| 摘要 |
PURPOSE:To perform arbitration at a high speed by having outputs to 2<n-1> pieces of buses against a priority number of (n) digits and then driving the output lines up to the a-th one against a given priority number (a). CONSTITUTION:When an arbitration enable input AE 11 is equal to 1, a priority output PO 12 up to the a-th one is set at 1 against a given priority number (a). The PO 12 is connected to a priority line PR 13 on a bus via a wired OR buffer 2 and therefore coincident with the PO 12 to be applied to an arbitration circuit where the AE 11 having the largest priority number and connected to the PR 13 is equal to 1. In an arbitration logic 1, an win is immediately known in a competition of the priority number by the PR 13 and its own PO 12 or the (a+1)-th PR 13. If the win is confirmed, a WIN 14 is set at 1. |
