Circuit and method for generating a clock signal
    1.
    发明授权
    Circuit and method for generating a clock signal 有权
    用于产生时钟信号的电路和方法

    公开(公告)号:US06960950B2

    公开(公告)日:2005-11-01

    申请号:US10400147

    申请日:2003-03-25

    CPC分类号: H03L7/085 H03L7/0997

    摘要: In some embodiments, a circuit includes an oscillator circuit and a control circuit. The oscillator circuit generates a clock signal and includes a plurality of selectable delay circuits. The control circuit receives the clock signal from the oscillator and a reference signal. The control circuit provides a control signal to the oscillator circuit to activate one or more of the plurality of selectable delay circuits to change the frequency of the clock signal. In some embodiments, a method includes generating a clock signal in an oscillator circuit, processing the clock signal to generate a control signal, and activating one or more of a plurality of selectable delay circuits in the oscillator circuit, in response to the control signal.

    摘要翻译: 在一些实施例中,电路包括振荡器电路和控制电路。 振荡器电路产生时钟信号并且包括多个可选延迟电路。 控制电路接收来自振荡器的时钟信号和参考信号。 控制电路向振荡器电路提供控制信号以激活多个可选延迟电路中的一个或多个以改变时钟信号的频率。 在一些实施例中,一种方法包括:响应于控制信号,在振荡器电路中产生时钟信号,处理时钟信号以产生控制信号,以及激活振荡器电路中的多个可选延迟电路中的一个或多个。

    Circuit and method for generating a clock signal
    2.
    发明授权
    Circuit and method for generating a clock signal 失效
    用于产生时钟信号的电路和方法

    公开(公告)号:US06958658B2

    公开(公告)日:2005-10-25

    申请号:US10400146

    申请日:2003-03-25

    IPC分类号: H03B1/00 H03B27/00

    CPC分类号: H03K3/0315

    摘要: In some embodiments, a circuit includes an oscillator circuit, a control circuit, and a synchronization circuit. The oscillator circuit generates a clock signal and includes a selectable delay circuit. The control circuit receives the clock signal from the oscillator and a reference signal. The control circuit provides a control signal to the synchronization circuit which provides a control signal that has been synchronized to the oscillator circuit to activate the selectable delay circuit to change the frequency of the clock signal. In some embodiments, a method includes generating a clock signal in an oscillator circuit, and synchronizing activation of a selectable delay circuit in the oscillator circuit to a local clock signal.

    摘要翻译: 在一些实施例中,电路包括振荡器电路,控制电路和同步电路。 振荡器电路产生时钟信号并包括可选延迟电路。 控制电路接收来自振荡器的时钟信号和参考信号。 控制电路向同步电路提供控制信号,其提供已经与振荡器电路同步的控制信号,以激活可选择的延迟电路以改变时钟信号的频率。 在一些实施例中,一种方法包括在振荡器电路中产生时钟信号,以及将振荡器电路中的可选延迟电路的激活同步到本地时钟信号。

    Transaction layer link down handling for PCI express
    3.
    发明授权
    Transaction layer link down handling for PCI express 有权
    用于PCI Express的事务层链接处理

    公开(公告)号:US07191255B2

    公开(公告)日:2007-03-13

    申请号:US10975132

    申请日:2004-10-27

    IPC分类号: G06F3/00

    CPC分类号: G06F13/423

    摘要: Transaction layer link down handling for Peripheral Component Interconnect (PCI) Express. A link between an input/output (I/O) controller port of an I/O controller and a device port of a device is initialized, wherein the link includes a physical layer, a data link layer, and a transaction layer. The transaction layer is restored after a data link down condition without software intervention.

    摘要翻译: 外围组件互连(PCI)Express的事务层链接处理。 初始化I / O控制器的输入/输出(I / O)控制器端口和设备的设备端口之间的链接,其中链路包括物理层,数据链路层和事务层。 在没有软件干预的情况下,在数据链路关闭状态之后,事务层被恢复。

    Circuit and method for generating a clock signal
    4.
    发明授权
    Circuit and method for generating a clock signal 有权
    用于产生时钟信号的电路和方法

    公开(公告)号:US06911872B2

    公开(公告)日:2005-06-28

    申请号:US10400145

    申请日:2003-03-25

    CPC分类号: H03L7/0997 H03L7/085

    摘要: In some embodiments, a circuit includes an oscillator circuit and a control circuit. The oscillator circuit generates a clock signal and includes a selectable delay circuit. The control circuit receives the clock signal from the oscillator and a reference signal. The control circuit provides a control signal to the oscillator circuit to activate the selectable delay circuit to change the frequency of the clock signal. In some embodiments, a method includes generating a clock signal in an oscillator circuit, processing the clock signal to generate a control signal, and activating a selectable delay circuit in the oscillator circuit, in response to the control signal.

    摘要翻译: 在一些实施例中,电路包括振荡器电路和控制电路。 振荡器电路产生时钟信号并包括可选延迟电路。 控制电路接收来自振荡器的时钟信号和参考信号。 控制电路向振荡器电路提供控制信号以启动可选择的延迟电路以改变时钟信号的频率。 在一些实施例中,一种方法包括响应于控制信号在振荡器电路中产生时钟信号,处理时钟信号以产生控制信号,以及激活振荡器电路中的可选延迟电路。

    Method and apparatus for dynamic clock gating
    5.
    发明授权
    Method and apparatus for dynamic clock gating 有权
    动态时钟门控的方法和装置

    公开(公告)号:US06232820B1

    公开(公告)日:2001-05-15

    申请号:US09332764

    申请日:1999-06-14

    IPC分类号: H03K1704

    摘要: According to one embodiment, an integrated circuit is disclosed that includes a plurality of functional unit blocks (FUBs), wherein each of the plurality of FUBs further includes a clock gated circuit and a clock gating circuit. The clock gating circuit immediately ungates clock signals to be received at the clock gated circuit whenever the clock gated circuit is to transition from an idle state to a non-idle state. According to a further embodiment, the clock gating circuit also immediately gates the clock signals whenever the clock gated circuit is to transition from a non-idle state to the idle state.

    摘要翻译: 根据一个实施例,公开了一种集成电路,其包括多个功能单元块(FUB),其中多个FUB中的每一个还包括时钟选通电路和时钟门控电路。 只要时钟门控电路从空闲状态转换到非空闲状态,时钟门控电路立即断开要在时钟门控电路接收的时钟信号。 根据另一实施例,每当时钟门控电路要从非空闲状态转换到空闲状态时,时钟选通电路也立即门控时钟信号。