Power Management Function(ACPI support function)
Device Standby Mode
Independent power management timer for hard disk drive devices(0-15 minutes,time step=1minute).
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Hard Disk drive goes into Standby mode(for ATA standard interface).
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Disable V-sync to control the VESA DPMS monitor.
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Resume method:device activated (keyboard for DOS, keyboard &mouse for Windows.
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Resume recovery time 3-5sec
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Global Standby Mode
Global power management timer(2-120minutes,time step=10minute).
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Hard disk drive goes into Standby mode(for ATA standard interface).
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Disable H-sync and V-sync signals to control the VESA DPMS monitor.
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Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard
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an mouse for APM mode.
Resume recovery time :7-10sec
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Suspend Mode
Independent power management timer(2-120minutes,time step=10minute)or pushing extern switch
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button.
CPU goes into SMM
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CPU asserts STPCLK# and goes into the Stop Grant State.
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LED on panel turns amber colour.
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Hard disk drive goes into SLEEP mode (for ATA standard interface).
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Disable H-sync and V-sync signals to control the VESA DPMS monitor.
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Ultra I/O and VGA chip go into power saving mode.
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Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard
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an mouse for APM mode
Return to original state by pushing external switch button,modem ring in and USB keyboard for ACPI
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mode.
ACPI
ACPI specification 1.0b
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S0,S1,S2 and S5 sleep state support.
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On board device power management support.
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On board device configuration support.
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10
Chapter 1