发明授权
- 专利标题: Method for generating a spread spectrum clock and apparatus thereof
- 专利标题(中): 用于产生扩频时钟的方法及其装置
-
申请号: US12358261申请日: 2009-01-23
-
公开(公告)号: US08094698B2公开(公告)日: 2012-01-10
- 发明人: Meng-Han Hsieh , Chi-Shun Weng , Ming-Je Li , Kai-Yi Fang
- 申请人: Meng-Han Hsieh , Chi-Shun Weng , Ming-Je Li , Kai-Yi Fang
- 申请人地址: TW Science Park, HsinChu
- 专利权人: Realtek Semiconductor Corp.
- 当前专利权人: Realtek Semiconductor Corp.
- 当前专利权人地址: TW Science Park, HsinChu
- 代理商 Winston Hsu; Scott Margo
- 优先权: TW98102495A 20090122
- 主分类号: H04B1/69
- IPC分类号: H04B1/69
![Method for generating a spread spectrum clock and apparatus thereof](/abs-image/US/2012/01/10/US08094698B2/abs.jpg.150x150.jpg)
摘要:
A method for generating a spread spectrum clock includes the steps of providing a reference clock having a reference period; generating a plurality of output clocks respectively having different phases according to the reference clock; generating a first/second control signal according to the reference clock and a spread spectrum clock and starting a first/second duration accordingly; during the first/second duration, outputting a first/second selecting signal representing a first/second predetermined sequence according to the first/second control signal, wherein the second predetermined sequence is a substantial reversed sequence of the first predetermined sequence; and during the first/second duration, sequentially outputting some or all of the output clocks as the spread spectrum clock according to the first/second predetermined sequence.