may use a burst access mode to access a number of consecutive data words by giving one read or write command. These data bursts represent non-overlapping data-units in the memory device which can only be accessed as a whole. Because a request for data may contain only a few bytes and can overlay more than one data-unit in the memory device, the amount of transfer overhead is significant. To minimize this overhead a good mapping from logical addresses to physical addresses is important. For the address translation, a logical array is partitioned into a set of rectangles called windows and each window is stored in a row of the memory device. Data request of data-blocks that are actually stored or retrieved, are analyzed during a predetermined period, to calculate the optimal window size. The memory address translation unit (102) performs the analysis and generates the mapping. |
