Organizations of logic modules in programmable logic devices
    1.
    发明授权
    Organizations of logic modules in programmable logic devices 有权
    可编程逻辑器件中逻辑模块的组织

    公开(公告)号:US07176718B1

    公开(公告)日:2007-02-13

    申请号:US11040457

    申请日:2005-01-21

    IPC分类号: H03K19/177

    CPC分类号: H03K19/17736 H03K19/17728

    摘要: A programmable logic element grouping for use in multiple instances on a programmable logic device includes more than the traditional number of logic elements sharing secondary signal (e.g., clock, clock enable, clear, etc.) selection circuitry. The logic elements in such a grouping are divided into at least two subgroups. Programmable interconnection circuitry is provided for selectively applying signals from outside the grouping and signals fed back from the logic elements in the grouping to primary inputs of the logic elements in the grouping. The programmable interconnection circuitry limits possible application of at least some of these signals to one or the other of the subgroups, and/or provides for possible application of at least some of these signals to a greater percentage of the primary inputs to one of the subgroups than to the other.

    摘要翻译: 在可编程逻辑器件上的多个实例中使用的可编程逻辑元件组合包括多于共享次级信号(例如,时钟,时钟使能,清零等)选择电路的传统数量的逻辑元件。 这种分组中的逻辑元素被划分为至少两个子组。 提供了可编程互连电路,用于选择性地将分组外的信号和分组中的逻辑元件反馈的信号分组中的逻辑元件的主要输入。 可编程互连电路将这些信号中的至少一些信号的可能应用限制到子组中的一个或另一个,并且/或提供这些信号中的至少一些信号到其中一个子组的较大百分比的主要输入的可能应用 比对方。