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    • 10. 发明申请
    • DELAY LOCKED LOOP OF SEMICONDUCTOR INTEGRATED CIRCUIT AND METHOD FOR DRIVING THE SAME
    • 半导体集成电路的延迟锁定环及其驱动方法
    • US20110267118A1
    • 2011-11-03
    • US12938081
    • 2010-11-02
    • Dong-Suk SHIN
    • Dong-Suk SHIN
    • H03L7/06
    • H03L7/0818
    • A delay locked loop (DLL) of a semiconductor integrated circuit includes a first delay line configured to variably delay a source clock signal and output a locked clock signal, a phase comparator configured to compare the phase of the source clock signal with the phase of a feedback clock signal, a second delay line configured to variably delay the locked clock signal, a first delay controller configured to control the first delay time of the first delay line, a second delay controller configured to control the minimum delay time of the second delay line, and an operation mode controller configured to control the first and second delay controllers in response to an output signal of the phase comparator, and switch operation modes of the first and second delay controllers depending on locking state of the delay lines.
    • 半导体集成电路的延迟锁定环(DLL)包括:第一延迟线,被配置为可变地延迟源时钟信号并输出​​锁定的时钟信号;相位比较器,被配置为将源时钟信号的相位与 反馈时钟信号,被配置为可变延迟锁定的时钟信号的第二延迟线;配置成控制第一延迟线的第一延迟时间的第一延迟控制器,被配置为控制第二延迟线的最小延迟时间的第二延迟控制器 以及操作模式控制器,被配置为响应于相位比较器的输出信号来控制第一和第二延迟控制器,以及根据延迟线的锁定状态的第一和第二延迟控制器的切换操作模式。