公开(公告)号：US20110257953A1

公开(公告)日：2011-10-20

申请号：US12762848

申请日：2010-04-19

Applicant: Peng Li ,  Masashi Shimanouchi ,  Thungoc M. Tran ,  Sergey Shumarayev

Inventor： Peng Li ,  Masashi Shimanouchi ,  Thungoc M. Tran ,  Sergey Shumarayev

IPC: G06F17/50

CPC classification number: G06F17/5009 ,  G06F17/5036 ,  G06F2217/10

Abstract: A link simulation tool for simulating high-speed communications link systems is provided. Communications links may include link subsystems such as transmit (TX) circuitry, receive (TX) circuitry, oscillator circuits that provide reference clock signals to the TX and RX circuitry, and channels that link the TX and RX circuitry. The link simulation tool may model each of the subsystems using behavioral models. The behavioral models may include characteristic functions such as transfer functions, probability density functions, and eye characteristics. The link simulation tool may have a link analysis engine that is capable of performing two-dimensional (two-variable) convolution operations and in applying dual-domain (frequency-time) transformations on the characteristic functions provided by the behavioral models to simulate the performance of the link system. The link simulation tool may have an input screen that allows a user to specify desired link parameters and a data display screen that display simulated results.

Abstract translation: 提供了一种用于模拟高速通信链路系统的链路仿真工具。 通信链路可以包括链路子系统，例如发射（TX）电路，接收（TX）电路，向TX和RX电路提供参考时钟信号的振荡器电路，以及链接TX和RX电路的信道。 链接仿真工具可以使用行为模型对每个子系统进行建模。 行为模型可以包括特征功能，例如传递函数，概率密度函数和眼睛特征。 链路仿真工具可以具有能够执行二维（双变量）卷积运算并且对由行为模型提供的特征函数应用双域（频率 - 时间）变换以模拟性能的链路分析引擎 的链接系统。 链接仿真工具可以具有允许用户指定期望的链接参数的输入屏幕和显示模拟结果的数据显示屏幕。

公开(公告)号：US20110235756A1

公开(公告)日：2011-09-29

申请号：US13151717

申请日：2011-06-02

Applicant: Weiqi Ding ,  Sergey Shumarayev ,  Wilson Wong ,  Thungoc M. Tran ,  Tim Tri Hoang

Inventor： Weiqi Ding ,  Sergey Shumarayev ,  Wilson Wong ,  Thungoc M. Tran ,  Tim Tri Hoang

IPC: H04L27/06

CPC classification number: H04L25/45

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110188621A1

公开(公告)日：2011-08-04

申请号：US12700433

申请日：2010-02-04

Applicant: Kazi Asaduzzaman ,  Tim Tri Hoang ,  Tin H. Lai ,  Shou-Po Shih ,  Sergey Shumarayev

Inventor： Kazi Asaduzzaman ,  Tim Tri Hoang ,  Tin H. Lai ,  Shou-Po Shih ,  Sergey Shumarayev

IPC: H04L7/00

CPC classification number: H03L7/08 ,  H03L7/0807 ,  H03L7/0814 ,  H03L7/087 ,  H03L7/0898 ,  H03L7/099 ,  H03L7/183 ,  H04L7/0337

Abstract: An integrated circuit (“IC”) may include clock and data recovery (“CDR”) circuitry for recovering data information from an input serial data signal. The CDR circuitry may include a reference clock loop and a data loop. A retimed (recovered) data signal output by the CDR circuitry is monitored by other control circuitry on the IC for a communication change request contained in that signal. Responsive to such a request, the control circuitry can change an operating parameter of the CDR circuitry (e.g., a frequency division factor used in either of the above-mentioned loops). This can help the IC support communication protocols that employ auto-speed negotiation.

Abstract translation: 集成电路（“IC”）可以包括用于从输入串行数据信号恢复数据信息的时钟和数据恢复（“CDR”）电路。 CDR电路可以包括参考时钟环路和数据环路。 由CDR电路输出的重新定时（恢复）数据信号由IC上的其它控制电路监视用于包含在该信号中的通信改变请求。 响应于这种请求，控制电路可以改变CDR电路的操作参数（例如，在上述任何一个循环中使用的分频因子）。 这可以帮助IC支持采用自动速度协商的通信协议。

公开(公告)号：US07940814B2

公开(公告)日：2011-05-10

申请号：US12576507

申请日：2009-10-09

Applicant: Sergey Shumarayev ,  Bill W. Bereza ,  Chong H. Lee ,  Rakesh H. Patel ,  Wilson Wong

Inventor： Sergey Shumarayev ,  Bill W. Bereza ,  Chong H. Lee ,  Rakesh H. Patel ,  Wilson Wong

IPC: H04J3/04

CPC classification number: H04L5/14 ,  H03K19/17744 ,  H04L27/00

Abstract: High-speed serial data transceiver circuitry on a programmable logic device (“PLD”) includes some channels that are able to operate at data rates up to a first, relatively low maximum data rate, and other channels that are able to operate at data rates up to a second, relatively high maximum data rate. The relatively low-speed channels are served by relatively low-speed phase locked loop (“PLL”) circuitry, and have other circuit components that are typically needed for handling data that is transmitted at relatively low data rates. The relatively high-speed channels are served by relatively high-speed PLLs, and have other circuit components that are typically needed for handling data that is transmitted at relatively high data rates.

Abstract translation: 可编程逻辑器件（“PLD”）上的高速串行数据收发器电路包括一些能够以高达第一，相对较低的最大数据速率的数据速率工作的通道，以及能够以数据速率操作的其他通道 达到第二个相对较高的最大数据速率。 相对低速的通道由相对低速的锁相环（“PLL”）电路服务，并且具有通常用于处理以相对低的数据速率发送的数据所需的其他电路组件。 相对高速的信道由相对高速的PLL服务，并且具有通常用于处理以相对高的数据速率传输的数据所需的其他电路部件。

公开(公告)号：US07903679B1

公开(公告)日：2011-03-08

申请号：US11622396

申请日：2007-01-11

Applicant: Sergey Shumarayev ,  Wilson Wong ,  Thungoc M. Tran ,  Tim Tri Hoang

Inventor： Sergey Shumarayev ,  Wilson Wong ,  Thungoc M. Tran ,  Tim Tri Hoang

IPC: H04L12/56

CPC classification number: H03K19/17744

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07834712B2

公开(公告)日：2010-11-16

申请号：US12277810

申请日：2008-11-25

Applicant: Sergey Shumarayev ,  Wilson Wong ,  Allen Chan ,  Ali Atesoglu

Inventor： Sergey Shumarayev ,  Wilson Wong ,  Allen Chan ,  Ali Atesoglu

IPC: H03B5/00

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2201/011

Abstract: An oscillator circuit includes transistors that are cross-coupled through routing conductors in a first conductive layer. The oscillator circuit also includes a varactor, a capacitor, and an option conductor in a second conductive layer. The option conductor forms at least a portion of a connection between one of the transistors and the capacitor or the varactor.

Abstract translation: 振荡器电路包括通过第一导电层中的路由导体交叉耦合的晶体管。 振荡器电路还包括第二导电层中的变容二极管，电容器和选项导体。 选项导体形成晶体管之一和电容器或变容二极管之间的连接的至少一部分。

公开(公告)号：US07812659B1

公开(公告)日：2010-10-12

申请号：US11432420

申请日：2006-05-10

Applicant: Sergey Shumarayev ,  Rakesh H Patel ,  William W Bereza ,  Tim Tri Hoang ,  Thungoc Tran

Inventor： Sergey Shumarayev ,  Rakesh H Patel ,  William W Bereza ,  Tim Tri Hoang ,  Thungoc Tran

IPC: G06F1/04 ,  H04L7/00

CPC classification number: H03L7/22 ,  G06F1/06

Abstract: A programmable logic device (“PLD”) or the like has a plurality of data transmitter channels. Certain circuitry is shared by the channels. The shared circuitry includes at least one phase-locked loop (“PLL”) circuit for producing a primary clock signal, and global frequency divider circuitry for producing at least one global secondary clock signal based on the primary signal. The primary and global secondary signal(s) are distributed to the channels. Each of the channels includes local frequency divider circuitry for producing at least one local secondary clock signal based on the primary signal. Each channel also includes selection circuitry for selecting either the global or local secondary signal(s) for use by clock utilization circuitry of the channel. The clock utilization circuitry may include serializer circuitry for converting data from parallel to serial form.

Abstract translation: 可编程逻辑器件（“PLD”）等具有多个数据发送器通道。 某些电路由通道共享。 共享电路包括用于产生主时钟信号的至少一个锁相环（“PLL”）电路和用于基于主信号产生至少一个全局辅助时钟信号的全局分频器电路。 主要和全局辅助信号被分配到信道。 每个通道包括本地分频器电路，用于基于主信号产生至少一个本地辅助时钟信号。 每个通道还包括选择电路，用于选择由信道的时钟利用电路使用的全局或局部辅助信号。 时钟利用电路可以包括用于将数据从并行转换为串行形式的串行化器电路。

公开(公告)号：US07812634B1

公开(公告)日：2010-10-12

申请号：US11726471

申请日：2007-03-21

Applicant: Sergey Shumarayev ,  Thungoc M. Tran ,  Tim Tri Hoang

Inventor： Sergey Shumarayev ,  Thungoc M. Tran ,  Tim Tri Hoang

IPC: H03K19/173

CPC classification number: H03K19/17736 ,  H03K19/1774 ,  H03K19/17744

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07759972B1

公开(公告)日：2010-07-20

申请号：US11981934

申请日：2007-10-31

Applicant: Sergey Shumarayev ,  Wilson Wong ,  Weiqi Ding ,  Thungoc M. Tran ,  Tim Tri Hoang

Inventor： Sergey Shumarayev ,  Wilson Wong ,  Weiqi Ding ,  Thungoc M. Tran ,  Tim Tri Hoang

IPC: H01L25/00

CPC classification number: H03K19/177

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07693691B1

公开(公告)日：2010-04-06

申请号：US11524012

申请日：2006-09-19

Applicant: Yuming Tao ,  William W. Bereza ,  Rakesh H. Patel ,  Tad Kwasniewski ,  Sergey Shumarayev ,  Shoujun Wang ,  Miao Li

Inventor： Yuming Tao ,  William W. Bereza ,  Rakesh H. Patel ,  Tad Kwasniewski ,  Sergey Shumarayev ,  Shoujun Wang ,  Miao Li

IPC: G06F17/50 ,  H04B1/04

CPC classification number: G06F17/5009

Abstract: Systems and methods for accurately and quickly simulating link performance of a transceiver operating with any given transmission medium are provided. Accurate and quick link simulations may be provided using a link simulation platform. The link simulation platform may simulate link performance using transceiver behavioral models (e.g., transmitter and receiver behavioral models) that incorporate silicon level parameters, which parameters enable the behavioral models to substantially emulate the actual behavior of the transceiver portions of the link.

Abstract translation: 提供了用于准确和快速地模拟使用任何给定传输介质工作的收发器的链路性能的系统和方法。 可以使用链路仿真平台提供准确和快速的链路模拟。 链路仿真平台可以使用包含硅级参数的收发机行为模型（例如，发射机和接收机行为模型）来模拟链路性能，这些参数使得行为模型能够基本上模拟链路的收发器部分的实际行为。