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主板上电时序解释
ACPI-高级电源管理 Advanced Configuration and Power Interface 六种状态 S0–Working Status,所有设备全开,功耗一般会超过80W S1–POS(Power on Suspend),这时除了通过CPU时钟控制器将CPU关闭之外,其他的部 件仍然正常工作，这时的功耗一般在30W 以下(有些CPU降温软件就是利用这种工作原理) S2– CPU处于停止运作状态,总线时钟也被关闭,但其余的设备仍然运转 S3–STR(Suspend to RAM), 这时的功耗不超过10W S4–STD(Suspend to Disk),这时系统主电源关闭,但是硬盘仍然带电并可以被唤醒 S5–Soft Off,电源在内的所有设备全部关闭,功耗为0 以华硕 P5GD1 为例的上电时序如下： 第一阶段： 该阶段的电源有battery电源和standby电源 RSMRST#:当SB电压OK时由IO发出的触发 南桥内SB电路的RST信号 第二阶段： 准备上电阶段 PWRBTN# IO_PWRBTN# S3#,S4# PSON# 各信号无误后到第三阶段 第三阶段：
新架构开机时序与 G31/G33 架构分析
1Intel 开机时序可以分成 4 个阶段 1-RSMRST# 2-PSON# 3-PWROK# 4-RST# 1:RSMRST#是图中 1-2,这个阶段电源有电池和 Standby 电压 标志:RTCRST#,RSMRST#由底变高 2：PSON#是图中 3-6,标志 PSON#有高变底.PSON#发出后推出+3V, +5V,+12V 3:图中 7-8 OK 信号(11 特殊) 4:RST# 9,10,12 为 RST,当南桥收到 PWROK#就会把 RST#置为高电平 当 CPU 收到 PG 信号 RST#信号后则代表开机时序完成. 12 步 RST 结束后 CPU 发出第一条指令剩下的就是
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C . M O C Power On Sequence . X I F A Tomzeng N I DQA2 H C 2003-11-12 . W W W 1 N C (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:9)(cid:10)(cid:11)(cid:12)(cid:13)(cid:4)(cid:9)(cid:1)(cid:14)(cid:15)(cid:12)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:2)(cid:2)(cid:2)(cid:3)(cid:3)(cid:3)(cid:3)(cid:4)(cid:4)(cid:4)(cid:4)(cid:5)(cid:5)(cid:5)(cid:5)(cid:6)(cid:6)(cid:6)(cid:6)(cid:16)(cid:17)(cid:18)(cid:11)(cid:19)(cid:20)(cid:10)(cid:21) . M O C . X I F A N I H
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Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.0 Design Guidelines July 2005 Document Number: 302731-002 None None VRM and EVRD 10.0 Design Guidelines R INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS
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Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.0 Design Guidelines July 2005 Document Number: 302731-002 None None VRM and EVRD 10.0 Design Guidelines R INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS
Basic circuit troubleshooting
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