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公开(公告)号：US20140210565A1
公开(公告)日：2014-07-31
申请号：US13754873
申请日：2013-01-30
摘要： Systems and methods for amplitude loop control for oscillators. In some embodiments, an electronic circuit may include oscillator circuitry configured to produce a periodic signal, and control circuitry operably coupled to the oscillator circuitry, the control circuitry including switched capacitor circuitry configured to determine a difference between maximum and minimum peak voltage values of the periodic signal, the control circuit configured to control a voltage amplitude of the periodic signal based upon the difference. In other embodiments, a method may include receiving a clock signal from a clock generator, determining, using a switched capacitor circuit, a first peak voltage value of the clock signal, determining, using the switched capacitor circuit, a second peak voltage value of the clock signal, and controlling a bias current applied to the clock generator based upon a difference between the first and second peak voltage values.
摘要翻译： 用于振荡器振幅环路控制的系统和方法。 在一些实施例中，电子电路可以包括被配置为产生周期性信号的振荡器电路和可操作地耦合到振荡器电路的控制电路，所述控制电路包括开关电容器电路，其被配置为确定周期性的最大和最小峰值电压值之间的差异 信号，所述控制电路被配置为基于所述差异来控制所述周期信号的电压幅度。 在其他实施例中，一种方法可以包括从时钟发生器接收时钟信号，使用开关电容器电路确定时钟信号的第一峰值电压值，使用开关电容器电路确定第二峰值电压值 并且基于第一和第二峰值电压值之间的差来控制施加到时钟发生器的偏置电流。
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公开(公告)号：US20100156470A1
公开(公告)日：2010-06-24
申请号：US12339938
申请日：2008-12-19
IPC分类号： H03K5/22
CPC分类号： H03K3/0377 , G01R19/0084 , G06F1/28 , G06F1/3203 , H03K17/22
摘要： A voltage detector device is disclosed that includes a coarse-range voltage detector and a fine-range voltage detector. The fine-range voltage detector is configured to remain inactive, so that it consumes a relatively small amount of power, while a monitored voltage is outside a first specified range. In response to determining that the monitored voltage is within the first specified range, the coarse-range voltage detector activates the fine-range voltage detector so that it can monitor the voltage. In response to the fine-voltage monitor determining the voltage falls within a second specified range, the fine-range voltage detector provides a signal to a functional module of an electronic device so that the functional module can provide a defined response, such as executing an interrupt routine.
摘要翻译： 公开了一种包括粗范围电压检测器和精细范围电压检测器的电压检测器装置。 微距电压检测器被配置为保持不活动，使得其消耗相对较小量的功率，而监视的电压在第一指定范围之外。 响应于确定监视电压在第一指定范围内，粗范围电压检测器激活微距电压检测器，使得其可以监测电压。 响应于精细电压监视器确定电压落在第二指定范围内，微距电压检测器向电子设备的功能模块提供信号，使得功能模块可以提供定义的响应，例如执行 中断程序。
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3.发明授权公开(公告)号：US08330502B2
公开(公告)日：2012-12-11
申请号：US12625982
申请日：2009-11-25
CPC分类号： H03K19/00384
摘要： Apparatus, systems and methods are provided for protecting a processing system from electromagnetic interference. An integrated circuit comprises a sensing arrangement configured to sense an interference signal and an interference detection module coupled to the sensing arrangement. The interference detection module is configured to detect when a power level associated with the interference signal is greater than a threshold value. In one embodiment, the interference detection module generates an interrupt for a processing system when the power level associated with the interference signal is greater than the threshold value.
摘要翻译： 提供了用于保护处理系统免受电磁干扰的装置，系统和方法。 集成电路包括被配置为感测干扰信号的感测装置和耦合到感测装置的干扰检测模块。 干扰检测模块被配置为检测与干扰信号相关联的功率电平何时大于阈值。 在一个实施例中，当与干扰信号相关联的功率电平大于阈值时，干扰检测模块产生用于处理系统的中断。
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公开(公告)号：US08922287B2
公开(公告)日：2014-12-30
申请号：US13754873
申请日：2013-01-30
摘要： Systems and methods for amplitude loop control for oscillators. In some embodiments, an electronic circuit may include oscillator circuitry configured to produce a periodic signal, and control circuitry operably coupled to the oscillator circuitry, the control circuitry including switched capacitor circuitry configured to determine a difference between maximum and minimum peak voltage values of the periodic signal, the control circuit configured to control a voltage amplitude of the periodic signal based upon the difference. In other embodiments, a method may include receiving a clock signal from a clock generator, determining, using a switched capacitor circuit, a first peak voltage value of the clock signal, determining, using the switched capacitor circuit, a second peak voltage value of the clock signal, and controlling a bias current applied to the clock generator based upon a difference between the first and second peak voltage values.
摘要翻译： 用于振荡器振幅环路控制的系统和方法。 在一些实施例中，电子电路可以包括被配置为产生周期性信号的振荡器电路和可操作地耦合到振荡器电路的控制电路，所述控制电路包括开关电容器电路，其被配置为确定周期性的最大和最小峰值电压值之间的差异 信号，所述控制电路被配置为基于所述差异来控制所述周期信号的电压幅度。 在其他实施例中，一种方法可以包括从时钟发生器接收时钟信号，使用开关电容器电路确定时钟信号的第一峰值电压值，使用开关电容器电路确定第二峰值电压值 并且基于第一和第二峰值电压值之间的差来控制施加到时钟发生器的偏置电流。
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公开(公告)号：US07839189B2
公开(公告)日：2010-11-23
申请号：US12339938
申请日：2008-12-19
IPC分类号： H03L7/00
CPC分类号： H03K3/0377 , G01R19/0084 , G06F1/28 , G06F1/3203 , H03K17/22
摘要： A voltage detector device is disclosed that includes a coarse-range voltage detector and a fine-range voltage detector. The fine-range voltage detector is configured to remain inactive, so that it consumes a relatively small amount of power, while a monitored voltage is outside a first specified range. In response to determining that the monitored voltage is within the first specified range, the coarse-range voltage detector activates the fine-range voltage detector so that it can monitor the voltage. In response to the fine-voltage monitor determining the voltage falls within a second specified range, the fine-range voltage detector provides a signal to a functional module of an electronic device so that the functional module can provide a defined response, such as executing an interrupt routine.
摘要翻译： 公开了一种包括粗范围电压检测器和精细范围电压检测器的电压检测器装置。 微距电压检测器被配置为保持不活动，使得其消耗相对较小量的功率，而监视的电压在第一指定范围之外。 响应于确定监视电压在第一指定范围内，粗范围电压检测器激活微距电压检测器，使得其可以监测电压。 响应于精细电压监视器确定电压落在第二指定范围内，微距电压检测器向电子设备的功能模块提供信号，使得功能模块可以提供定义的响应，例如执行 中断程序。
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