| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data transfer device sequentially detecting an internal memory usage in each transfer channel, and allowing a dynamic change of internal memory capacity allocated to each transfer channel according to the usage. Ž<P>SOLUTION: In this data transfer device 1, a data memory 11 temporarily holds data transferred from the transfer channels 1-n, a setting value storage register 12 stores an initial setting value and an increase/reduction setting value of memory distribution capacity set from an external host 1000, a memory capacity use state detection part 13 detects a use state of the memory capacity of each transfer channel, a memory distribution capacity change part 14 increases or reduces the memory distribution capacity initially set by the initial setting value by the increase/reduction setting value based on the detected memory capacity use state, and a memory control part 15 distributes an address of the transfer data memory 11 to each transfer channel according to the changed memory distribution capacity, and controls writing/reading of the transfer data memory 11. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
