Title:
SPREAD SPECTRUM CLOCK GENERATOR AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/134925
Kind Code:
A1
Abstract:
Disclosed in the present invention are a spread spectrum clock generator and an electronic device. The spread spectrum clock generator comprises a modulation period module circuit, a spread spectrum depth module circuit, and a clock circuit. The modulation period module circuit divides a fundamental frequency output by the clock circuit to obtain a spread spectrum period signal, a spread spectrum direction switching signal, and a charging pulse period signal, and processes the charging pulse period signal to obtain a charging pulse signal; the spread spectrum depth module circuit generates a bias current on the basis of the spread spectrum period signal, the spread spectrum direction switching signal, and the charging pulse signal, and inputs the bias current to the clock circuit, so that the clock circuit generates a spread spectrum on the basis of the bias current. Since the modulation period module circuit, the spread spectrum depth module circuit, and the clock circuit are all integrated inside a spread spectrum clock generator chip circuit, a peripheral device does not need to be added outside the spread spectrum clock generator chip circuit while the spread spectrum is generated, thereby increasing the layout area of the entire circuit, and reducing the hardware cost brought by the peripheral device.
Inventors:
YIN XIAOWEN (CN)
WU SIMIN (CN)
HUI XINYING (CN)
WU SIMIN (CN)
HUI XINYING (CN)
Application Number:
PCT/CN2021/130325
Publication Date:
June 30, 2022
Filing Date:
November 12, 2021
Export Citation:
Assignee:
SHANGHAI AWINIC TECHNOLOGY CO LTD (CN)
International Classes:
H03L7/14; H03L7/087
Foreign References:
| CN112615622A | 2021-04-06 | |||
| CN108712160A | 2018-10-26 | |||
| CN111698628A | 2020-09-22 | |||
| CN101719762A | 2010-06-02 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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