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    • 5. 发明公开
    • REGENERATIVE CLOCK REPEATER
    • REGENERATIVERTAKTZWISCHENVERSTÄRKER
    • EP1636903A4
    • 2007-03-28
    • EP04752608
    • 2004-05-18
    • ATMEL CORP
    • SIVERO STEFANOFRULIO MASSIMILIANO
    • H03K5/01G06F1/10H01L20060101H03K17/16H03K19/017
    • H03K19/01721G06F1/10
    • A regenerative clock repeater (Fig. 5; 700) comprises an edge detector (Fig. 6; 500) and an output driver means (706) to produce the clock signal (CK) by recovering its high logical level and low logical level. The output driver means further comprises a pull-up (706A) and a pull-down (706B) circuitry adapted to receive a pair of control signals (PULL-UP#, PULL-DOWN#). These control signals are generated by the edge detector to sense the rising edge and falling edge of the clock signal. Inside the edge detector, a pair of threshold level detectors (540, 550) detect a high and a low logical level of the clock signal and inputs the results to a combination of logic gates (562, 564, 568, 570) and a latch (566) to keep the locations of the signal markers fixed. These fixed-location of control signals trigger the output driver means to recover the high logical level and the low logical level of said clock signal.
    • 再生时钟中继器(图5; 700)包括边缘检测器(图6; 500)和输出驱动器装置(706),以通过恢复其高逻辑电平和低逻辑电平来产生时钟信号(CK)。 输出驱动器装置还包括适用于接收一对控制信号(上拉#,下拉#)的上拉(706A)和下拉(706B)电路。 这些控制信号由边缘检测器产生以感测时钟信号的上升沿和下降沿。 在边缘检测器内部,一对阈值电平检测器(540,550)检测时钟信号的高和低逻辑电平,并将结果输入到逻辑门(562,564,568,570)和锁存器 (566)保持信号标记的位置固定。 控制信号的这些固定位置触发输出驱动器装置以恢复所述时钟信号的高逻辑电平和低逻辑电平。