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Hello everyone, today we will learn about the light sleep standby conditions
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in the standard timing of Intel's 10th to 12th generation low-power CPU chipsets
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The light sleep standby condition is also called the main standby condition
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The first signal is SLP_SUS#
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This is the deep sleep state indication signal sent by the PCH module inside the CPU,
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which is used to control the opening and closing of the main standby voltage
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When deep sleep is not supported, this signal will be suspended and not used
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If deep sleep is supported,
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it will be used to turn on or off the main standby power supply
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The second one, V5.0A, which is not shown in the circuit diagram, so I won't explain it here
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The third one, EXT_PWR_GATE#, is an external power control signal, which is generally not used
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VCCPRIM_3P3 refers to the 3.3V main standby power supply
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VCCPRIM_1P8 is the 1.8V main standby power supply of the CPU
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VCCIN_AUX is to supply power to the non-core FIVR inside the CPU,
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which is equivalent to supplying power to a common point inside the CPU, with a voltage of 1.8V
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VCC1P05_OUT_PCH, VCC1P05_OUT_FET,
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these two are the power supply for the internal output of the CPU, 1.05V
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VNN_BYPASS, V1.05A_BYPASS, these two cannot be found in the circuit diagram, we will not explain here
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The last one, RSMRST#, is the good signal of the main standby power supply of the CPU,
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indicating that the above main standby power supplies are all normal, 3.3V,
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and it is also the reset of the ACPI controller inside the PCH
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OK, this is the light sleep standby condition