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CPU的休眠信号

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发表于: 2013-3-21 23:49:37
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STPCLK#南桥发给CPU通知CPU降频,CPUSLP#CPU进入睡眠状态,纬创的机器当开机误操作是会让CPU降频而导致开机速度特别慢。
  南桥发出DPSLP#CPUCPU进入深度睡眠状态,CPU进入深度睡眠以后南桥再发出STPCPU#到时钟IC关闭CPU的时钟,以上信号在正常条件下应该为高电位,当为低电平时说明信号有效。可以通过断开信号相连的电阻去掉睡眠信号。通过打DPSLP#STPCPU#两个点与南桥的对地阻值判断是不是南桥损坏而发出的错误逻辑。如果一个电脑所有时钟都有但是只有CPU没有时钟先查STPCPU#这个信号逻辑是否正常。
  当时钟IC关闭CPU时钟以后 南桥再发出DPRSLPVRDPRSTP#CPU的供电芯片降低CPU核心电压。
PSI#  DPRSLPVR   DPRSTP#
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发表于: 2016-12-8 04:44:16
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STPCLK # Southbridge distributed CPU notify the CPU down, CPUSLP # , CPU goes to sleep, Wistron machine malfunction when the power is to make CPU frequency reduction caused by extremely slow boot.
  Southbridge issue DPSLP # to the CPU so that CPU into a deep sleep state, CPU into a deep sleep again after Southbridge issue STPCPU # clock IC closed CPU clock signal should be more than a high level, when the legend is low in normal conditions signal is valid. It can get rid of the sleep signal through a resistor connected to the disconnect signal. By playing DPSLP # and STPCPU # logical error two points Southbridge ground resistance judge is not damaged Southbridge issued. If a computer has all the clocks, but only CPU no clock to check STPCPU # This logic signal is normal.
  When the clock IC closed CPU clock after Southbridge to issue DPRSLPVR and DPRSTP # to CPU power chip reduces CPU core voltage.
PSI#  DPRSLPVR   DPRSTP#
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