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    • 4. 发明授权
    • Concurrent logical and physical construction of voltage islands for mixed supply voltage designs
    • 用于混合电源电压设计的并联电压岛的逻辑和物理构造
    • US06792582B1
    • 2004-09-14
    • US09713829
    • 2000-11-15
    • John M CohnAlvar A. DeanDavid J. HathawayDavid E. LackeyThomas M. LepsicSusan K. LichtensteigerScott A. TetreaultSebastian T. Ventrone
    • John M CohnAlvar A. DeanDavid J. HathawayDavid E. LackeyThomas M. LepsicSusan K. LichtensteigerScott A. TetreaultSebastian T. Ventrone
    • G06F1750
    • G06F17/5045G06F17/5068
    • Both logical and physical construction of voltage islands is disclosed. A semiconductor chip design is partitioned into “bins”, which are areas of the design. In this way, a semiconductor chip design may be “sliced” into various areas and the areas may then be assigned to various voltage levels. Each bin may be thought of as a voltage island. Circuits in the design can be added to or removed from the various bins, thereby increasing or decreasing the speed and power of the circuits: the speed and power increase if a circuit is placed into a bin assigned a higher voltage, and the speed and power decrease if a circuit is placed into a bin having a lower voltage. The size and location of the bins may also be changed. By iterating these steps, the optimum power consumption may be met while still meeting speed constraints and other criteria. The present invention is applicable to any placement environment, such as an annealing placement tool, that proceeds through successive refinement of the locations of the circuits on the design and in which the placement process may be interrupted to make changes in placement of the logic.
    • 公开了电压岛的逻辑和物理结构。 半导体芯片设计被划分为“箱”,这是设计的区域。 以这种方式,可以将半导体芯片设计“切片”成各种区域,然后将这些区域分配给各种电压电平。 每个仓可以被认为是电压岛。 设计中的电路可以添加到各个机箱中或从各个机箱中移除,从而增加或减少电路的速度和功率:如果将电路放入分配较高电压的箱体中,速度和功率会增加,速度和功率 如果将电路放置在具有较低电压的箱中,则减小。 还可以改变箱子的大小和位置。 通过迭代这些步骤,可以在满足速度限制和其他标准的同时满足最佳功耗。 本发明可应用于诸如退火放置工具的任何放置环境,其通过连续细化设计上的电路的位置并且其中可以中断放置过程以使逻辑的放置变化。