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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
This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/, or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.