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    • 2. 发明申请
    • DATA TRANSFER BETWEEN CLOCK DOMAINS
    • 时钟域之间的数据传输
    • WO2014001764A1
    • 2014-01-03
    • PCT/GB2013/051607
    • 2013-06-20
    • NORDIC SEMICONDUCTOR ASASAMUELS, Adrian
    • HJERTØ, Markus BakkaVENÅS, Arne Wanvik
    • G06F5/06G06F1/12
    • G06F1/12G06F1/10G06F5/06
    • A system (1) for transferring a data signal (sig_fast) from a first clock domain (4) to a second clock domain (8). The first clock domain (4) has a first clock (ck_fast) with a frequency greater than the frequency of a second clock (ck_slow) in the second clock domain (8). The system (1) also has a signal input (10) for receiving an input signal (sig_fast) from the first clock domain (4), means (16, 18) for checking whether the second clock (ck_slow) is in a part of its cycle away from a forthcoming transition, and means (22) for transferring the input signal (sig_fast) to the second clock domain (8) if the checking means (16, 18) determines that the second clock (ck_slow) is in part of its cycle away from a forthcoming transition. The checking means (16, 18) are clocked by the first clock (ck_fast).
    • 一种用于将数据信号(sig_fast)从第一时钟域(4)传送到第二时钟域(8)的系统(1)。 第一时钟域(4)具有频率大于第二时钟域(8)中的第二时钟(ck_slow)的频率的第一时钟(ck_fast)。 系统(1)还具有用于从第一时钟域(4)接收输入信号(sig_fast)的信号输入(10),用于检查第二时钟(ck_slow)是否位于 如果所述检查装置(16,18)确定所述第二时钟(ck_slow)是所述第二时钟(ck_slow)的一部分,则将所述输入信号(sig_fast)传送到所述第二时钟域(8)的装置(22) 其周期远离即将到来的转型。 检查装置(16,18)由第一时钟(ck_fast)计时。