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AssigneeAT&T Wireless Services, Inc.
InventorsEamonn Gormley, James M. Hite, Chad A. Pralle
Estimating the term…
An arbitration controller provides arbitration on a multipoint, high speed serial bus with a plurality of drivers. Each driver includes a data input pin, an output enable pin, and an output pin. The bus defaults to a first state when the output of the plurality of drivers are set to high impedance. The arbitration controller eliminates any unstable output states on the drivers by controlling the input signals on the drivers. The arbitration controller detects when the bus is in an arbitration mode. When this is detected, the arbitration controller inputs data to the output enable pin and inputs an opposite state of the first state to the data input pin. Further, the arbitration controller detects when the bus is in a data mode. When this is detected, the arbitration controller inputs data to the data input pin and inputs a driver control signal to the output enable pin.
A method of interfacing with a first driver to provide arbitration on a multipoint, high speed serial bus coupled to a plurality of drivers, wherein the first driver includes a data input pin, an output enable pin, and an output pin, and wherein the bus defaults to a first state when the output of each driver coupled to the bus is set to high impedance, comprising the steps of:
An arbitration controller for providing arbitration on a multipoint high speed serial bus coupled to a plurality of drivers, wherein said arbitration controller is coupled to a bus interface controller and the bus, and wherein the bus defaults to a first state when the output of each driver coupled to the bus is set to high impedance, said arbitration controller comprising:
An arbitration controller interfaced with a first driver for providing arbitration on a multipoint, high speed serial bus coupled to a plurality of drivers, wherein the first driver includes a data input pin, an output enable pin, and an output pin, and wherein the bus defaults to a first state when the output of each driver coupled to the bus is set to high impedance, said arbitration controller comprising:
Dependencies are inferred from the claim text.