| 摘要 |
<p>The invention relates to a device adapted to be connected to a non-pended bus, a circuit of this device for providing communications interface for that device to the non-pended bus, and a process by which this device arbitrates an access to a bus. The interconnecting circuit comprises controller means (300) coupled to a no arbitration and busy lines of the bus for indicating an arbitration cycle, driver means (334) coupled to the controller means for asserting one or two data lines of the bus corresponding to the device during the arbitration, priority resolution means (380) coupled to the data lines to indicate that the device has the highest priority during the arbitration cycle, receive register means (304) coupled to information lines of the bus for comparing the ID number of the device with the ID number of the device, and switching means (308) connected to receive register and to driver means for asserting low or high priority data line to the device during the arbitration cycle.</p> |
