High-performance memory interface circuit architecture
    32.
    发明授权
    High-performance memory interface circuit architecture 有权
    高性能存储器接口电路架构

    公开(公告)号:US08305121B1

    公开(公告)日:2012-11-06

    申请号:US13168499

    申请日:2011-06-24

    IPC分类号: H03L7/00

    摘要: A programmable memory interface circuit includes a programmable DLL delay chain, a phase offset control circuit and a programmable DQS delay chain. The DLL delay chain uses a set of serially connected delay cells, a programmable switch, a phase detector and a digital counter to generate a coarse phase shift control setting. The coarse phase shift control setting is then used to pre-compute a static residual phase shift control setting or generate a dynamic residual phase shift control setting, one of which is chosen by the phase offset control circuit to be added to or subtracted from the coarse phase shift control setting to generate a fine phase shift control setting. The coarse and fine phase shift control settings work in concert to generate a phase-delayed DQS signal that is center-aligned to its associated DQ signals.

    摘要翻译: 可编程存储器接口电路包括可编程DLL延迟链,相位偏移控制电路和可编程DQS延迟链。 DLL延迟链使用一组串行连接的延迟单元,可编程开关,相位检测器和数字计数器来产生粗略的相移控制设置。 然后,粗略的相移控制设置用于预先计算静态残留相移控制设置或生成动态残留相移控制设置,其中一个由相位偏移控制电路选择以被加到或从粗略 相移控制设置,以产生精细的相移控制设置。 粗调和精细相移控制设置一致地产生相位延迟的DQS信号,其中心对准其相关联的DQ信号。

    High-performance memory interface circuit architecture
    33.
    发明授权
    High-performance memory interface circuit architecture 有权
    高性能存储器接口电路架构

    公开(公告)号:US07969215B1

    公开(公告)日:2011-06-28

    申请号:US12467681

    申请日:2009-05-18

    IPC分类号: H03L7/00

    摘要: A programmable memory interface circuit includes a programmable DLL delay chain, a phase offset control circuit and a programmable DQS delay chain. The DLL delay chain uses a set of serially connected delay cells, a programmable switch, a phase detector and a digital counter to generate a coarse phase shift control setting. The coarse phase shift control setting is then used to pre-compute a static residual phase shift control setting or generate a dynamic residual phase shift control setting, one of which is chosen by the phase offset control circuit to be added to or subtracted from the coarse phase shift control setting to generate a fine phase shift control setting. The coarse and fine phase shift control settings work in concert to generate a phase-delayed DQS signal that is center-aligned to its associated DQ signals.

    摘要翻译: 可编程存储器接口电路包括可编程DLL延迟链,相位偏移控制电路和可编程DQS延迟链。 DLL延迟链使用一组串行连接的延迟单元,可编程开关,相位检测器和数字计数器来产生粗略的相移控制设置。 然后,粗略的相移控制设置用于预先计算静态残留相移控制设置或生成动态残留相移控制设置,其中一个由相位偏移控制电路选择以被加到或从粗略 相移控制设置,以产生精细的相移控制设置。 粗调和精细相移控制设置一致地产生相位延迟的DQS信号,其中心对准其相关联的DQ信号。

    Multiple data rate interface architecture
    35.
    发明授权
    Multiple data rate interface architecture 失效
    多数据速率接口架构

    公开(公告)号:US06946872B1

    公开(公告)日:2005-09-20

    申请号:US10623394

    申请日:2003-07-18

    IPC分类号: H03K19/177

    摘要: Method and circuitry for implementing high speed multiple-data-rate interface architectures for programmable logic devices. The invention partitions I/O pins and their corresponding registers into independent multiple-data rate I/O modules each having at least one pin dedicated to the strobe signal DQS and others to DQ data signals. The modular architecture facilitates pin migration from one generation of PLDs to the next larger generation.

    摘要翻译: 用于实现可编程逻辑器件的高速多数据速率接口架构的方法和电路。 本发明将I / O引脚及其对应的寄存器分为独立的多数据速率I / O模块,每个I / O引脚具有至少一个专用于选通信号DQS的引脚和其他引脚用于DQ数据信号。 模块化架构便于引脚从一代PLD迁移到下一代。

    PROGRAMMABLE HIGH-SPEED INTERFACE
    38.
    发明申请
    PROGRAMMABLE HIGH-SPEED INTERFACE 有权
    可编程高速接口

    公开(公告)号:US20110227606A1

    公开(公告)日:2011-09-22

    申请号:US13149168

    申请日:2011-05-31

    IPC分类号: H03K19/0175 H03K3/00

    摘要: Methods and apparatus for providing either high-speed, or lower-speed, flexible inputs and outputs. An input and output structure having a high-speed input, a high-speed output, a low or moderate speed input, and an low or moderate speed output is provided. One of the input and output circuits are selected and the others are deselected. The high-speed input and output circuits are comparatively simple, in one example having only a clear signal for a control line input, and are able to interface to lower speed circuitry inside the core of an integrated circuit. The low or moderate speed input and output circuits are more flexible, for example, having preset, enable, and clear as control line inputs, and are able to support JTAG boundary testing. These parallel high and lower speed circuits are user selectable such that the input output structure is optimized between speed and functionality depending on the requirements of the application.

    摘要翻译: 提供高速或低速灵活的输入和输出的方法和设备。 提供具有高速输入,高速输出,低速或中速输入以及低速或中速输出的输入和输出结构。 选择其中一个输入和输出电路,并取消选择其他电路。 高速输入和输出电路相对简单,在一个示例中,仅具有用于控制线输入的清除信号,并且能够与集成电路的核心内的低速电路接口。 低速或中速输入和输出电路比较灵活,例如具有预置,使能和清除作为控制线路输入,并且能够支持JTAG边界测试。 这些并行高速和低速电路是用户可选择的,使得输入输出结构根据应用的要求在速度和功能之间进行优化。

    PROGRAMMABLE HIGH-SPEED INTERFACE
    39.
    发明申请
    PROGRAMMABLE HIGH-SPEED INTERFACE 有权
    可编程高速接口

    公开(公告)号:US20080186056A1

    公开(公告)日:2008-08-07

    申请号:US11830831

    申请日:2007-07-30

    IPC分类号: H03K19/0175

    摘要: Methods and apparatus for providing either high-speed, or lower-speed, flexible inputs and outputs. An input and output structure having a high-speed input, a high-speed output, a low or moderate speed input, and an low or moderate speed output is provided. One of the input and output circuits are selected and the others are deselected. The high-speed input and output circuits are comparatively simple, in one example having only a clear signal for a control line input, and are able to interface to lower speed circuitry inside the core of an integrated circuit. The low or moderate speed input and output circuits are more flexible, for example, having preset, enable, and clear as control line inputs, and are able to support JTAG boundary testing. These parallel high and lower speed circuits are user selectable such that the input output structure is optimized between speed and functionality depending on the requirements of the application.

    摘要翻译: 提供高速或低速灵活的输入和输出的方法和设备。 提供具有高速输入,高速输出,低速或中速输入以及低速或中速输出的输入和输出结构。 选择其中一个输入和输出电路,并取消选择其他电路。 高速输入和输出电路相当简单,在一个示例中,仅具有用于控制线路输入的清除信号,并且能够与集成电路的核心内的低速电路接口。 低速或中速输入和输出电路比较灵活,例如具有预置,使能和清除作为控制线路输入,并且能够支持JTAG边界测试。 这些并行高速和低速电路是用户可选择的,使得输入输出结构根据应用的要求在速度和功能之间进行优化。

    Programmable high speed interface
    40.
    发明申请
    Programmable high speed interface 有权
    可编程高速接口

    公开(公告)号:US20060220703A1

    公开(公告)日:2006-10-05

    申请号:US11446483

    申请日:2006-06-02

    IPC分类号: H03B1/00

    摘要: Methods and apparatus for providing either high-speed, or lower-speed, flexible inputs and outputs. An input and output structure having a high-speed input, a high-speed output, a low or moderate speed input, and an low or moderate speed output is provided. One of the input and output circuits are selected and the others are deselected. The high-speed input and output circuits are comparatively simple, in one example having only a clear signal for a control line input, and are able to interface to lower speed circuitry inside the core of an integrated circuit. The low or moderate speed input and output circuits are more flexible, for example, having preset, enable, and clear as control line inputs, and are able to support JTAG boundary testing. These parallel high and lower speed circuits are user selectable such that the input output structure is optimized between speed and functionality depending on the requirements of the application.

    摘要翻译: 提供高速或低速灵活的输入和输出的方法和设备。 提供具有高速输入,高速输出,低速或中速输入以及低速或中速输出的输入和输出结构。 选择其中一个输入和输出电路,并取消选择其他电路。 高速输入和输出电路相对简单,在一个示例中,仅具有用于控制线输入的清除信号,并且能够与集成电路的核心内的低速电路接口。 低速或中速输入和输出电路比较灵活,例如具有预置,使能和清除作为控制线路输入,并且能够支持JTAG边界测试。 这些并行高速和低速电路是用户可选择的,使得输入输出结构根据应用的要求在速度和功能之间进行优化。