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A wireless communication wake-up circuit

A wake-up circuit and wireless communication technology, applied in the direction of electrical components, automatic power control, etc., can solve the problems of power consumption, long wake-up advance time, etc., and achieve the effect of reducing power consumption and shortening the wake-up time

Active Publication Date: 2019-05-21
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application proposes a wireless communication wake-up circuit, which is used to overcome the fact that the start-up of the wake-up preparation of the existing wireless communication circuit is longer than the wake-up time, resulting in unnecessary power consumption.

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  • A wireless communication wake-up circuit
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Embodiment Construction

[0017] In order to make the technical solutions and advantages of the present application clearer, the exemplary embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all implementations. Exhaustive list of examples. And in the case of no conflict, the embodiments in this specification and the features in the embodiments can be combined with each other.

[0018] In the process of implementing the present application, taking the Bluetooth circuit as an example, the inventors found that the start of the wake-up preparation of the existing Bluetooth circuit is longer than the wake-up lead time, resulting in unnecessary power consumption. figure 1 It is a schematic diagram of an existing bluetooth circuit, such as figure 1 As shown, the Bluetooth circuit includes a low-power oscillator, a counter, a voltage...

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Abstract

The present application provides a wireless communication wake-up circuit, including: a voltage regulator and a phase-locked loop circuit, the voltage regulator supplies power to the phase-locked loop circuit according to a wake-up signal, in the wake-up signal When active, the voltage regulator supplies power to the phase locked loop circuit, and when the wake signal is invalid, the voltage regulator does not supply power to the phase locked loop circuit; When the (Wake) signal is active and the pre-awake (PreSet) signal is valid for the first time period, the phase-locked loop circuit generates a first clock signal according to the reference voltage signal (VF), and is active at the wake-up signal And when the pre-waking (PreSet) signal is inactive for a second time period, the phase-locked loop circuit generates a second clock signal according to a reference clock of the crystal oscillator in the phase-locked loop circuit. By adopting the wireless communication wake-up circuit design of the present application, the power consumption of the wireless communication can be effectively reduced.

Description

technical field [0001] The present application relates to the technical field of circuit design, in particular to a wireless communication wake-up circuit. Background technique [0002] Wireless communication technology has penetrated into all aspects of life and work, including daily mobile phone communications, wireless phones, WLAN (Wireless Local Area Networks, wireless local area network), UWB (Ultra Wideband, ultra-wideband), Bluetooth, broadband satellite systems, digital TV and so on are all popular applications of wireless communication technology. [0003] In the normal working mode of the existing wireless communication circuit, all the modules are in the working state, the voltage stabilizer works to supply power to the phase-locked loop circuit, and the phase-locked loop circuit generates clock signals to provide clock signals for other modules. [0004] When the wireless communication circuit is in breathing mode, the system works intermittently, usually relyi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/18H03L7/08
CPCH03L7/18
Inventor 王钊
Owner WUXI ZGMICRO ELECTRONICS CO LTD