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1. 发明授权

US08286022B2 Intra-pair differential skew compensation method and apparatus for high-speed cable data transmission systems 有权
标题翻译：用于高速电缆数据传输系统的对内差分偏移补偿方法和装置
公开(公告)号：US08286022B2
公开(公告)日：2012-10-09
申请号：US12352114
申请日：2009-01-12
申请人： Richard Fung , Ramesh Senthinathan , Nancy Chan
发明人： Richard Fung , Ramesh Senthinathan , Nancy Chan
IPC分类号： G06F1/12
CPC分类号： H03K5/151 , G06F1/10 , H04L25/0272 , H04L25/03878
摘要： A differential serial communication receiver circuit automatically compensates for intrapair skew between received differential signals on a serial differential communication link, with deterministic skew adjustment set during a receiver training period. Intrapair skew refers to the skew within a pair of differential signals, and is hence interchangeable with the term differential skew in the context of this document. During the receiver training period, a training data pattern is received, such as alternating ones and zeros (e.g., a D10.2 pattern as is known in the art), rather than an actual data payload. The differential serial communication receiver circuit includes a differential skew compensation circuit to compensate for intrapair skew. The differential skew compensation circuit receives a pair of complementary differential input signals including a noninverting input signal and an inverting input signal, and in response generates a skew compensated first differential output signal and a skew compensated second differential output signal. The differential skew compensation circuit compares the relative delay of the skew compensated first differential output signal and the skew compensated second differential output signal, and in response delays at least one of the noninverting input signal or the inverting input signal to reduce intrapair skew.
摘要翻译：差分串行通信接收器电路自动补偿串行差分通信链路上接收到的差分信号之间的时间间隔偏移，并在接收机训练期间设置确定性偏移调整。内部偏斜是指一对差分信号内的偏斜，因此可以与本文档上下文中的术语差分偏移互换。在接收机训练期间，接收训练数据模式，例如交替的零和零（例如本领域已知的D10.2模式），而不是实际的数据有效载荷。差分串行通信接收器电路包括差分偏移补偿电路，以补偿内部偏移。差分偏移补偿电路接收包括非反相输入信号和反相输入信号的一对互补差分输入信号，并且响应于产生偏斜补偿的第一差分输出信号和偏斜补偿的第二差分输出信号。差分偏移补偿电路比较偏斜补偿的第一差分输出信号和偏斜补偿的第二差分输出信号的相对延迟，并且响应延迟至少一个同相输入信号或反相输入信号，以减少行间偏斜。

2. 发明申请

US20070120583A1 METHOD AND APPARATUS FOR FAST LOCKING OF A CLOCK GENERATING CIRCUIT 有权
标题翻译：用于快速锁定时钟发生电路的方法和装置
公开(公告)号：US20070120583A1
公开(公告)日：2007-05-31
申请号：US11164622
申请日：2005-11-30
申请人： Shirley Lam , Nancy Chan , Mikhail Rodionov , Ramesh Senthinathan
发明人： Shirley Lam , Nancy Chan , Mikhail Rodionov , Ramesh Senthinathan
IPC分类号： H03L7/06
CPC分类号： H03L7/0802 , H03L7/0891 , H03L7/10
摘要： In a method and apparatus for using a clock generating circuit to minimize settling time after dynamic power supply voltage ramping, a clock signal may be generated using a clock generating circuit having, among other things, open feedback loop switch logic and a dynamic fast lock control signal generator. Whereupon, when in operation, the open feedback loop switch logic is responsive to a controlled change in power supply voltage condition such that a feedback loop of the clock generating circuit is opened during power supply voltage ramping (e.g., during transitions to or from battery conservation modes). In response to opening the feedback loop, the dynamic fast lock control signal generator selectively applies a stabilizing control signal to a variable clock signal generator (e.g., a voltage controlled oscillator) such that the generated clock signal can quickly lock onto the proper target frequency.
摘要翻译：在使用时钟发生电路来最小化动态电源电压斜坡上的建立时间的方法和装置中，可以使用具有开放反馈回路开关逻辑和动态快速锁定控制的时钟产生电路来产生时钟信号信号发生器。于是，在运行时，开路反馈环路开关逻辑响应电源电压条件的受控变化，使得时钟发生电路的反馈回路在电源电压斜坡期间打开（例如，在转换到电池保护期间模式）。响应于打开反馈回路，动态快速锁定控制信号发生器选择性地将稳定控制信号施加到可变时钟信号发生器（例如，压控振荡器），使得所产生的时钟信号可以快速锁定到适当的目标频率上。

3. 发明申请

US20060244512A1 APPARATUS AND METHODS FOR BALANCING SUPPLY VOLTAGES 有权
标题翻译：用于平衡电源电压的装置和方法
公开(公告)号：US20060244512A1
公开(公告)日：2006-11-02
申请号：US10908163
申请日：2005-04-29
申请人： Richard Fung , Ramesh Senthinathan
发明人： Richard Fung , Ramesh Senthinathan
IPC分类号： G11C5/14
CPC分类号： G11C5/147 , G09G2330/02
摘要： Methods and apparatus for matching voltages between two or more circuits within an integrated circuit is disclosed. The apparatus includes a comparator circuit, comparing supply voltages to first and second circuits. The comparator outputs a variable error voltage based on the comparison, the error voltage related to the difference in voltages. The error voltage is supplied to a variable current control circuit that variably sinks one of the supply voltages to a common potential in order to increase the IR drop in the circuit supplying voltage to one of the first and second circuits, thereby affording voltage adjustment in order to match the first and second circuits. A corresponding method is also disclosed.
摘要翻译：公开了用于在集成电路内的两个或多个电路之间匹配电压的方法和装置。该装置包括比较器电路，用于将电源电压与第一和第二电路进行比较。比较器根据比较输出可变误差电压，即与电压差有关的误差电压。误差电压被提供给可变电流控制电路，其将电源电压中的一个可变地吸收到公共电位，以便将电路中的IR降低增加到第一和第二电路中的一个，从而按顺序提供电压调整以匹配第一和第二电路。还公开了相应的方法。

4. 发明申请

US20060123177A1 Method and apparatus for transporting and interoperating transition minimized differential signaling over differential serial communication transmitters 审中-公开
标题翻译：用于传输和互操作的方法和装置使差分串行通信发射机的差分信号最小化
公开(公告)号：US20060123177A1
公开(公告)日：2006-06-08
申请号：US11004201
申请日：2004-12-02
申请人： Nancy Chan , Ramesh Senthinathan
发明人： Nancy Chan , Ramesh Senthinathan
IPC分类号： G06F13/42
CPC分类号： H03L7/06 , H04L7/0008 , H04L25/0272 , H04L25/0276
摘要： A differential serial communication transmitter (i.e. PCI Express or other suitable type of transmitter) can be used to transport and interoperate transition minimized differential signaling. The differential serial communication transmitter control logic receives display configuration control data and in response configures at least one differential serial communication transmitter of a plurality of differential serial communication transmitters in an integrated circuit for communication with a display (i.e. visual digital display) employing transition minimized differential signaling. For example, the integrated circuit, such as a graphics processor, may include the plurality of differential serial communication transmitters for communication with devices, such as a northbridge circuit and a display within a computer system. The differential serial communication transmitter control logic may configure at least one of the plurality of differential serial communication transmitters for communication with the display via a differential serial communication display link (i.e. DVI or other suitable type of link). The plurality of differential serial communication transmitters may also be configured for communication with one or more other devices, such as with a bridge circuit such as a northbridge.
摘要翻译：可以使用差分串行通信发射机（即PCI Express或其他合适类型的发射机）来传输和互操作转换最小化的差分信令。差分串行通信发射机控制逻辑接收显示配置控制数据，并且作为响应，在集成电路中配置多个差分串行通信发射机的至少一个差分串行通信发射机，用于与使用转换最小化差分的显示器（即可视数字显示器）进行通信信令。例如，诸如图形处理器的集成电路可以包括用于与设备（例如北桥电路和计算机系统内的显示器）通信的多个差分串行通信发射器。差分串行通信发射机控制逻辑可以配置多个差分串行通信发射机中的至少一个，用于经由差分串行通信显示链路（即，DVI或其他合适类型的链路）与显示器进行通信。多个差分串行通信发射机还可以被配置为与一个或多个其他设备进行通信，例如用诸如北桥的桥接电路进行通信。

5. 发明授权

US08441310B2 Power control based on dual loop with multiple process detection circuits 有权
标题翻译：基于具有多个过程检测电路的双回路的功率控制
公开(公告)号：US08441310B2
公开(公告)日：2013-05-14
申请号：US13010595
申请日：2011-01-20
申请人： Ramesh Senthinathan , Hooman Moshar
发明人： Ramesh Senthinathan , Hooman Moshar
IPC分类号： G06F1/26 , G05F1/46
CPC分类号： G06F1/3296 , G06F1/3243 , Y02D10/152 , Y02D10/172 , Y10T307/858
摘要： According to an example embodiment, an apparatus for controlling a power supply voltage for an integrated circuit may be provided, which may include a plurality of different types of process region detection circuits, each process region detection circuit configured to identify a respective process region of a plurality of process regions. The apparatus may also include a voltage selection circuit configured to determine a highest voltage among the voltages associated with the identified process regions and to select a power supply voltage for the integrated circuit that is equal to the highest voltage, one or more functional test circuits configured to perform a functional test using the selected power supply voltage, and a voltage adjuster circuit configured to increase the selected power supply voltage if the functional test fails.
摘要翻译：根据示例实施例，可以提供用于控制集成电路的电源电压的装置，其可以包括多个不同类型的处理区域检测电路，每个处理区域检测电路被配置为识别一个多个处理区域。该装置还可以包括电压选择电路，其被配置为确定与所识别的处理区域相关联的电压中的最高电压，并且选择等于最高电压的集成电路的电源电压，配置的一个或多个功能测试电路使用所选择的电源电压来执行功能测试;以及电压调节器电路，其被配置为如果功能测试失败则增加所选择的电源电压。

6. 发明申请

US20110060847A1 METHOD AND APPARATUS FOR TRANSPORTING AND INTEROPERATING TRANSITION MINIMIZED DIFFERENTIAL SIGNALING OVER DIFFERENTIAL SERIAL COMMUNICATION TRANSMITTERS 审中-公开
公开(公告)号：US20110060847A1
公开(公告)日：2011-03-10
申请号：US12944501
申请日：2010-11-11
申请人： Nancy Chan , Ramesh Senthinathan
发明人： Nancy Chan , Ramesh Senthinathan
IPC分类号： G06F3/00 , G06F13/42
CPC分类号： H03L7/06 , H04L7/0008 , H04L25/0272 , H04L25/0276
摘要： A differential serial communication transmitter (i.e. PCI Express or other suitable type of transmitter) can be used to transport and interoperate transition minimized differential signaling. The differential serial communication transmitter control logic receives display configuration control data and in response configures at least one differential serial communication transmitter of a plurality of differential serial communication transmitters in an integrated circuit for communication with a display (i.e. visual digital display) employing transition minimized differential signaling. For example, the integrated circuit, such as a graphics processor, may include the plurality of differential serial communication transmitters for communication with devices, such as a northbridge circuit and a display within a computer system. The differential serial communication transmitter control logic may configure at least one of the plurality of differential serial communication transmitters for communication with the display via a differential serial communication display link (i.e. DVI or other suitable type of link). The plurality of differential serial communication transmitters may also be configured for communication with one or more other devices, such as with a bridge circuit such as a northbridge.

7. 发明申请

US20090121761A1 INTRA-PAIR DIFFERENTIAL SKEW COMPENSATION METHOD AND APPARATUS FOR HIGH-SPEED CABLE DATA TRANSMISSION SYSTEMS 有权
标题翻译：高速电缆数据传输系统的内部差分补偿方法和装置
公开(公告)号：US20090121761A1
公开(公告)日：2009-05-14
申请号：US12352114
申请日：2009-01-12
申请人： Richard Fung , Ramesh Senthinathan , Nancy Chan
发明人： Richard Fung , Ramesh Senthinathan , Nancy Chan
IPC分类号： H03L7/00
CPC分类号： H03K5/151 , G06F1/10 , H04L25/0272 , H04L25/03878
摘要： A differential serial communication receiver circuit automatically compensates for intrapair skew between received differential signals on a serial differential communication link, with deterministic skew adjustment set during a receiver training period. Intrapair skew refers to the skew within a pair of differential signals, and is hence interchangeable with the term differential skew in the context of this document. During the receiver training period, a training data pattern is received, such as alternating ones and zeros (e.g., a D10.2 pattern as is known in the art), rather than an actual data payload. The differential serial communication receiver circuit includes a differential skew compensation circuit to compensate for intrapair skew. The differential skew compensation circuit receives a pair of complementary differential input signals including a noninverting input signal and an inverting input signal, and in response generates a skew compensated first differential output signal and a skew compensated second differential output signal. The differential skew compensation circuit compares the relative delay of the skew compensated first differential output signal and the skew compensated second differential output signal, and in response delays at least one of the noninverting input signal or the inverting input signal to reduce intrapair skew.
摘要翻译：差分串行通信接收器电路自动补偿串行差分通信链路上接收到的差分信号之间的时间间隔偏移，并在接收机训练期间设置确定性偏移调整。内部偏斜是指一对差分信号内的偏斜，因此可以与本文档上下文中的术语差分偏移互换。在接收机训练期间，接收训练数据模式，例如交替的零和零（例如本领域已知的D10.2模式），而不是实际的数据有效载荷。差分串行通信接收器电路包括差分偏移补偿电路，以补偿内部偏移。差分偏移补偿电路接收包括非反相输入信号和反相输入信号的一对互补差分输入信号，并且响应于产生偏斜补偿的第一差分输出信号和偏斜补偿的第二差分输出信号。差分偏移补偿电路比较偏斜补偿的第一差分输出信号和偏斜补偿的第二差分输出信号的相对延迟，并且响应延迟至少一个同相输入信号或反相输入信号，以减少行间偏斜。

8. 发明申请

US20090115457A1 Apparatus and Methods for Self-Biasing Differential Signaling Circuitry Having Multimode Output Configurations for Low Voltage Applications 有权
标题翻译：具有用于低电压应用的多模输出配置的自偏压差分信号电路的装置和方法
公开(公告)号：US20090115457A1
公开(公告)日：2009-05-07
申请号：US12352916
申请日：2009-01-13
申请人： Junho Cho , Nancy Chan , Ramesh Senthinathan , Stephen Yue , Richard W. Fung
发明人： Junho Cho , Nancy Chan , Ramesh Senthinathan , Stephen Yue , Richard W. Fung
IPC分类号： H03K19/20
CPC分类号： H03K17/302 , H03K17/04106
摘要： The present disclosure relates to a differential signaling circuit including differential signaling circuitry having at least one output and one input, that can operate in multiple mode of operations while using a single, low voltage supply source. Two or more switches are included and configured to selectively couple a supply voltage to the output dependent on a mode of operation of the differential signaling circuitry. The circuit also includes a switch control biasing circuit operatively coupled to at least one of the switches and to the output of the differential signaling circuitry. The switch control biasing circuit provides a switch control biasing voltage to control a state of the switch based on a voltage level of the output. Further, a bulk biasing circuit is included and operatively coupled to the switch. The bulk biasing circuit selectively provides a bulk biasing voltage to the switch based on the voltage level of the output.
摘要翻译：本公开涉及一种差分信号电路，其包括具有至少一个输出和一个输入的差分信号电路，其可以在使用单个低电压电源时在多种操作模式下操作。两个或更多个开关被包括并且被配置为根据差分信号电路的操作模式来选择性地将电源电压耦合到输出。电路还包括可操作地耦合到至少一个开关和差分信号电路的输出的开关控制偏置电路。开关控制偏置电路提供开关控制偏置电压，以基于输出的电压电平来控制开关的状态。此外，体积偏置电路被包括并且可操作地耦合到开关。体积偏置电路基于输出的电压电平选择性地向开关提供体积偏置电压。

9. 发明申请

US20070045825A1 Dynamic voltage and power management by temperature monitoring 有权
标题翻译：通过温度监控动态电压和电源管理
公开(公告)号：US20070045825A1
公开(公告)日：2007-03-01
申请号：US11215918
申请日：2005-08-31
申请人： Nancy Chan , Ramesh Senthinathan
发明人： Nancy Chan , Ramesh Senthinathan
IPC分类号： H01L23/34
CPC分类号： H01L23/34 , G06F1/26 , G06F11/3024 , G06F11/3051 , G06F11/3058 , H01L2924/0002 , H01L2924/00
摘要： A supply voltage management system and method for an integrated circuit (IC) die are provided. The supply voltage management system includes one or more temperature sensing elements located on the IC die and configured to sense temperature of the die and to output a sensed temperature value for the die. A dynamic voltage controller is located on the die and is configured to receive the sensed temperature value for the die and to identify a technology process category of the die. Based on the sensed temperature value and the identified technology process category of the die, the dynamic voltage controller adjusts an output voltage to at least one circuit of the die.
摘要翻译：提供了一种用于集成电路（IC）管芯的电源电压管理系统和方法。电源电压管理系统包括位于IC管芯上的一个或多个温度检测元件，其配置为感测管芯的温度并输出检测到的管芯温度值。动态电压控制器位于管芯上并且被配置为接收针对管芯的感测温度值并且识别管芯的技术工艺类别。基于感测的温度值和所识别的管芯工艺过程类别，动态电压控制器调节至少一个管芯电路的输出电压。

10. 发明申请

US20060247873A1 APPARATUS AND METHODS FOR MEASUREMENT OF ANALOG VOLTAGES IN AN INTEGRATED CIRCUIT 有权
标题翻译：在集成电路中测量模拟电压的装置和方法
公开(公告)号：US20060247873A1
公开(公告)日：2006-11-02
申请号：US10908197
申请日：2005-05-02
申请人： Richard Fung , Ramesh Senthinathan , Ronny Chan
发明人： Richard Fung , Ramesh Senthinathan , Ronny Chan
IPC分类号： G01R19/00
CPC分类号： H03M1/1225 , G01R19/257 , H03M1/56
摘要： The present disclosure relates to apparatus and methods for measurement of analog voltages in an integrated circuit. In particular, the apparatus includes an on-chip digital-to-analog converter configured to receive a variable digital input code and output a corresponding analog voltage corresponding to the variable digital input code. The apparatus also includes an on-chip comparator circuit configured to receive the analog voltage output by the digital-to-analog converter and a test analog voltage as inputs and to provide an output indicating the test analog voltage. Further, the apparatus includes an on-chip logic operative to determine the test analog voltage based on the output of the comparator circuit. A corresponding method is also disclosed.
摘要翻译：本公开涉及用于在集成电路中测量模拟电压的装置和方法。具体地，该装置包括片上数模转换器，其被配置为接收可变数字输入码并输出对应于可变数字输入码的相应模拟电压。该装置还包括片上比较器电路，其被配置为接收由数模转换器输出的模拟电压和测试模拟电压作为输入，并提供指示测试模拟电压的输出。此外，该装置包括用于基于比较器电路的输出来确定测试模拟电压的片上逻辑。还公开了相应的方法。

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