| 摘要 |
PURPOSE:To equalize the priority of respective bus using equipments by assigning the use of the bus by a bus arbiter having a means for sampling a bus request signal from the respective bus using equipments and a means for circulating the priority. CONSTITUTION:The sampling means 11 samples the bus using request from the respective bus using equipments and if there is the bus using request, stores it. A priority processing means 12 processes the bus using request stores in the sampling means 11 and transmits a bus using permission signal. When the plural bus using requests are stored, the bus using permission is given according to the priority. The priority circulating means 13 circulates the priority at every time when the priority means 12 gives the bus using permission. The sampling means 11, the priority processing means 12, and the priority circulating means 13 receive the using request from the respective bus using equipments as the bus arbiter 1 and assign the bus using permission. |
