| 摘要 |
An integrated circuit is presented having a plurality of logic modules dispersed about a surface of a semiconductor substrate. Each logic module includes a set of control and status registers including at least one control register storing a control value. A functional unit of each logic module performs one or more logic functions dependent upon the control value stored in the control register. A central controller is coupled to the each of the logic modules. The central controller is adapted to receive address, data, and control signals (e.g., from signal lines of an external bus coupled to I/O pads of the integrated circuit), and issues read/write commands to read/write the control and status registers dependent upon the address, data, and control signals. A write command may, for example, modify the control value stored in a selected one of the control registers. The integrated circuit may include a bus which couples the central controller to each of the logic modules. The bus may, for example, couple the central controller and each of the logic modules in series forming a communication ring. In this case, the central controller and the logic modules represent separate modules along the communication ring which communicate by exchanging data via the communication ring. The data may travel in a single direction around the communication ring. The central controller and the logic modules may communicate according to an established set of communication rules.
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