CN102790617B - Usb主机接口的免晶振实现电路和方法 - Google Patents
Usb主机接口的免晶振实现电路和方法 Download PDFInfo
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- CN102790617B CN102790617B CN201210250053.XA CN201210250053A CN102790617B CN 102790617 B CN102790617 B CN 102790617B CN 201210250053 A CN201210250053 A CN 201210250053A CN 102790617 B CN102790617 B CN 102790617B
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CN102790617A CN102790617A (zh) | 2012-11-21 |
CN102790617B true CN102790617B (zh) | 2014-11-12 |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102999466B (zh) * | 2012-11-26 | 2015-03-11 | 成都锐成芯微科技有限责任公司 | Usb1.1设备接口的免晶振简易实现电路 |
CN102981995B (zh) * | 2012-11-26 | 2015-09-16 | 成都锐成芯微科技有限责任公司 | Usb设备接口的内建晶振实现电路及方法 |
EP2972926B1 (en) * | 2013-03-12 | 2017-08-23 | Microchip Technology Incorporated | Method and apparatus for clock recovery |
CN104915305A (zh) * | 2014-03-11 | 2015-09-16 | 泰凌微电子(上海)有限公司 | 一种usb设备的芯片及其频率校准方法 |
US10505552B2 (en) * | 2017-03-31 | 2019-12-10 | Stmicroelectronics International N.V. | Locked loop circuit with reference signal provided by un-trimmed oscillator |
CN107968648A (zh) * | 2017-11-17 | 2018-04-27 | 珠海亿智电子科技有限公司 | 一种校准无晶振usb设备内部振荡器时钟的系统 |
Citations (6)
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US7093151B1 (en) * | 2000-09-22 | 2006-08-15 | Cypress Semiconductor Corp. | Circuit and method for providing a precise clock for data communications |
CN201166830Y (zh) * | 2007-06-19 | 2008-12-17 | 深圳希格玛和芯微电子有限公司 | 一种计算机键盘 |
CN101443666A (zh) * | 2006-02-27 | 2009-05-27 | 硅谷实验室公司 | 无基准时钟电路 |
CN201887731U (zh) * | 2010-09-25 | 2011-06-29 | 苏州华芯微电子股份有限公司 | 可修调的高精度rc振荡电路 |
CN102331979A (zh) * | 2011-09-28 | 2012-01-25 | 成都市芯锐微电子有限公司 | 应用于usb设备的动态时钟频率校准方法 |
CN202772868U (zh) * | 2012-07-19 | 2013-03-06 | 成都锐成芯微科技有限责任公司 | Usb主机接口的免晶振实现电路 |
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Patent Citations (6)
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US7093151B1 (en) * | 2000-09-22 | 2006-08-15 | Cypress Semiconductor Corp. | Circuit and method for providing a precise clock for data communications |
CN101443666A (zh) * | 2006-02-27 | 2009-05-27 | 硅谷实验室公司 | 无基准时钟电路 |
CN201166830Y (zh) * | 2007-06-19 | 2008-12-17 | 深圳希格玛和芯微电子有限公司 | 一种计算机键盘 |
CN201887731U (zh) * | 2010-09-25 | 2011-06-29 | 苏州华芯微电子股份有限公司 | 可修调的高精度rc振荡电路 |
CN102331979A (zh) * | 2011-09-28 | 2012-01-25 | 成都市芯锐微电子有限公司 | 应用于usb设备的动态时钟频率校准方法 |
CN202772868U (zh) * | 2012-07-19 | 2013-03-06 | 成都锐成芯微科技有限责任公司 | Usb主机接口的免晶振实现电路 |
Non-Patent Citations (2)
Title |
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刘生有等.高稳定性无片外电容低压差线性稳压器的设计.《半导体技术》.2011,(第07期),538-541. * |
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CN102790617A (zh) | 2012-11-21 |
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Address after: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 Building 2 Room 302 Patentee after: Chengdu Rui core micro Polytron Technologies Inc Address before: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 Building 2 Room 302 Patentee before: Chengdu Ruicheng Xinwei Technology Co., Ltd. |
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Denomination of invention: Crystal oscillator-free realization circuit and method for USB host interface Effective date of registration: 20180702 Granted publication date: 20141112 Pledgee: Agricultural Bank of China Limited by Share Ltd Chengdu Shuangliu Branch Pledgor: Chengdu Rui core micro Polytron Technologies Inc Registration number: 2018510000065 |
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