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发明名称
延迟锁相回路电路
摘要
一种延迟锁相回路(DLL)电路,系运用一个除频装置,使得一个用于系统外部之外部输入时钟与一个用于系统内部之内部输入时钟同步。该DLL电路包含一组侦测装置,用以侦测外部输入时钟之脉冲频宽的范围是否比参照设定值更小。当除频装置侦测到外部输入时钟之脉冲频宽的范围比参照设定值更大时,即输出第一个除频信号,当其侦测到外部输入时钟之脉冲频宽较参照设定值更小时,即输出第二个除频信号。此种DLL电路即使在外部输入周期短暂的情况下,仍可照常运作。
申请公布号
TW200423545
申请公布日期
2004.11.01
申请号
TW092126150
申请日期
2003.09.23
申请人
海力士半导体股份有限公司
发明人
李在真
分类号
H03L7/06
主分类号
H03L7/06
代理机构
代理人
郑再钦
主权项
地址
韩国
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