Power on Sequnce

보통 power sequence of motherboard 라고 검색하면 좀처럼 마음에 드는 결과물을 얻을수 없다.
결론적으로 보드의 부팅과정을 검색하면 정보가 아직까징 없다.. 쉽게 설명된게 없다..한국말로

일단 ATX파워 생김새를 알아봐야 겠다.

http://blog.daum.net/sun_rus/495

 

이 그림이 이애하기가 쉽다.

*보통 ATX 파워 검색하면 클립같은것을 파워측  PS_ON과 검은색 GND 아무데나 연결하면 파워가 보드에 연결하지 않아도 켜지것은 기본으로 알아야 한다.(?)


정리하고자 하는 내용은 OS상의 부팅 순서(절차)가 아니고 보드자체의 전원공급 절차를 알아보고자 한다.

Global System States

G0 - Global Working State
G1 - Global Sleeping State
         S1 : No system context is lost
                 -> the STPCLK# signal goes active to the processor
                 ->CPU performs a Stop-Grant cycle
                 ->Cache coherency is maintained
        S2 : Cache contect is lost
               -> Not supported by ICH
       S3: Suspend Tp RAM (STR)
              -> System conext is maintained in system memory
              -> All clocks stop except TRC clock
             -> Power is shut oddto non-critical circuits.
                  Memory is retained, and refreshes of DRAM continues.
      S4 : Suspend To Disk (STD)
             -> System contect is maintained on the disk.
             -> All power is shut off, except for the circuits to restart.
             -> Extermally apears same as S5, but may have different wake events.

G2/S5 - Soft off
       S5 : soft off
              -> System conects is not maintained
             -> All power is shut off except for the circuits to restart.
             -> A full boot is required when waking.
G3 - Mechanical Off
            -> All power is shut off except for RTC
            -> No wake events are possible.

RSMRST# : Wake-up logic for the reset ICH
SLP_S3/S4/S5#:Power Control signal, Used to sleep shut down the power
VCC : The power of each group
VRMPWRGGD : VRM power ok, CPU voltage is normal.


1. PWRBTN
2.IO_PWRBTN
3.SLP_S3
4.SLP_S4
5.PSON
6.PWROK_PS
7.IO_PWROK
8.VRMPWRGD
9.PCI_RST
10.S_PLTRST
11.IDE_RST/PCIRST_PCIEX 16/1
12. CPUPWRGD
13. CURST



........공부중.........