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    • 41. 发明授权
    • Clock distribution network
    • 时钟分配网络
    • US5565816A
    • 1996-10-15
    • US516735
    • 1995-08-18
    • Paul W. Coteus
    • Paul W. Coteus
    • G06F1/10H03K5/15H03L7/07H03K3/00H03K5/13H03L7/18
    • G06F1/10H03K5/1506H03L7/07
    • A clock distribution network for synchronously coupled electronic communication systems that includes a clock distribution device having a phase locked loop for synchronizing the external clock signals provided to each semiconductive device with each other. The clock distribution device distributes a low speed clock to a large number of clocked semiconductor devices where those devices then internally generate high speed clocks in phase with the low speed clock. The low speed clocks are phase shifted with respect to each other to reduce radiated energy. The ratio of internal to external clock speed is also communicated to each chip so that the chips can be programmed to operate with a variety of external clock speeds. The phase shifting of the external clock to different chips is provided so that the chips can still communicate synchronously at the high speed internal clock.
    • 一种用于同步耦合电子通信系统的时钟分配网络,其包括具有用于使提供给每个半导体装置的外部时钟信号彼此同步的锁相环的时钟分配装置。 时钟分配器件将低速时钟分配给大量的时钟半导体器件,在那些器件内部将与低速时钟同相内部生成高速时钟。 低速时钟相对于彼此相移以减少辐射能量。 内部与外部时钟速度的比率也传达到每个芯片,使得芯片可以被编程为以各种外部时钟速度运行。 提供外部时钟到不同芯片的相移,使得芯片仍然可以在高速内部时钟同步地通信。