公开(公告)号：US20120126879A1

公开(公告)日：2012-05-24

申请号：US12926531

申请日：2010-11-23

申请人： Bal S. Sandhu ,  Satchin Satish Idgunji ,  David Walter Flynn

发明人： Bal S. Sandhu ,  Satchin Satish Idgunji ,  David Walter Flynn

IPC分类号： H03K17/687

CPC分类号： H03K19/0008 ,  H03K17/145 ,  H03K19/00369 ,  H03K2017/066

摘要： A technique for controlling power gating in an integrated circuit is provided. The integrated circuit comprises a block of components to be power gated, and power gating circuitry for selectively isolating the block of components from the source voltage supply in order to achieve such power gating. Voltage regulator circuitry is used to provide a control voltage to the power gating circuitry when performing such power gating operations, the control voltage being settable to any of a plurality of predetermined voltage levels. An adaptive controller receives operating parameter data from either or both of the block of components and the power gating circuitry, that operating parameter data being indicative of leakage current. The adaptive controller then issues a feedback control signal to the voltage regulator circuitry whose value is dependent on the received operating parameter data. The voltage regulator circuitry is then responsive to the feedback control signal to change the control voltage between the plurality of predetermined voltage levels, until the operating parameter data indicates that a desired leakage current has been obtained within the power gating circuitry. Such an approach enables a balance to be achieved between reducing leakage current and reducing wear out of the power gating circuitry.

摘要翻译： 提供了一种用于控制集成电路中的电源门控的技术。 集成电路包括要被电源门控的组件块和用于选择性地将组件块与源电压供应隔离的电源门控电路，以便实现这种电源门控。 电压调节器电路用于在执行这种电源门控操作时向电源门控电路提供控制电压，该控制电压可设置为多个预定电压电平中的任何一个。 自适应控制器从组件块和功率选通电路中的一个或两个接收操作参数数据，该操作参数数据表示泄漏电流。 然后，自适应控制器向电压调节器电路发出反馈控制信号，该电压调节器电路的值取决于所接收的操作参数数据。 电压调节器电路然后响应于反馈控制信号来改变多个预定电压电平之间的控制电压，直到操作参数数据指示在电力门控电路内已经获得期望的泄漏电流。 这种方法使得能够在降低漏电流和减少电源门控电路之间的磨损的情况下实现平衡。

公开(公告)号：US08395440B2

公开(公告)日：2013-03-12

申请号：US12926531

申请日：2010-11-23

申请人： Bal S. Sandhu ,  Satchin Satish Idgunji ,  David Walter Flynn

发明人： Bal S. Sandhu ,  Satchin Satish Idgunji ,  David Walter Flynn

IPC分类号： G05F1/10

CPC分类号： H03K19/0008 ,  H03K17/145 ,  H03K19/00369 ,  H03K2017/066

摘要： An integrated circuit comprises a block of components to be power gated and power gating circuitry for selectively isolating the components from the source voltage supply to achieve such power gating. A voltage regulator provides a control voltage to the power gating circuitry when performing power gating operations. The control voltage may be set to any of a plurality of predetermined voltage levels. An adaptive controller receives operating parameter data from either or both of the block of components and the power gating circuitry, that operating parameter data being indicative of leakage current. The adaptive controller issues a feedback signal to the voltage regulator whose value depends on the received operating parameter data. The voltage regulator responds to the feedback signal to change the control voltage between the predetermined voltage levels until the operating parameter data indicates that a desired leakage current is obtained within the power gating circuitry.

摘要翻译： 集成电路包括要被电源门控的组件块和用于选择性地将组件与源电压源隔离以实现这种电源门控的电源门控电路。 当执行电源门控操作时，电压调节器为电源门控电路提供控制电压。 控制电压可以被设置为多个预定电压电平中的任何一个。 自适应控制器从组件块和功率选通电路中的一个或两个接收操作参数数据，该操作参数数据表示泄漏电流。 自适应控制器向电压调节器发出反馈信号，该值取决于接收到的操作参数数据。 电压调节器响应于反馈信号以改变在预定电压电平之间的控制电压，直到操作参数数据指示在功率选通电路内获得期望的泄漏电流。

公开(公告)号：US08665009B2

公开(公告)日：2014-03-04

申请号：US13562516

申请日：2012-07-31

申请人： James Edward Myers ,  Parameshwarappa Anand Kumar Savanth ,  David Walter Flynn ,  David William Howard ,  Bal S Sandhu

发明人： James Edward Myers ,  Parameshwarappa Anand Kumar Savanth ,  David Walter Flynn ,  David William Howard ,  Bal S Sandhu

IPC分类号： H01J19/82 ,  G11C5/14

CPC分类号： H02M3/07

摘要： An integrated circuit and method are provided for controlling variation in the voltage output from on-chip voltage generation circuitry. The integrated circuit comprises voltage generation circuitry configured to operate from a supplied input voltage and to generate at an output node an on-chip voltage supply different to the supplied input voltage. A circuit block is then arranged to receive the on-chip voltage supply generated by the voltage generation circuitry, during operation of the circuit block the circuit block presenting a varying load on the output node. Oscillation circuitry is also coupled to the output node to provide an additional load on the output node, and is configured to produce an oscillation signal whose frequency varies as the value of the on-chip voltage supply varies. Control circuitry is configured to be responsive to a trigger condition to adjust the additional load provided on the output node by the oscillation circuitry. This provides a particularly simple and effective mechanism for providing an additional load on the output node which can be altered with the aim of offsetting variation in the load on the output node presented by the circuit block, thus allowing the variation in the voltage output from the on-chip voltage generation circuitry to be controlled.

摘要翻译： 提供一种用于控制片上电压产生电路的电压输出变化的集成电路和方法。 集成电路包括电压产生电路，其被配置为从提供的输入电压进行操作，并且在输出节点处产生不同于所提供的输入电压的片上电压。 然后，电路块被布置成在电路块的操作期间接收由电压产生电路产生的片上电压源，该电路块在输出节点上呈现变化的负载。 振荡电路还耦合到输出节点以在输出节点上提供额外的负载，并且被配置为产生其频率随着片上电压供应的值变化而变化的振荡信号。 控制电路被配置为响应于触发条件来调节由振荡电路在输出节点上提供的附加负载。 这提供了一种特别简单和有效的机制，用于在输出节点上提供额外的负载，其可以被改变，目的是抵消由电路块呈现的输出节点上的负载的变化，从而允许来自 片上电压产生电路要被控制。

公开(公告)号：US08615687B2

公开(公告)日：2013-12-24

申请号：US12929237

申请日：2011-01-10

申请人： Bal S Sandhu ,  Sachin Satish Idgunji ,  David Walter Flynn

发明人： Bal S Sandhu ,  Sachin Satish Idgunji ,  David Walter Flynn

IPC分类号： G06F11/00 ,  G01R31/28

CPC分类号： G06F1/3296 ,  G06F1/324 ,  Y02D10/126 ,  Y02D10/172

摘要： A data processing system and method for regulating a voltage supply to functional circuitry configured to operate from a variable voltage supply, the functional circuitry having at least one error correction circuit configured to detect and repair errors in operation of the functional circuitry. Voltage regulator circuitry provides the voltage supply to the functional circuitry, and modifies the voltage level of the voltage supply based on a feedback control signal. Error rate history circuitry receives error indications from the error correction circuit during operation of the functional circuitry and generates error rate history information therefrom. An adaptive controller then generates the feedback control signal in dependence on the error rate history information such that the adaptive controller adjusts the feedback control signal over time having regard to the error rate history information in order to obtain a predetermined target non-zero error rate within the functional circuitry.

摘要翻译： 一种数据处理系统和方法，用于调节被配置为从可变电压源操作的功能电路的电压供应，所述功能电路具有被配置为检测和修复功能电路操作中的错误的至少一个误差校正电路。 电压调节器电路为功能电路提供电压，并且基于反馈控制信号修改电压源的电压电平。 误差率历史电路在功能电路的操作期间从错误校正电路接收错误指示，并从中产生错误率历史信息。 然后，自适应控制器根据错误率历史信息产生反馈控制信号，使得自适应控制器在考虑到错误率历史信息后随时间调整反馈控制信号，以便在内部获得预定的目标非零错误率 功能电路。

公开(公告)号：US20130202008A1

公开(公告)日：2013-08-08

申请号：US13368383

申请日：2012-02-08

申请人： James Edward MYERS ,  David Walter Flynn ,  Bal S. Sandhu

发明人： James Edward MYERS ,  David Walter Flynn ,  Bal S. Sandhu

IPC分类号： G01K13/00 ,  G01K15/00

CPC分类号： G01K7/346

摘要： A monitoring circuit for an integrated circuit comprises a non-temperature-inverted circuit and a temperature-inverted circuit. Operating parameters of the two circuits are measured, representing the propagation speed of signals in the respective circuits. In response to a change in temperature, the non-temperature-inverted circuit slows down and the temperature-inverted circuit speeds up. In contrast, in response to a change in operating voltage both circuits either speed up or slow down. This divergence in response to temperature and similar response to voltage enables the monitoring circuit to distinguish between changes in operating voltage and changes in operating temperature.

摘要翻译： 集成电路的监视电路包括非温度反相电路和温度反相电路。 测量两个电路的工作参数，表示各个电路中信号的传播速度。 响应于温度变化，非温度反相电路减慢，温度反转电路加速。 相比之下，响应于工作电压的变化，两个电路都加速或减慢。 响应于温度的这种分歧和对电压的类似响应使得监测电路能够区分工作电压的变化和工作温度的变化。

公开(公告)号：US20120023382A1

公开(公告)日：2012-01-26

申请号：US12929237

申请日：2011-01-10

申请人： Bal S. Sandhu ,  Sachin Satish Idgunji ,  David Walter Flynn

发明人： Bal S. Sandhu ,  Sachin Satish Idgunji ,  David Walter Flynn

IPC分类号： G06F11/26

CPC分类号： G06F1/3296 ,  G06F1/324 ,  Y02D10/126 ,  Y02D10/172

摘要： A data processing system and method for regulating a voltage supply to functional circuitry of the data processing system is provided. The functional circuitry is configured to operate from a voltage supply whose voltage level is variable, the functional circuitry having at least one error correction circuit configured to detect errors in operation of the functional circuitry and to repair those errors in operation. Voltage regulator circuitry provides the voltage supply to the functional circuitry, and modifies the voltage level of the voltage supply based on a feedback control signal. Error rate history circuitry receives error indications from the error correction circuit during operation of the functional circuitry and generates error rate history information therefrom. An adaptive controller then generates the feedback control signal in dependence on the error rate history information such that the adaptive controller adjusts the feedback control signal over time having regard to the error rate history information in order to obtain a predetermined target non-zero error rate within the functional circuitry. Such an approach enables a significant reduction in power consumption of the data processing system to be achieved.

摘要翻译： 提供了一种用于调节对数据处理系统的功能电路的电压供应的数据处理系统和方法。 功能电路被配置为从其电压电平可变的电压源操作，功能电路具有至少一个错误校正电路，其被配置为检测功能电路的操作中的错误并修复这些操作中的错误。 电压调节器电路为功能电路提供电压，并且基于反馈控制信号修改电压源的电压电平。 误差率历史电路在功能电路的操作期间从错误校正电路接收错误指示，并从中产生错误率历史信息。 然后，自适应控制器根据错误率历史信息产生反馈控制信号，使得自适应控制器在考虑到错误率历史信息后随时间调整反馈控制信号，以便在内部获得预定的目标非零错误率 功能电路。 这种方法能够显着降低要实现的数据处理系统的功耗。

公开(公告)号：US08868962B2

公开(公告)日：2014-10-21

申请号：US13368383

申请日：2012-02-08

申请人： James Edward Myers ,  David Walter Flynn ,  Bal S Sandhu

发明人： James Edward Myers ,  David Walter Flynn ,  Bal S Sandhu

IPC分类号： G06F1/04 ,  G01K7/00

CPC分类号： G01K7/346

摘要： A monitoring circuit for an integrated circuit comprises a non-temperature-inverted circuit and a temperature-inverted circuit. Operating parameters of the two circuits are measured, representing the propagation speed of signals in the respective circuits. In response to a change in temperature, the non-temperature-inverted circuit slows down and the temperature-inverted circuit speeds up. In contrast, in response to a change in operating voltage both circuits either speed up or slow down. This divergence in response to temperature and similar response to voltage enables the monitoring circuit to distinguish between changes in operating voltage and changes in operating temperature.

摘要翻译： 集成电路的监视电路包括非温度反相电路和温度反相电路。 测量两个电路的工作参数，表示各个电路中信号的传播速度。 响应于温度变化，非温度反相电路减慢，温度反转电路加速。 相比之下，响应于工作电压的变化，两个电路都加速或减慢。 响应于温度的这种分歧和对电压的类似响应使得监测电路能够区分工作电压的变化和工作温度的变化。

公开(公告)号：US20120286850A1

公开(公告)日：2012-11-15

申请号：US13067183

申请日：2011-05-13

申请人： James Edward Myers ,  John Philip Biggs ,  David Walter Flynn ,  Carsten Tradowsky

发明人： James Edward Myers ,  John Philip Biggs ,  David Walter Flynn ,  Carsten Tradowsky

IPC分类号： G11C5/14

CPC分类号： G11C14/0054

摘要： Apparatus for storing a data value in the form of a master-slave latch supporting zig-zag power gating is described. A NAND gate 52 at the output of the latch forces a predetermined retention signal value at the output from the latch during a retention mode. A scan multiplexer 42 at the input to the latch selects the scan input, which is the predetermined retention signal from another latch, during the retention mode. Within the latch power gated circuitry 32 is subject to zig-zag power gating using virtual power rails VDDZ and VSSZ so as to reduce the leakage current. State storing circuitry 34 is permanently connected to the power supplies VDDG, VSSG such that it is able to maintain whatever signal value is stored therein during the retention mode.

摘要翻译： 描述了以支持Z形电源门控的主从锁存器的形式存储数据值的装置。 在锁存器的输出处的NAND门52在保持模式期间迫使来自锁存器的输出处的预定保持信号值。 在锁存器的输入处的扫描多路复用器42在保持模式期间选择作为来自另一锁存器的预定保持信号的扫描输入。 在闩锁电源选通电路32内，使用虚拟电源轨VDDZ和VSSZ进行Z形电源门控，以减少漏电流。 状态存储电路34永久地连接到电源VDDG，VSSG，使得能够在保持模式期间保持其中存储的任何信号值。

公开(公告)号：US07315796B2

公开(公告)日：2008-01-01

申请号：US11430903

申请日：2006-05-10

申请人： David Walter Flynn

发明人： David Walter Flynn

IPC分类号： G06F15/00

CPC分类号： G06F1/3237 ,  G06F1/3203 ,  G06F1/324 ,  G06F1/3296 ,  Y02D10/124 ,  Y02D10/126 ,  Y02D10/128 ,  Y02D10/172

摘要： A processor 46 operating under program instruction control generates a desired performance level request. A mapping circuit then maps this to a control signal, such as a thermometer coded control signal, which is supplied to further circuits which require control so as to support the desired data processing performance level. These further circuits can include a clock generator 4 and a voltage controller 6.

摘要翻译： 在程序指令控制下操作的处理器46产生期望的性能等级请求。 然后，映射电路将其映射到诸如温度计编码控制信号的控制信号，其被提供给需要控制以支持期望的数据处理性能水平的另外的电路。 这些另外的电路可以包括时钟发生器4和电压控制器6。

公开(公告)号：US07206982B1

公开(公告)日：2007-04-17

申请号：US10868342

申请日：2004-06-16

申请人： Dipesh Ishwerbhai Patel ,  David Walter Flynn ,  Michael Peter Muller

发明人： Dipesh Ishwerbhai Patel ,  David Walter Flynn ,  Michael Peter Muller

IPC分类号： G01R31/28

CPC分类号： G01R31/2884 ,  G01R31/3025

摘要： A diagnostic mechanism for an integrated circuit 2 uses a radio interface circuit 16 to provide communication between an external diagnostic device 22 and one or more diagnostic circuits 26, 28 within the integrated circuit 2. The use of a radio communication link for diagnostic data and control reduces the required pin count for the integrated circuit 2.

摘要翻译： 集成电路2的诊断机构使用无线电接口电路16来提供外部诊断装置22与集成电路2内的一个或多个诊断电路26,28之间的通信。 使用用于诊断数据和控制的无线电通信链路减少了集成电路2所需的引脚数。