| 摘要 |
PURPOSE:To transfer asynchronous data between a master device and a slave device having routes whose transfer speeds are different under optimum control by providing the titled device with a means for calculating transfer start timing at the time of optimum control in each route based on the information of a data transfer speed and the quantity of processing data. CONSTITUTION:When the master device 11a generates an access request to the slave device 12 to a control device 13, a transfer control means 134 in the control device 13 accesses the slave device 12a based on an access request command and stores data read out from the slave device 12a in a buffer memory 132. A transfer start timing calculating part 133 calculates the transfer start timing at the time of optimum control of respective transfer routes (111a, 111b) based on the information of the data transfer speed and the quantity of processing data stored in a transfer control information table 131. |
