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    • 3. 发明授权
    • DLL 회로 및 DLL 제어방법
    • DLL회로및DLL제어방법
    • KR100408101B1
    • 2003-12-03
    • KR1020010042341
    • 2001-07-13
    • 르네사스 일렉트로닉스 가부시키가이샤닛뽕덴끼 가부시끼가이샤
    • 미야노가즈따까
    • H03L7/00
    • H03K5/1565H03K5/08H03K5/133H03L7/0814H03L7/087Y10S331/02
    • A delay locked loop (DLL) circuit (10) can include first phase decision circuit (1), a second phase decision circuit (2), an arbitrary phase generator circuit (3), and a variable pulse width circuit (4). First phase decision circuit (1) may receive an external clock signal (D1) and an internal clock signal (D3) and may generate a phase decision signal (D4) that may indicate whether a first edge of internal clock signal (D3) is to be sped-up or delayed. Arbitrary phase generator circuit (3) may provide a phase shifted signal based on phase decision signal (D4). Second phase decision circuit (2) may receive external clock signal (D1) and internal clock signal (D3) and may generate a phase decision signal (D5) that may indicate whether a second edge of internal clock signal (D3) is to be sped-up or delayed. Variable pulse width circuit (4) may receive the phase shifted signal and delay a falling edge based on phase decision signal (D5).
    • 延迟锁定环(DLL)电路(10)可以包括第一相位判定电路(1),第二相位判定电路(2),任意相位发生器电路(3)和可变脉冲宽度电路(4)。 第一相位判定电路(1)可以接收外部时钟信号(D1)和内部时钟信号(D3),并且可以产生可以指示内部时钟信号(D3)的第一边缘是否要接收的相位判定信号(D4) 加快或延迟。 任意相位发生器电路(3)可以基于相位判定信号(D4)提供相移信号。 第二相位判定电路(2)可以接收外部时钟信号(D1)和内部时钟信号(D3)并且可以产生相位判定信号(D5),其可以指示内部时钟信号(D3)的第二边缘是否将被调速 或延迟。 可变脉宽电路(4)可以接收相移信号并基于相位判定信号(D5)延迟下降沿。
    • 5. 发明公开
    • DLL 회로 및 DLL 제어방법
    • DLL电路和DLL控制方法
    • KR1020020007208A
    • 2002-01-26
    • KR1020010042341
    • 2001-07-13
    • 르네사스 일렉트로닉스 가부시키가이샤닛뽕덴끼 가부시끼가이샤
    • 미야노가즈따까
    • H03L7/00
    • H03K5/1565H03K5/08H03K5/133H03L7/0814H03L7/087Y10S331/02
    • PURPOSE: To provide a DLL (Delay Locked Loop) circuit that provides an output of a clock signal of one system fixed with respect to both leading and trailing edges of a clock signal with a decreased chip size and reduced power consump tion. CONSTITUTION: A 1st phase decision circuit 1 and a 2nd phase decision circuit 2 receive an internal clock outputted from a pulse width variable circuit 4, the 1st phase decision circuit 1 decides a phase relation between an external clock D1 and the internal clock D3 to provide an output of a 1st phase decision signal D4, and the 2nd phase decision circuit 2 decides a phase relation between the external clock D1 and the internal clock D3 to provide an output of a 2nd phase decision signal D5. An optional phase generating circuit 3 adjusts a phase a reference clock D2 on the basis of the 1st phase decision signal D4 to output an adjusted reference clock D2' to the pulse width variable circuit 4, and the pulse width variable circuit 4 adjusts the pulse width of the adjusted reference clock D2' on the basis of the 2nd phase decision signal D3.
    • 目的:提供一个DLL(延迟锁定环路)电路,它提供一个系统的时钟信号的输出,该时钟信号相对于时钟信号的前沿和后沿固定,具有减小的芯片尺寸和降低的功耗。 构成:第一相位判定电路1和第二相位判定电路2接收从脉冲宽度可变电路4输出的内部时钟,第一相位判定电路1判定外部时钟D1与内部时钟D3之间的相位关系,以提供 第一相位判定信号D4的输出,第二相位判定电路2决定外部时钟D1和内部时钟D3之间的相位关系,以提供第二相位判定信号D5的输出。 可选择的相位产生电路3基于第一相位判定信号D4来调整参考时钟D2的相位,以将调整的基准时钟D2'输出到脉冲宽度可变电路4,并且脉冲宽度可变电路4调整脉冲宽度 基于第二相位判定信号D3调整的基准时钟D2'。