按开机键之前：持续供电BIOS和EC(SIO)
按开机键之后：
3.3 Volt
5 Volt
1.8 Volt
1.5 Volt
1.05 Volt
CPU CORE
0.9 GFX Core
PCH接收SYS PWR OK信号
PCH复位主板
CLOCK开始工作
CPU开始工作，读BIOS
上电自检
主板状态：
S0： 所有元件上电，功能开启
S1, S2, S3： 睡眠模式，只有RAM保持供电
S4，S5： RAM数据保存到硬盘里，全部掉电
Always Supply Voltage Type (ALWS or AUX or AL)，S4,S5:
5 Volt DC
3.3 Volt DC
Suspension Voltage Type (SUS ON)，S1, S2, S3：
5 Volt DC
3.3 Volt DC
RAM voltage (For DDR1 – 2.5 Volt, For DDR2 – 1.8 Volt, For DDR3 – 1.5 Volt, For DDR4 – 1.2 Volt)
Power On Voltage Type (RUN),S0:
3.3 Volt
5 Volt
1.8 Volt
1.5 Volt
1.05 Volt
CPU CORE
0.9 GFX Core
CPU Core电压：
CPU Core = 0.8 Volt to 1.5 Volt / 20 Ampere to 30 Ampere.
GFX Core = 0.8 Volt to 1.5 Volt / 10 Ampere to 20 Ampere.
上电顺序：
| SIGNAL NAME | DESCRIPTION |
|---|---|
| VCC | 3 Volt power to SIO and BIOS |
| ECRST | RESET to SIO |
| LID SWITCH,THERMTRIP | The lid sensor should work,The thermal trip should normal |
| Clock SIO | 32.7khz clock from either PCH |
| EC BIOS | EC BIOS should perfect |
| RTCRST | RTC RESET and crystal 32khz should to PCH |
| VCCDSW3_3 | Power to PCH |
| DPWROK | Power OK Indication for the VccDSW3_3 voltage rail |
| PWRBTN (NBSON) | Power switch 3 – 0 – 3 variation |
| RSMRST | SIO generates 3 Volt at this pin |
| PM_PWRBTN (DNBSWON) | Post power button to PCH 3 Volt variation. |
| SLP_4,SLP_3 | PCH generates 3 Volts send to SIO giving confirmation to turn on the power |
| SYSON, SUSP, VR ON | All buck converters turn on one by one |
S4,S5模式下内存条不供电3.3V，供电1.2V、2.5V和0.6VREF.