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    • 33. 发明申请
    • Multiple data rates in programmable logic device serial interface
    • 可编程逻辑器件串行接口中的多个数据速率
    • US20070011370A1
    • 2007-01-11
    • US11177007
    • 2005-07-08
    • Ramanand VenkataRakesh PatelChong Lee
    • Ramanand VenkataRakesh PatelChong Lee
    • G06F13/38
    • H03K19/17744
    • A serial interface for a programmable logic device supports a wide range of data rates by providing a first number of channels supporting a first range of data rates and a second number of channels supporting a second range of data rates. The first range of data rates is preferably lower than the second range of data rates and preferably the first number of channels is higher than the second number of channels which preferably is 1. For backward compatibility with existing devices, the first number of channels in each interface preferably is four. Each channel preferably includes a physical medium attachment module and a physical coding sublayer module. Each of the higher-speed channels in the second number of channels preferably also includes a clock management unit, while the lower-speed channels in the first number of channels preferably share one or more clock management units.
    • 用于可编程逻辑器件的串行接口通过提供支持第一范围的数据速率的第一数量的通道和支持第二数据速率范围的第二数量的通道来支持宽范围的数据速率。 数据速率的第一范围优选地低于数据速率的第二范围,并且优选地,第一数量的信道高于优选为1的信道的第二数量。为了与现有设备的向后兼容,每个信道中的第一数量的信道 界面最好是四。 每个通道优选地包括物理介质连接模块和物理编码子层模块。 第二数量的频道中的每一个较高频道优选地还包括时钟管理单元,而第一数量的频道中的较低速频道优选地共享一个或多个时钟管理单元。
    • 40. 发明授权
    • High performance output buffer
    • 高性能输出缓冲器
    • US6154059A
    • 2000-11-28
    • US199705
    • 1998-11-24
    • Sammy CheungJohn LamRakesh PatelTony Ngai
    • Sammy CheungJohn LamRakesh PatelTony Ngai
    • H03K19/003H03K19/0175H03K19/094
    • H03K19/00361
    • An output buffer has internal circuitry connected between an input node and an output node. The internal circuitry includes a quiet voltage supply connected to a first set of transistors of the internal circuitry and a noisy voltage supply connected to a second set of transistors of the internal circuitry. The noisy voltage supply is at a voltage level higher than the quiet voltage supply. The first set of transistors and the second set of transistors provide isolation between the noisy voltage supply and the quiet voltage supply. The first set of transistors and the second set of transistors also provide complete digital high and low internal signal levels by using at least one transistor operative to supplement the complete shut-off and turn-on of transistors of the first set of transistors and the second set of transistors. The output buffer also features a ground bounce circuit, a slew rate control circuit, a transition accelerator circuit, a Personal Computer Interface (PCI) compatibility circuit, and a PCI control circuit.
    • 输出缓冲器具有连接在输入节点和输出节点之间的内部电路。 内部电路包括连接到内部电路的第一组晶体管的静音电压源和连接到内部电路的第二组晶体管的噪声电压源。 嘈杂的电源电压处于高于静态电源的电压电平。 第一组晶体管和第二组晶体管提供噪声电压源和安静电源之间的隔离。 第一组晶体管和第二组晶体管还通过使用至少一个晶体管提供完整的数字高和低内部信号电平,该晶体管可操作地补充第一组晶体管的晶体管的完全截止和导通,第二组晶体管的第二组 一组晶体管。 输出缓冲器还具有接地反弹电路,压摆率控制电路,转换加速器电路,个人计算机接口(PCI)兼容性电路和PCI控制电路。