CLOCK-DISTRIBUTION DEVICE OF IC AND METHOD FOR ARRANGING CLOCK-DISTRIBUTION DEVICE
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United States of America Patent
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Nov 17, 2017
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Dec 10, 2014
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Abstract
A method for arranging a clock-distribution device of an IC is provided. An initial placement of the IC is obtained. The initial placement includes a first portion corresponding to a clock-distribution device, a second portion corresponding to a plurality of modules, and a third portion corresponding to a clock-generation device. The clock-distribution device distributes a plurality of first clock signals to the modules according to a second clock signal from the clock-generation device. The first portion is selected from the initial placement. Clocks within the selected first portion are distributed to obtain a fourth portion of the clock-distribution device. The fourth portion is placed in the initial placement to replace the first portion and to obtain a final placement of the IC. Each module has an input port corresponding to the individual first clock signal, and the clock-generation device has an output port corresponding to the second clock signal.
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