Point-to-point phase-tolerant communication
    1.
    发明授权
    Point-to-point phase-tolerant communication 失效
    点对点相容通信

    公开(公告)号:US5623644A

    公开(公告)日:1997-04-22

    申请号:US296019

    申请日:1994-08-25

    CPC分类号: G06F15/17381

    摘要: A unidirectional point-to-point communication apparatus for communicating messages between two computing resources irrespective of the phase of the messages, length of a communication path between the two computing resources and internal speed of the two computing resources. The communication apparatus has a high speed communication bus coupling a transmitter and a receiver for transmitting the messages from the transmitter to the receiver. A high speed communication clock is coupled to the bus and the receiver for timing the messages transmitted on the high speed communication bus between transmitter and the receiver. A large data buffer is coupled to the high speed communication bus after the receiver for storing messages transmitted between the transmitter and the receiver. A buffer accessing circuit is coupled to the buffer for referencing write locations to store the messages received from the transmitter over the communication bus, and for referencing read locations for reading the messages out of the buffer by the receiver. Finally, a delay locked loop circuit is coupled to the communication bus, the buffer accessing circuit and the buffer for providing the proper set-up and hold time requirements for the messages transmitted on the communication bus from the transmitter and storing the messages in the buffer.

    摘要翻译: 一种单向点对点通信装置,用于在两个计算资源之间传送消息,而不管消息的相位,两个计算资源之间的通信路径的长度以及两个计算资源的内部速度。 通信装置具有耦合发射机和接收机的高速通信总线,用于将消息从发射机发射到接收机。 高速通信时钟耦合到总线和接收器,用于定时在发射机和接收机之间的高速通信总线上发送的消息。 在用于存储在发射机和接收机之间传输的消息的接收机之后,大数据缓冲器耦合到高速通信总线。 缓冲器访问电路耦合到缓冲器,用于参考写入位置以存储通过通信总线从发送器接收的消息,并且用于参考由接收器读出缓冲器中的消息的读取位置。 最后,延迟锁定环路电路耦合到通信总线,缓冲器访问电路和缓冲器,用于为在通信总线上从发送器发送的消息提供适当的建立和保持时间要求,并将消息存储在缓冲器中 。

    Slew rate control circuit
    2.
    发明授权
    Slew rate control circuit 有权
    压摆率控制电路

    公开(公告)号:US06744287B2

    公开(公告)日:2004-06-01

    申请号:US10225326

    申请日:2002-08-21

    IPC分类号: H03K1716

    摘要: A bi-directional communication system includes a driver capable of controlling a slew rate of transmitted data signals. Impedance matching can be provided to match an impedance of a driver circuit to an impedance of a communication line. The impedance is maintained constant as data is driven from the data driver. The data receiver circuit can adjust a reference voltage in response to simultaneously transmitted data. The slew rate of the receiver circuit trip point is controlled to maintain adequate noise margin during operation. Both the receiver and driver circuits can be controlled using a delay line circuit.

    摘要翻译: 双向通信系统包括能够控制发送的数据信号的转换速率的驱动器。 可以提供阻抗匹配以将驱动器电路的阻抗与通信线路的阻抗相匹配。 当数据从数据驱动器驱动时,阻抗保持不变。 数据接收器电路可以响应于同时发送的数据来调整参考电压。 控制接收器电路跳变点的转换速率,以在运行期间保持足够的噪声容限。 可以使用延迟线电路来控制接收器和驱动器电路。

    Simultaneous transmission and reception of signals in different frequency bands over a bus line
    4.
    发明授权
    Simultaneous transmission and reception of signals in different frequency bands over a bus line 有权
    在总线上同时发送和接收不同频段的信号

    公开(公告)号:US07177288B2

    公开(公告)日:2007-02-13

    申请号:US09998008

    申请日:2001-11-28

    IPC分类号: H04L5/14

    CPC分类号: H04L5/1423

    摘要: A device includes a bus, a first transmitter connected to the bus and configured to transmit a first signal over the bus in a first frequency band, a second transmitter connected to the bus and configured to transmit a second signal over the bus in a second frequency band at the same time that the first transmitter is transmitting the first signal, a first receiver connected to the bus and configured to receive the first signal transmitted over the bus in the first frequency band, and a second receiver connected to the bus and configured to receive the second signal transmitted over the bus in the second frequency band. The first frequency band and the second frequency band occupy different portions of the frequency spectrum.

    摘要翻译: 一种设备包括总线,连接到总线的第一发射机,并且被配置为在第一频带中通过总线传输第一信号,第二发射器连接到总线并且被配置为以第二频率通过总线发送第二信号 与第一发射机正在发送第一信号的同时,连接到总线并被配置为接收通过总线在第一频带中发送的第一信号的第一接收机和连接到总线的第二接收机,并且被配置为 接收在第二频带中通过总线发送的第二信号。 第一频带和第二频带占据频谱的不同部分。

    Using a timing strobe for synchronization and validation in a digital logic device
    5.
    发明授权
    Using a timing strobe for synchronization and validation in a digital logic device 有权
    在数字逻辑器件中使用定时选通器进行同步和验证

    公开(公告)号:US06437601B1

    公开(公告)日:2002-08-20

    申请号:US09752906

    申请日:2000-12-26

    IPC分类号: H03K19096

    摘要: In an electronic system having first and second logic devices, a free running on-chip clock signal is generated by the first logic device, where the signal has a frequency that is controlled to match that of a global free-running clock signal received by both devices. The on-chip clock signal is synchronized to a strobe signal received by the first device and that was transmitted in association with a data signal by the second device. A logic function is repeatedly performed as synchronized by the first clock signal, to repeatedly generate one or more bits from the data signal.

    摘要翻译: 在具有第一和第二逻辑器件的电子系统中,由第一逻辑器件产生自由运行的片上时钟信号,其中信号的频率被控制以匹配由两者接收的全局自由运行时钟信号的频率 设备。 片上时钟信号与第一器件接收的选通信号同步,并与第二器件与数据信号相关联地发送。 重复执行由第一时钟信号同步的逻辑功能,以从数据信号重复产生一个或多个位。

    Data and strobe repeater having a frequency control unit to re-time the data and reject delay variation in the strobe
    6.
    发明授权
    Data and strobe repeater having a frequency control unit to re-time the data and reject delay variation in the strobe 有权
    具有频率控制单元的数据和选通中继器,用于对数据进行重新计时并拒绝选通脉冲的延迟变化

    公开(公告)号:US06373289B1

    公开(公告)日:2002-04-16

    申请号:US09752895

    申请日:2000-12-26

    IPC分类号: H03K1900

    摘要: A frequency control unit has an input to receive a digital downstream strobe signal and an output to provide a controlled delay to the input strobe signal. A downstream latch has a data input to receive a digital downstream data signal and a clock input coupled to the output of the frequency control unit. The controlled delay is essentially equal to a set up time of the latch. A delay element coupled to the output of the frequency control unit further delays the downstream strobe signal by essentially a propagation time of the latch. Output drivers are coupled to the outputs of the latch and the delay element.

    摘要翻译: 频率控制单元具有用于接收数字下行选通信号和输出的输入,以向输入选通信号提供受控的延迟。 下游锁存器具有用于接收数字下行数据信号的数据输入和耦合到频率控制单元的输出的时钟输入。 受控延迟基本上等于锁存器的设定时间。 耦合到频率控制单元的输出的延迟元件进一步延迟下游选通信号基本上是锁存器的传播时间。 输出驱动器耦合到锁存器和延迟元件的输出。

    On-chip observability buffer to observer bus traffic
    8.
    发明授权
    On-chip observability buffer to observer bus traffic 失效
    观察员总线流量的片上可观察性缓冲区

    公开(公告)号:US07171510B2

    公开(公告)日:2007-01-30

    申请号:US09752880

    申请日:2000-12-28

    CPC分类号: G06F11/221

    摘要: The invention provides, in an embodiment, an apparatus, method and means for unintrusively observing, echoing and reading signals transmitted by one of a bus and wireless communication, without disturbing electrical properties of the bus, without adding bus latency, and without adding signal discontinuities. In an aspect, a buffer having a trigger is coupled with a component that connects to a memory bus, the buffer echoes signals to an observability port, and a diagnostic device reads the echoed signals. In an aspect, the bus is one of a simultaneous bi-directional (SBD) bus having ternary logic levels, a single ended bus, a differential bus, an optically coupled bus, a chipset bus, a frontside bus, an input/output (I/O) bus, a peripheral component interface (PCI) bus, and an industry standard architecture (ISA) bus. In an aspect, the buffer echoes bus signals having frequencies between 500 MHz. and 5 GHz. In an aspect, the buffer echoes bus signals having frequencies of at least 5 GHz.

    摘要翻译: 本发明在一个实施例中提供了一种用于非干涉地观察,回送和读取由总线和无线通信之一发送的信号而不干扰总线的电气特性而不增加总线等待时间并且不增加信号不连续性的装置,方法和装置 。 在一方面,具有触发器的缓冲器与连接到存储器总线的部件耦合,缓冲器将信号回送到可观测端口,并且诊断装置读取回送信号。 一方面,总线是具有三元逻辑电平的同时双向(SBD)总线之一,单端总线,差分总线,光耦合总线,芯片组总线,前端总线,输入/输出( I / O)总线,外设组件接口(PCI)总线和工业标准架构(ISA)总线。 在一个方面,缓冲器回波频率在500MHz之间的总线信号。 和5 GHz。 在一方面,缓冲器响应具有至少5GHz频率的总线信号。

    Transition reduction encoder using current and last bit sets
    9.
    发明授权
    Transition reduction encoder using current and last bit sets 失效
    使用当前位和最后位的转换减速编码器

    公开(公告)号:US06538584B2

    公开(公告)日:2003-03-25

    申请号:US09752883

    申请日:2000-12-28

    IPC分类号: H03M700

    CPC分类号: G11C7/10

    摘要: In some embodiments, the invention involves a circuit including a first set of conductors to carry a current bit set and last bit set circuitry to hold and provide a last bit set. The circuit also includes drivers coupled to interconnect conductors to provide signals from the drivers to the interconnect conductors and an encoder to receive the last bit set and the current bit set and determine whether to provide the current bit set or an encoded version of the current bit set to the drivers.

    摘要翻译: 在一些实施例中,本发明涉及包括第一组导体的电路,以承载当前位组和最后位组电路以保持并提供最后位组。 电路还包括耦合到互连导体的驱动器以提供从驱动器到互连导体的信号,以及用于接收最后位组和当前位组的编码器,并确定是提供当前位组还是当前位的编码版本 设置为司机。

    Rail-to-rail input clocked amplifier
    10.
    发明授权
    Rail-to-rail input clocked amplifier 失效
    轨至轨输入时钟放大器

    公开(公告)号:US06441649B1

    公开(公告)日:2002-08-27

    申请号:US09752647

    申请日:2000-12-29

    IPC分类号: G01R1900

    CPC分类号: H03K3/356191 H03K3/35613

    摘要: The invention provides an apparatus, method and means for capturing data. In an aspect, a differential and complementary input folded-cascode clocked amplifier is provided. In an aspect, the invention provides rail-to-rail input common-mode voltage range. In an aspect, the invention provides a setup/hold time window that is smaller than the setup/hold time window of a conventional clocked amplifier and a conventional input amplifier with a separate amplifier and latch. In an aspect, the invention provides high common-mode rejection as compared with conventional clocked sense amplifiers.

    摘要翻译: 本发明提供了一种用于捕获数据的装置,方法和装置。 在一方面,提供差分和互补输入折叠共源共栅时钟放大器。 在一方面,本发明提供轨至轨输入共模电压范围。 在一方面,本发明提供了一种建立/保持时间窗口,其小于常规时钟放大器和具有单独放大器和锁存器的常规输入放大器的建立/保持时间窗口。 在一方面,与传统的时钟感测放大器相比,本发明提供了高共模抑制。