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1. 发明授权

US08571059B1 Apparatus and methods for serial interfaces with shared datapaths 有权
标题翻译：具有共享数据路径的串行接口的装置和方法
公开(公告)号：US08571059B1
公开(公告)日：2013-10-29
申请号：US13194536
申请日：2011-07-29
申请人： Arch Zaliznyak , Ramanand Venkata , Surinder Singh , Henry Y. Lui , Tim Tri Hoang , Sergey Shumarayev , Thungoc M. Tran
发明人： Arch Zaliznyak , Ramanand Venkata , Surinder Singh , Henry Y. Lui , Tim Tri Hoang , Sergey Shumarayev , Thungoc M. Tran
IPC分类号： H04J3/00
CPC分类号： G06F13/385
摘要： Disclosed are apparatus and methods for providing a serial interface with shared datapaths. The apparatus and methods share or re-use components from multiple lower-speed datapaths so as to efficiently provide a higher-speed datapath. In one embodiment, physical coding sublayer circuitry of the lower-speed datapaths is also used by the higher-speed datapath. In another embodiment, physical media access circuitry of the lower-speed data paths is also used by the higher-speed datapath. Other embodiments, aspects and features are also disclosed.
摘要翻译：公开了用于提供具有共享数据路径的串行接口的装置和方法。该装置和方法共享或重新使用来自多个低速数据路径的组件，以便有效地提供更高速度的数据通路。在一个实施例中，低速数据路径的物理编码子层电路也被较高速数据路径使用。在另一个实施例中，低速数据路径的物理介质访问电路也被高速数据路径使用。还公开了其它实施例，方面和特征。

2. 发明授权

US08290750B1 Signal detect for high-speed serial interface 有权
标题翻译：信号检测用于高速串行接口
公开(公告)号：US08290750B1
公开(公告)日：2012-10-16
申请号：US13036437
申请日：2011-02-28
申请人： Wilson Wong , Allen Chan , Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang , Weiqi Ding
发明人： Wilson Wong , Allen Chan , Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang , Weiqi Ding
IPC分类号： H03F1/26
CPC分类号： H03K5/19 , H03K19/1774 , H03K19/17744 , H03K19/1778
摘要： Signal detection circuitry for a serial interface oversamples the input—i.e., samples the input multiple times per clock cycle—so that the likelihood of missing a signal is reduced. Sampling may be done with a regenerative latch which has a large bandwidth and can latch a signal at high speed. The amplitude threshold for detection may be programmable, particularly in a programmable device. Thus, between the use of a regenerative latch which is likely to catch any signal that might be present, and the use of oversampling to avoid the problem of sampling at the wrong time, the likelihood of failing to detect a signal is greatly diminished. Logic, such as a state machine, may be used to determine whether the samples captured s do or do not represent a signal. That logic may be programmable, allowing a user to set various parameters for signal detection.
摘要翻译：串行接口的信号检测电路对输入进行过采样，即每个时钟周期对输入进行多次采样，从而减少信号丢失的可能性。可以使用具有大带宽的再生锁存器并且可以高速锁存信号来进行采样。用于检测的幅度阈值可以是可编程的，特别是在可编程器件中。因此，在可能捕获可能存在的任何信号的再生锁存器的使用之间以及使用过采样以避免在错误时间采样的问题，大大减少了不能检测信号的可能性。可以使用诸如状态机的逻辑来确定捕获的样本是否或不表示信号。该逻辑可以是可编程的，允许用户设置用于信号检测的各种参数。

3. 发明授权

US07860203B1 High-speed serial data signal interface architectures for programmable logic devices 有权
标题翻译：用于可编程逻辑器件的高速串行数据信号接口架构
公开(公告)号：US07860203B1
公开(公告)日：2010-12-28
申请号：US11725653
申请日：2007-03-19
申请人： Sergey Shumarayev , Wilson Wong , Tim Tri Hoang , Thungoc M. Tran
发明人： Sergey Shumarayev , Wilson Wong , Tim Tri Hoang , Thungoc M. Tran
IPC分类号： H04L7/00
CPC分类号： H03L7/087 , H04J3/0688 , H04L7/033
摘要： A programmable logic device integrated circuit (“PLD”) includes high-speed serial interface (“HSSI”) circuitry in addition to programmable logic circuitry. The HSSI circuitry includes multiple channels of nominal data-handling circuitry (typically including clock and data recovery (“CDR”) circuitry), and at least one channel of nominal clock management unit (“CMU”) circuitry (typically including phase-locked loop (“PLL”) circuitry or the like). To increase the flexibility with which the channels can be used, the nominal data-handling channels are equipped to alternatively perform CMU-type functions, and the nominal CMU channel is equipped to alternatively perform data-handling functions.
摘要翻译：可编程逻辑器件集成电路（“PLD”）除了可编程逻辑电路之外还包括高速串行接口（“HSSI”）电路。 HSSI电路包括多个标称数据处理电路（通常包括时钟和数据恢复（“CDR”）电路）的通道，以及标称时钟管理单元（“CMU”）电路的至少一个通道（通常包括锁相环（“PLL”）电路等）。为了增加可以使用信道的灵活性，标称数据处理信道被配备为交替执行CMU类型功能，并且标称CMU信道被配备为备选地执行数据处理功能。

4. 发明申请

US20090011716A1 SIGNAL LOSS DETECTOR FOR HIGH-SPEED SERIAL INTERFACE OF A PROGRAMMABLE LOGIC DEVICE 有权
标题翻译：用于可编程逻辑器件高速串行接口的信号丢失检测器
公开(公告)号：US20090011716A1
公开(公告)日：2009-01-08
申请号：US11773234
申请日：2007-07-03
申请人： Weiqi Ding , Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
发明人： Weiqi Ding , Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
IPC分类号： H04Q7/20
CPC分类号： H04L25/45
摘要： A loss-of-signal detector includes digital and analog monitoring of incoming data. The incoming signal is compared digitally to at least one predetermined pattern that may indicate a loss of signal, and also is monitored by an analog detector that detects transitions in the data. If the digital comparison fails to match any of the at least one predetermined pattern, or if transitions are detected by the analog monitoring, even if the digital comparison produces a pattern match, then loss of signal is not indicated.
摘要翻译：信号丢失检测器包括对输入数据进行数字和模拟监测。输入信号被数字地比较为可以指示信号丢失的至少一个预定模式，并且还由检测数据中的转换的模拟检测器监视。如果数字比较不能匹配至少一个预定模式中的任何一个，或者如果通过模拟监视检测到转换，即使数字比较产生模式匹配，则不指示信号丢失。

5. 发明授权

US08619931B1 Multi-purpose phase-locked loop for low cost transceiver 有权
标题翻译：用于低成本收发器的多功能锁相环
公开(公告)号：US08619931B1
公开(公告)日：2013-12-31
申请号：US12622152
申请日：2009-11-19
申请人： Tien Duc Pham , Sergey Shumarayev , Tim Tri Hoang , Thungoc M. Tran , Vinh Van Ho , Leon Zheng
发明人： Tien Duc Pham , Sergey Shumarayev , Tim Tri Hoang , Thungoc M. Tran , Vinh Van Ho , Leon Zheng
IPC分类号： H04L7/00
CPC分类号： H04L7/0337 , H04L7/002
摘要： Integrated circuits having transceivers capable of high-speed (e.g., 1 Gbps) operation without dedicated phase-locked loop circuitry are provided. One such integrated circuit device may include one or more transceivers capable of transmitting and receiving serial signals of approximately 1 Gbps or greater, and a multi-purpose phase-locked loop capable of providing a multi-phase clock signal to the one or more transceivers.
摘要翻译：提供了具有能够在没有专用锁相环电路的情况下能够进行高速（例如，1Gbps）操作的收发器的集成电路。一个这样的集成电路设备可以包括能够发送和接收大约1Gbps或更大的串行信号的一个或多个收发器，以及能够向一个或多个收发器提供多相时钟信号的多用途锁相环。

6. 发明授权

US08406258B1 Apparatus and methods for low-jitter transceiver clocking 有权
标题翻译：低抖动收发器时钟的装置和方法
公开(公告)号：US08406258B1
公开(公告)日：2013-03-26
申请号：US12752984
申请日：2010-04-01
申请人： Wilson Wong , Tim Tri Hoang , Thungoc M. Tran , Sergey Shumarayev , Allen Chan
发明人： Wilson Wong , Tim Tri Hoang , Thungoc M. Tran , Sergey Shumarayev , Allen Chan
IPC分类号： H04J3/06
CPC分类号： H03M9/00 , H03K19/1776 , H04J3/047 , H04J3/0685
摘要： One embodiment relates to an integrated circuit which includes multiple communication channels, a clock multiplexer in each channel, two low-jitter clock generator circuits, and clock distribution circuitry. Each channel includes circuitry arranged to communicate a serial data stream using a reference clock signal, and the clock multiplexer in each channel is configured to select the reference clock signal from a plurality of input clock signals. The first low-jitter clock generator circuit is arranged to generate a first clock signal using a first inductor-capacitor-based oscillator circuit, and the second low-jitter clock generator circuit is arranged to generate a second clock signal using a second inductor-capacitor-based oscillator circuit The first and second inductor-capacitor-based oscillator circuits have different tuning ranges. The clock distribution circuitry is arranged to input the first and second low-jitter clock signals to each said clock multiplexer. Other embodiments and features are also disclosed.
摘要翻译：一个实施例涉及一种集成电路，其包括多个通信信道，每个信道中的时钟多路复用器，两个低抖动时钟发生器电路和时钟分配电路。每个通道包括被布置为使用参考时钟信号传送串行数据流的电路，并且每个通道中的时钟复用器被配置为从多个输入时钟信号中选择参考时钟信号。第一低抖动时钟发生器电路被布置为使用第一基于电感器 - 电容器的振荡器电路产生第一时钟信号，并且第二低抖动时钟发生器电路被布置为使用第二电感器电容器产生第二时钟信号基振荡电路基于第一和第二电感电容器的振荡电路具有不同的调谐范围。时钟分配电路被布置为将第一和第二低抖动时钟信号输入到每个所述时钟多路复用器。还公开了其它实施例和特征。

7. 发明申请

US20110235756A1 SIGNAL LOSS DETECTOR FOR HIGH-SPEED SERIAL INTERFACE OF A PROGRAMMABLE LOGIC DEVICE 有权
标题翻译：用于可编程逻辑器件高速串行接口的信号丢失检测器
公开(公告)号：US20110235756A1
公开(公告)日：2011-09-29
申请号：US13151717
申请日：2011-06-02
申请人： Weiqi Ding , Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
发明人： Weiqi Ding , Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
IPC分类号： H04L27/06
CPC分类号： H04L25/45
摘要： A loss-of-signal detector includes digital and analog monitoring of incoming data. The incoming signal is compared digitally to at least one predetermined pattern that may indicate a loss of signal, and also is monitored by an analog detector that detects transitions in the data. If the digital comparison fails to match any of the at least one predetermined pattern, or if transitions are detected by the analog monitoring, even if the digital comparison produces a pattern match, then loss of signal is not indicated.
摘要翻译：信号丢失检测器包括对输入数据进行数字和模拟监测。输入信号被数字地比较为可以指示信号丢失的至少一个预定模式，并且还由检测数据中的转换的模拟检测器监视。如果数字比较不能匹配至少一个预定模式中的任何一个，或者如果通过模拟监视检测到转换，即使数字比较产生模式匹配，则不指示信号丢失。

8. 发明授权

US07903679B1 Power supply filtering for programmable logic device having heterogeneous serial interface architecture 有权
标题翻译：具有异构串行接口架构的可编程逻辑器件的电源滤波
公开(公告)号：US07903679B1
公开(公告)日：2011-03-08
申请号：US11622396
申请日：2007-01-11
申请人： Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
发明人： Sergey Shumarayev , Wilson Wong , Thungoc M. Tran , Tim Tri Hoang
IPC分类号： H04L12/56
CPC分类号： H03K19/17744
摘要： In a programmable logic device with a number of different types of serial interfaces, different power supply filtering schemes are applied to different interfaces. For interfaces operating at the lowest data rates—e.g., 1 Gbps—circuit-board level filtering including one or more decoupling capacitors may be provided. For interfaces operating at somewhat higher data rates—e.g., 3 Gbps—modest on-package filtering also may be provided, which may include power-island decoupling. For interfaces operating at still higher data rates—e.g., 6 Gbps—more substantial on-package filtering, including one or more on-package decoupling capacitors, also may be provided. For interfaces operating at the highest data rates—e.g., 10 Gbps—on-die filtering, which may include one or more on-die filtering or regulating networks, may be provided. The on-die regulators may be programmably bypassable allowing a user to trade off performance for power savings.
摘要翻译：在具有多种不同类型的串行接口的可编程逻辑器件中，不同的电源滤波方案被应用于不同的接口。对于以最低数据速率操作的接口，例如，可以提供包括一个或多个去耦电容器的1Gbps电路板电平滤波器。对于以较高数据速率工作的接口，例如，也可以提供3 Gbps适度的封装内滤波，这可能包括功率岛解耦。对于以更高的数据速率运行的接口，例如，也可以提供包括一个或多个封装内去耦电容器的6Gbps更实质的封装内滤波。对于以最高数据速率工作的接口，例如，可以提供10Gbps片上滤波，其可以包括一个或多个片上滤波或调节网络。片上调节器可以可编程地旁路，允许用户权衡功能以节省功率。

9. 发明授权

US07812634B1 Programmable logic device transceiver architectures that facilitate using various numbers of transceiver channels together 有权
标题翻译：可编程逻辑器件收发器架构，便于将各种数量的收发器通道一起使用
公开(公告)号：US07812634B1
公开(公告)日：2010-10-12
申请号：US11726471
申请日：2007-03-21
申请人： Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang
发明人： Sergey Shumarayev , Thungoc M. Tran , Tim Tri Hoang
IPC分类号： H03K19/173
CPC分类号： H03K19/17736 , H03K19/1774 , H03K19/17744
摘要： Transceiver circuitry on a programmable logic device integrated circuit (“PLD”) is preferably provided in a plurality of identical or at least similar modules. Each module preferably includes a plurality of transceiver channels and a clock source unit. Clock distribution circuitry is provided for distributing the signal of a module's clock source to all of the transceiver channels in that module, and also selectively beyond that module to other modules.
摘要翻译：可编程逻辑器件集成电路（“PLD”）上的收发器电路优选地设置在多个相同或至少相似的模块中。每个模块优选地包括多个收发器通道和时钟源单元。提供时钟分配电路用于将模块的时钟源的信号分配给该模块中的所有收发器通道，并且还选择性地超出该模块到其他模块。

10. 发明授权

US07759972B1 Integrated circuit architectures with heterogeneous high-speed serial interface circuitry 有权
标题翻译：具有异构高速串行接口电路的集成电路架构
公开(公告)号：US07759972B1
公开(公告)日：2010-07-20
申请号：US11981934
申请日：2007-10-31
申请人： Sergey Shumarayev , Wilson Wong , Weiqi Ding , Thungoc M. Tran , Tim Tri Hoang
发明人： Sergey Shumarayev , Wilson Wong , Weiqi Ding , Thungoc M. Tran , Tim Tri Hoang
IPC分类号： H01L25/00
CPC分类号： H03K19/177
摘要： An integrated circuit device such as a programmable logic device (“PLD”) includes a plurality of blocks of legacy circuitry. These legacy blocks leave at least one corner of the device unoccupied by such legacy circuitry. This at least one corner is used for relatively newly developed circuitry so as to simplify and speed the design of relatively new circuitry, to avoid having to significantly redesign any of the legacy circuitry to give the device the capabilities of the new circuitry, etc. The relatively newly developed circuitry may be high-speed serial data signal interface (“HSSI”) circuitry that is capable of operating at serial data rates faster than any legacy HSSI circuitry on the device.
摘要翻译：诸如可编程逻辑器件（“PLD”）的集成电路器件包括多个遗留电路块。这些传统块离开设备的至少一个角落，不被这种遗留电路占用。这个至少一个角用于相对新开发的电路，以便简化和加速相对新的电路的设计，以避免必须重新设计任何传统电路以给予设备新电路的能力等。相对新开发的电路可以是高速串行数据信号接口（“HSSI”）电路，其能够以比设备上的任何传统HSSI电路更快的串行数据速率工作。

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