Digital signal processing circuit blocks with support for systolic finite-impulse-response digital filtering
    3.
    发明授权
    Digital signal processing circuit blocks with support for systolic finite-impulse-response digital filtering 有权
    数字信号处理电路块,支持收缩有限脉冲响应数字滤波

    公开(公告)号:US08458243B1

    公开(公告)日:2013-06-04

    申请号:US12716378

    申请日:2010-03-03

    IPC分类号: G06F7/38 G06F7/32

    CPC分类号: G06F7/5443

    摘要: Digital signal processing (“DSP”) block circuitry on an integrated circuit (“IC”) is adapted for use (e.g., in multiple instances of the DSP block circuitry on the IC) for implementing finite-impulse-response (“FIR”) digital filters in systolic form. Each DSP block may include (1) first and second multiplier circuitry and (2) adder circuitry for adding (a) outputs of the multipliers and (b) signals chained in from a first other instance of the DSP block circuitry. Systolic delay circuitry is provided for either the outputs of the first multiplier (upstream from the adder) or at least one of the sets of inputs to the first multiplier. Additional systolic delay circuitry is provided for outputs of the adder, which are chained out to a second other instance of the DSP block circuitry.

    摘要翻译: 集成电路(“IC”)上的数字信号处理(“DSP”)块电路适用于(例如,在IC上的DSP块电路的多个实例中),用于实现有限脉冲响应(“FIR”) 数字滤波器收缩形式。 每个DSP块可以包括(1)第一和第二乘法器电路和(2)加法电路,用于将(a)乘法器的输出和(b)从DSP块电路的第一其他实例链接的信号相加。 为第一乘法器的输出(加法器的上游)或第一乘法器的输入集合中的至少一个提供收缩延迟电路。 为加法器的输出提供额外的收缩延迟电路,其被链接到DSP块电路的另一个另外的实例。

    Method for configuring a finite impulse response filter in a programmable logic device
    4.
    发明授权
    Method for configuring a finite impulse response filter in a programmable logic device 有权
    用于在可编程逻辑器件中配置有限脉冲响应滤波器的方法

    公开(公告)号:US08386550B1

    公开(公告)日:2013-02-26

    申请号:US11533482

    申请日:2006-09-20

    IPC分类号: G06F17/10

    CPC分类号: H03H17/06

    摘要: A hybrid FIR filter includes a plurality of FIR filter units arranged as Direct Form FIR filters, connected together in an arrangement similar to a Transpose Form FIR filter. The hybrid filter arrangement may be used to configure a larger FIR filter in a programmable logic device having one or more specialized functional blocks, incorporating multipliers and adders, that are particularly well-suited for configuration as small Direct Form FIR filters.

    摘要翻译: 混合FIR滤波器包括布置成直接形式FIR滤波器的多个FIR滤波器单元,其以类似于转置形式FIR滤波器的布置连接在一起。 混合滤波器布置可以用于在具有一个或多个专用功能块(包括乘法器和加法器)的可编程逻辑器件中配置更大的FIR滤波器,其特别适合于作为小直接形式FIR滤波器的配置。