Flexible accumulator in digital signal processing circuitry
    1.
    发明授权
    Flexible accumulator in digital signal processing circuitry 失效
    灵活的累加器在数字信号处理电路中

    公开(公告)号:US07660841B2

    公开(公告)日:2010-02-09

    申请号:US10783789

    申请日:2004-02-20

    IPC分类号: G06F7/38

    CPC分类号: G06F7/5443 G06F2207/3884

    摘要: A multiplier-accumulator (MAC) block can be programmed to operate in one or more modes. When the MAC block implements at least one multiply-and-accumulate operation, the accumulator value can be zeroed without introducing clock latency or initialized in one clock cycle. To zero the accumulator value, the most significant bits (MSBs) of data representing zero can be input to the MAC block and sent directly to the add-subtract-accumulate unit. Alternatively, dedicated configuration bits can be set to clear the contents of a pipeline register for input to the add-subtract-accumulate unit.

    摘要翻译: 乘法器累加器(MAC)块可以编程为在一个或多个模式下运行。 当MAC块实现至少一个乘法和累加操作时,累加器值可以归零,而不会引入时钟延迟或在一个时钟周期内初始化。 为了使累加器值为零,代表零的数据的最高有效位(MSB)可以输入到MAC块,并直接发送到加减法累加单元。 或者,可以设置专用配置位以清除流水线寄存器的内容,以输入到加法累加单元。

    Flexible accumulator in digital signal processing circuitry
    2.
    发明授权
    Flexible accumulator in digital signal processing circuitry 有权
    灵活的累加器在数字信号处理电路中

    公开(公告)号:US09170775B2

    公开(公告)日:2015-10-27

    申请号:US12683686

    申请日:2010-01-07

    IPC分类号: G06F7/38 G06F7/544

    CPC分类号: G06F7/5443 G06F2207/3884

    摘要: A multiplier-accumulator (MAC) block can be programmed to operate in one or more modes. When the MAC block implements at least one multiply-and-accumulate operation, the accumulator value can be zeroed without introducing clock latency or initialized in one clock cycle. To zero the accumulator value, the most significant bits (MSBs) of data representing zero can be input to the MAC block and sent directly to the add-subtract-accumulate unit. Alternatively, dedicated configuration bits can be set to clear the contents of a pipeline register for input to the add-subtract-accumulate unit.

    摘要翻译: 乘法器累加器(MAC)块可以编程为在一个或多个模式下运行。 当MAC块实现至少一个乘法和累加操作时,累加器值可以归零,而不会引入时钟延迟或在一个时钟周期内初始化。 为了使累加器值为零,代表零的数据的最高有效位(MSB)可以输入到MAC块,并直接发送到加减法累加单元。 或者,可以设置专用配置位以清除流水线寄存器的内容,以输入到加法累加单元。

    FLEXIBLE ACCUMULATOR IN DIGITAL SIGNAL PROCESSING CIRCUITRY
    3.
    发明申请
    FLEXIBLE ACCUMULATOR IN DIGITAL SIGNAL PROCESSING CIRCUITRY 审中-公开
    数字信号处理电路中的灵活累加器

    公开(公告)号:US20100169404A1

    公开(公告)日:2010-07-01

    申请号:US12683686

    申请日:2010-01-07

    IPC分类号: G06F7/44 G06F7/42

    CPC分类号: G06F7/5443 G06F2207/3884

    摘要: A multiplier-accumulator (MAC) block can be programmed to operate in one or more modes. When the MAC block implements at least one multiply-and-accumulate operation, the accumulator value can be zeroed without introducing clock latency or initialized in one clock cycle. To zero the accumulator value, the most significant bits (MSBs) of data representing zero can be input to the MAC block and sent directly to the add-subtract-accumulate unit. Alternatively, dedicated configuration bits can be set to clear the contents of a pipeline register for input to the add-subtract-accumulate unit.

    摘要翻译: 乘法器累加器(MAC)块可以编程为在一个或多个模式下运行。 当MAC块实现至少一个乘法和累加操作时,累加器值可以归零,而不会引入时钟延迟或在一个时钟周期内初始化。 为了使累加器值为零,代表零的数据的最高有效位(MSB)可以输入到MAC块,并直接发送到加减法累加单元。 或者,可以设置专用配置位以清除流水线寄存器的内容,以输入到加法累加单元。

    Flexible accumulator in digital signal processing circuitry
    4.
    发明申请
    Flexible accumulator in digital signal processing circuitry 失效
    灵活的累加器在数字信号处理电路中

    公开(公告)号:US20050187997A1

    公开(公告)日:2005-08-25

    申请号:US10783789

    申请日:2004-02-20

    IPC分类号: G06F7/38 G06F7/544

    CPC分类号: G06F7/5443 G06F2207/3884

    摘要: A multiplier-accumulator (MAC) block can be programmed to operate in one or more modes. When the MAC block implements at least one multiply-and-accumulate operation, the accumulator value can be zeroed without introducing clock latency or initialized in one clock cycle. To zero the accumulator value, the most significant bits (MSBs) of data representing zero can be input to the MAC block and sent directly to the add-subtract-accumulate unit. Alternatively, dedicated configuration bits can be set to clear the contents of a pipeline register for input to the add-subtract-accumulate unit. The least significant bits (LSBs) can be tied to ground and sent along the feedback path. To initialize the accumulator value, the MSBs of the initialization value can be input to the MAC block and sent directly to the add-subtract-accumulate unit. The LSBs can be sent to another multiplier that performs a multiply-by-one operation before being sent to the add-subtract-accumulate unit.

    摘要翻译: 乘法器累加器(MAC)块可以编程为在一个或多个模式下运行。 当MAC块实现至少一个乘法和累加操作时,累加器值可以归零,而不会引入时钟延迟或在一个时钟周期内初始化。 为了使累加器值为零,代表零的数据的最高有效位(MSB)可以输入到MAC块,并直接发送到加减法累加单元。 或者,可以设置专用配置位以清除流水线寄存器的内容,以输入到加法累加单元。 最低有效位(LSB)可以连接到地并沿反馈路径发送。 要初始化累加器值,初始化值的MSB可以输入到MAC块,并直接发送到加减法累加单元。 可以将LSB发送到另一个乘法器,该乘法器在发送到加减法累加单元之前执行乘法运算。

    Sequential VCO phase output enabling circuit
    5.
    发明授权
    Sequential VCO phase output enabling circuit 有权
    顺序VCO相位输出使能电路

    公开(公告)号:US07362187B1

    公开(公告)日:2008-04-22

    申请号:US11259156

    申请日:2005-10-25

    IPC分类号: H03B27/00

    摘要: Circuits, methods, and apparatus that provide a sequential start-up of outputs of an oscillator following a power-up or restart. The outputs are gated by enable signals. These enable signals are derived sequentially, the first in a series being triggered by a specific output of the oscillator.

    摘要翻译: 在上电或重新启动后提供振荡器输出的顺序启动的电路,方法和装置。 输出由使能信号选通。 这些使能信号依次导出,串联中的第一个由振荡器的特定输出触发。

    System and method for design entry and synthesis in programmable logic devices
    6.
    发明授权
    System and method for design entry and synthesis in programmable logic devices 有权
    用于可编程逻辑器件中设计输入和合成的系统和方法

    公开(公告)号:US07634752B2

    公开(公告)日:2009-12-15

    申请号:US11592734

    申请日:2006-11-03

    IPC分类号: G06F17/50

    摘要: A system and method facilitates the implementation of analog circuitry in electronic programmable devices. A user can specify user measurable parameters for analog features of the circuit, without requiring knowledge of the internal way in which those analog circuit are implemented in the programmable device to achieve desired properties of the analog parameters of interest. The implementation can be performed in different devices which may implement the analog circuit in vastly different ways.

    摘要翻译: 一种系统和方法有助于在电子可编程器件中实现模拟电路。 用户可以为电路的模拟特征指定用户可测量的参数,而不需要知道在可编程设备中实现那些模拟电路的内部方式以获得感兴趣的模拟参数的所需属性。 该实现可以在可以以非常不同的方式实现模拟电路的不同设备中执行。

    System and method for design entry and synthesis in programmable logic devices
    8.
    发明申请
    System and method for design entry and synthesis in programmable logic devices 有权
    用于可编程逻辑器件中设计输入和合成的系统和方法

    公开(公告)号:US20050088867A1

    公开(公告)日:2005-04-28

    申请号:US10353816

    申请日:2003-01-28

    摘要: A system and method facilitates the implementation of analog circuitry in electronic programmable devices. A user can specify user measurable parameters for analog features of the circuit, without requiring knowledge of the internal way in which those analog circuit are implemented in the programmable device to achieve desired properties of the analog parameters of interest. The implementation can be performed in different devices which may implement the analog circuit in vastly different ways.

    摘要翻译: 一种系统和方法有助于在电子可编程器件中实现模拟电路。 用户可以为电路的模拟特征指定用户可测量的参数,而不需要知道在可编程设备中实现那些模拟电路的内部方式以获得感兴趣的模拟参数的所需属性。 该实现可以在可以以非常不同的方式实现模拟电路的不同设备中执行。

    PLL/DLL circuitry programmable for high bandwidth and low bandwidth applications
    9.
    发明申请
    PLL/DLL circuitry programmable for high bandwidth and low bandwidth applications 失效
    PLL / DLL电路可编程为高带宽和低带宽应用

    公开(公告)号:US20050017775A1

    公开(公告)日:2005-01-27

    申请号:US10921453

    申请日:2004-08-18

    申请人: Greg Starr

    发明人: Greg Starr

    摘要: An integrated circuit including a phase lock loop or delay lock loop) (PLL/DLL) Circuit comprising: a clock input terminal for accepting a clock signal; a phase/frequency detector (PFD) circuit including a reference clock input connected to the clock input terminal and including a PFD feedback input and including a PFD output; a charge pump (CP) circuit; at least one external feedforward output terminal; a loop filter (LF); a loop controlled signal source (LCSS); and a feedback circuit connected between a LCSS output and the PFD feedback input, the feedback circuit including, an external feedback input terminal; first frequency selection circuitry to produce a first programmable feedback signal; second frequency selection circuitry to produce a second feedback signal; and multiplex circuitry connected with the LCSS output, the external feedback input terminal and the first and second frequency selection circuitry, to cause either the first programmable feedback signal or the second programmable feedback signal to be coupled to the PFD feedback input.

    摘要翻译: 一种包括锁相环或延迟锁环的集成电路(PLL / DLL)电路,包括:用于接收时钟信号的时钟输入端; 相位/频率检测器(PFD)电路,包括连接到时钟输入端的参考时钟输入,并包括PFD反馈输入并包括PFD输出; 电荷泵(CP)电路; 至少一个外部前馈输出端子; 环路滤波器(LF); 环路控制信号源(LCSS); 以及连接在LCSS输出和PFD反馈输入之间的反馈电路,所述反馈电路包括外部反馈输入端子; 第一频率选择电路,用于产生第一可编程反馈信号; 第二频率选择电路以产生第二反馈信号; 以及与LCSS输出端连接的复用电路,外部反馈输入端和第一和第二频率选择电路,以使第一可编程反馈信号或第二可编程反馈信号耦合到PFD反馈输入。

    PLL/DLL circuitry programmable for high bandwidth and low bandwidth applications
    10.
    发明授权
    PLL/DLL circuitry programmable for high bandwidth and low bandwidth applications 失效
    PLL / DLL电路可编程为高带宽和低带宽应用

    公开(公告)号:US07023251B2

    公开(公告)日:2006-04-04

    申请号:US10921453

    申请日:2004-08-18

    申请人: Greg Starr

    发明人: Greg Starr

    IPC分类号: H03L7/06

    摘要: An integrated circuit including a phase lock loop or delay lock loop) (PLL/DLL) circuit comprising: a clock input terminal for accepting a clock signal; a phase/frequency detector (PFD) circuit including a reference clock input connected to the clock input terminal and including a PFD feedback input and including a PFD output; a charge pump (CP) circuit; at least one external feedforward output terminal; a loop filter (LF); a loop controlled signal source (LCSS); and a feedback circuit connected between a LCSS output and the PFD feedback input, the feedback circuit including, an external feedback input terminal; first frequency selection circuitry to produce a first programmable feedback signal; second frequency selection circuitry to produce a second feedback signal; and multiplex circuitry connected with the LCSS output, the external feedback input terminal and the first and second frequency selection circuitry, to cause either the first programmable feedback signal or the second programmable feedback signal to be coupled to the PFD feedback input.

    摘要翻译: 一种包括锁相环或延迟锁环的集成电路(PLL / DLL)电路,包括:用于接收时钟信号的时钟输入端; 相位/频率检测器(PFD)电路,包括连接到时钟输入端的参考时钟输入,并包括PFD反馈输入并包括PFD输出; 电荷泵(CP)电路; 至少一个外部前馈输出端子; 环路滤波器(LF); 环路控制信号源(LCSS); 以及连接在LCSS输出和PFD反馈输入之间的反馈电路,所述反馈电路包括外部反馈输入端子; 第一频率选择电路,用于产生第一可编程反馈信号; 第二频率选择电路以产生第二反馈信号; 以及与LCSS输出端连接的复用电路,外部反馈输入端和第一和第二频率选择电路,以使第一可编程反馈信号或第二可编程反馈信号耦合到PFD反馈输入。