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    • 1. 发明授权
    • Programmable interrupt routing system
    • 可编程中断路由系统
    • US08838852B1
    • 2014-09-16
    • US13415671
    • 2012-03-08
    • Bert SullamHaneef Mohammed
    • Bert SullamHaneef Mohammed
    • G06F13/24
    • G06F13/24
    • A method and apparatus to operate programmable routing logic comprise receiving, from a fixed function block, a first request, responsive to the first request, forwarding the first request to a first resource of one or more controllers, the first resource allocated to the fixed function block. The method and apparatus further comprise receiving, from a programmable function block, a second request, and responsive to the second request, forwarding the second request to a second resource of the one or more controllers, the second resource allocated to the programmable function block.
    • 一种用于操作可编程路由逻辑的方法和装置包括从固定功能块接收响应于第一请求的第一请求,将第一请求转发给一个或多个控制器的第一资源,分配给固定功能的第一资源 块。 所述方法和装置还包括从可编程功能块接收第二请求,并且响应于所述第二请求,将所述第二请求转发到所述一个或多个控制器的第二资源,所述第二资源被分配给所述可编程功能块。
    • 3. 发明授权
    • Hybrid product term and look-up table-based programmable logic device with improved speed and area efficiency
    • 混合产品术语和查找表型可编程逻辑器件,具有改进的速度和面积效率
    • US06201408B1
    • 2001-03-13
    • US09087654
    • 1998-05-30
    • Kevin B. SkahillHaneef Mohammed
    • Kevin B. SkahillHaneef Mohammed
    • G06F738
    • H03K19/17736H03K19/17704H03K19/17728H03K19/17792
    • A programmable device architecture that may improve functionality over look-up table based or product-term based programmable logic devices and that may provide for the efficient implementation of user-programmable logic designs resulting in implementations that may require less area and may provide increased performance. A product-term array (either fully or partially populated) may be placed in front of a number of LUT-based macrocells, utilizing the available routing wires as wordlines to form the product terms. The present invention takes advantage of existing routing to do more than just route signals from one point to another by allowing logic to be implemented in the same die area. The result is logic implementations that may require fewer total macrocells, fewer levels of macrocells, and fewer point-to-point nets (because logic density increases). The present invention may apply to FPGAs comprising an array of macrocells and to FPGAs comprising an array of clustered macrocells. The present invention may also be used with CPLDs by replacing the product term matrix, OR gates, and macrocells with LUT-based macrocells. The present invention may be used to implement logic functions in fewer macrocells than may be implemented in either LUT-based macrocells or product-term based macrocells alone.
    • 可编程设备架构可以改进基于查找表或基于产品项的可编程逻辑器件的功能,并且可以提供用户可编程逻辑设计的有效实现,从而实现可能需要较少面积并且可以提供增加的性能的实现。 可以将产品术语阵列(完全或部分填充)放置在多个基于LUT的宏单元的前面,利用可用的路由线作为字线形成产品术语。 本发明利用现有的路由来执行不仅仅是通过允许逻辑在相同的管芯区域中实现的从一个点到另一个点的路由信号。 结果是可能需要更少的总宏单元,更少级别的宏单元以及更少的点对点网络(因为逻辑密度增加)的逻辑实现。 本发明可以应用于包括宏小区阵列的FPGA和包含聚簇宏小区阵列的FPGA。 本发明还可以通过用基于LUT的宏小区替换产品项矩阵,或门和宏小区来与CPLD一起使用。 本发明可以用于在比可以在基于LUT的宏小区或基于产品项的宏小区中实现的更少的宏小区中实现逻辑功能。