发明授权
- 专利标题： Circuit and method for controlling a spread spectrum transition
- 专利标题（中）： 用于控制扩频转换的电路和方法
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申请号： US09436522申请日： 1999-11-09
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公开(公告)号： US06850554B1公开(公告)日： 2005-02-01
- 发明人: I-Teh Sha , Kuang-Yu Chen , Albert Chen
- 申请人： I-Teh Sha , Kuang-Yu Chen , Albert Chen
- 申请人地址： US CA San Jose
- 专利权人： Cypress Semiconductor Corp.
- 当前专利权人： Cypress Semiconductor Corp.
- 当前专利权人地址： US CA San Jose
- 代理商 Christopher P. Maiorana, PC
- 主分类号： H03L7/089
- IPC分类号： H03L7/089 ; H03L7/193 ; H04B1/707 ; H04J13/00 ; H03D1/04
摘要：
A circuit and method for controlling a spread spectrum transition are presented comprising a first circuit and a second circuit. The first circuit may be configured to generate a clock signal in response to (i) a reference signal, (ii) a sequence of spread spectrum ROM codes, and (iii) a command signal. The second circuit may be configured to synchronize the command signal to a feedback signal. The sequence of spread spectrum ROM codes may be generated according to a predetermined mathematical formula and optimized in accordance with predetermined criteria.