Efficient statistical timing analysis of circuits
    1.
    发明授权
    Efficient statistical timing analysis of circuits 有权
    电路的有效统计时序分析

    公开(公告)号:US07689954B2

    公开(公告)日:2010-03-30

    申请号:US11420322

    申请日:2006-05-25

    IPC分类号: G06F17/50

    摘要: Statistical timing analysis methods for circuits are described which compensate for circuit elements having correlated timing delays with a high degree of computational efficiency. An quadratic timing model is used to represent each delay element along a circuit path, wherein each element's delay has a first-order relationship to local variations and a second-order relationship to global variations. Propagation of the modeled delays through the circuit is efficiently done via straightforward ADD operations where an input propagates through another element in a circuit path, and via a MAX operation (or an approximation thereof) where two or more inputs merge at an intersection. The inputs to the MAX operator can be tested for gaussianity, and can be processed by the MAX operation (or its approximation) if they are substantially gaussian. Otherwise, they may be stored in a tuple for processing at later points along the circuit path.

    摘要翻译: 描述了用于补偿具有高计算效率的具有相关定时延迟的电路元件的电路的统计时序分析方法。 二次定时模型用于沿着电路路径表示每个延迟元件,其中每个元件的延迟与局部变化和与全局变化的二阶关系具有一级关系。 经由电路的建模延迟的传播通过简单的ADD操作有效地进行,其中输入传播通过电路路径中的另一元件,并且经由其中两个或多个输入在交叉点合并的MAX操作(或其近似)。 可以对MAX运算符的输入进行高斯测试,如果MAX操作基本为高斯,则可以通过MAX操作(或其近似)进行处理。 否则,它们可以存储在元组中,以便在沿着电路路径的稍后点进行处理。

    EFFICIENT STATISTICAL TIMING ANALYSIS OF CIRCUITS
    2.
    发明申请
    EFFICIENT STATISTICAL TIMING ANALYSIS OF CIRCUITS 有权
    电路的有效统计时序分析

    公开(公告)号:US20070277134A1

    公开(公告)日:2007-11-29

    申请号:US11420322

    申请日:2006-05-25

    IPC分类号: G06F17/50

    摘要: Statistical timing analysis methods for circuits are described which compensate for circuit elements having correlated timing delays with a high degree of computational efficiency. An quadratic timing model is used to represent each delay element along a circuit path, wherein each element's delay has a first-order relationship to local variations and a second-order relationship to global variations. Propagation of the modeled delays through the circuit is efficiently done via straightforward ADD operations where an input propagates through another element in a circuit path, and via a MAX operation (or an approximation thereof) where two or more inputs merge at an intersection. The inputs to the MAX operator can be tested for gaussianity, and can be processed by the MAX operation (or its approximation) if they are substantially gaussian. Otherwise, they may be stored in a tuple for processing at later points along the circuit path.

    摘要翻译: 描述了用于补偿具有高计算效率的具有相关定时延迟的电路元件的电路的统计时序分析方法。 二次定时模型用于沿着电路路径表示每个延迟元件,其中每个元件的延迟与局部变化和与全局变化的二阶关系具有一级关系。 经由电路的建模延迟的传播通过简单的ADD操作有效地进行,其中输入传播通过电路路径中的另一元件,并且经由其中两个或多个输入在交叉点合并的MAX操作(或其近似)。 可以对MAX运算符的输入进行高斯测试,如果MAX操作基本为高斯,则可以通过MAX操作(或其近似)进行处理。 否则,它们可以存储在元组中,以便在沿着电路路径的稍后点进行处理。

    Statistical iterative timing analysis of circuits having latches and/or feedback loops
    3.
    发明授权
    Statistical iterative timing analysis of circuits having latches and/or feedback loops 有权
    具有锁存器和/或反馈回路的电路的统计迭代时序分析

    公开(公告)号:US08341569B2

    公开(公告)日:2012-12-25

    申请号:US12842268

    申请日:2010-07-23

    IPC分类号: G06F17/50

    CPC分类号: G06F17/5031

    摘要: Statistical timing analysis methods for circuits having latches and feedback loops are described wherein the circuit yield, and/or the critical cycle mean (the largest cycle mean among all loops in the circuit), may be iteratively calculated with high speed and accuracy, thereby allowing their ready usage in the analysis and validation of proposed circuit designs.

    摘要翻译: 描述了具有锁存器和反馈回路的电路的统计时序分析方法,其中电路产量和/或临界循环平均值(电路中所有回路中的最大周期平均值)可以以高速度和精确度迭代地计算,从而允许 它们在拟议的电路设计的分析和验证中的准备使用。

    STATISTICAL ITERATIVE TIMING ANALYSIS OF CIRCUITS HAVING LATCHES AND/OR FEEDBACK LOOPS
    4.
    发明申请
    STATISTICAL ITERATIVE TIMING ANALYSIS OF CIRCUITS HAVING LATCHES AND/OR FEEDBACK LOOPS 有权
    具有锁存器和/或反馈灯的电路的统计迭代时序分析

    公开(公告)号:US20100313177A1

    公开(公告)日:2010-12-09

    申请号:US12842268

    申请日:2010-07-23

    IPC分类号: G06F9/455

    CPC分类号: G06F17/5031

    摘要: Statistical timing analysis methods for circuits having latches and feedback loops are described wherein the circuit yield, and/or the critical cycle mean (the largest cycle mean among all loops in the circuit), may be iteratively calculated with high speed and accuracy, thereby allowing their ready usage in the analysis and validation of proposed circuit designs.

    摘要翻译: 描述了具有锁存器和反馈回路的电路的统计时序分析方法,其中电路产量和/或临界循环平均值(电路中所有回路中的最大周期平均值)可以以高速度和精确度迭代地计算,从而允许 它们在拟议的电路设计的分析和验证中的准备使用。

    Statistical iterative timing analysis of circuits having latches and/or feedback loops
    5.
    发明授权
    Statistical iterative timing analysis of circuits having latches and/or feedback loops 有权
    具有锁存器和/或反馈回路的电路的统计迭代时序分析

    公开(公告)号:US07793245B2

    公开(公告)日:2010-09-07

    申请号:US11966265

    申请日:2007-12-28

    IPC分类号: G06F17/50 G06F9/45

    CPC分类号: G06F17/5031

    摘要: Statistical timing analysis methods for circuits having latches and feedback loops are described wherein the circuit yield, and/or the critical cycle mean (the largest cycle mean among all loops in the circuit), may be iteratively calculated with high speed and accuracy, thereby allowing their ready usage in the analysis and validation of proposed circuit designs.

    摘要翻译: 描述了具有锁存器和反馈回路的电路的统计时序分析方法,其中电路产量和/或临界循环平均值(电路中所有回路中的最大周期平均值)可以以高速度和精确度迭代地计算,从而允许 它们在拟议的电路设计的分析和验证中的准备使用。

    STATISTICAL ITERATIVE TIMING ANALYSIS OF CIRCUITS HAVING LATCHES AND/OR FEEDBACK LOOPS
    6.
    发明申请
    STATISTICAL ITERATIVE TIMING ANALYSIS OF CIRCUITS HAVING LATCHES AND/OR FEEDBACK LOOPS 有权
    具有锁存器和/或反馈灯的电路的统计迭代时序分析

    公开(公告)号:US20090055785A1

    公开(公告)日:2009-02-26

    申请号:US11966265

    申请日:2007-12-28

    IPC分类号: G06F17/50

    CPC分类号: G06F17/5031

    摘要: Statistical timing analysis methods for circuits having latches and feedback loops are described wherein the circuit yield, and/or the critical cycle mean (the largest cycle mean among all loops in the circuit), may be iteratively calculated with high speed and accuracy, thereby allowing their ready usage in the analysis and validation of proposed circuit designs.

    摘要翻译: 描述了具有锁存器和反馈回路的电路的统计时序分析方法,其中电路产量和/或临界循环平均值(电路中所有回路中的最大周期平均值)可以以高速度和精确度迭代地计算,从而允许 它们在拟议的电路设计的分析和验证中的准备使用。