Acer M3900 Power Management FunctionACPI support function, Device Standby Mode, Suspend Mode

Power Management Function(ACPI support function)

Device Standby Mode

•Independent power management timer for hard disk drive devices(0-15 minutes,time step=1minute).

•Hard Disk drive goes into Standby mode(for ATA standard interface).

•Disable V-sync to control the VESA DPMS monitor.

•Resume method:device activated (keyboard for DOS, keyboard &mouse for Windows.

•Resume recovery time 3-5sec

Global Standby Mode

•Global power management timer(2-120minutes,time step=10minute).

•Hard disk drive goes into Standby mode(for ATA standard interface).

•Disable H-sync and V-sync signals to control the VESA DPMS monitor.

•Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard an mouse for APM mode.

•Resume recovery time :7-10sec

Suspend Mode

•Independent power management timer(2-120minutes,time step=10minute)or pushing extern switch button.

•CPU goes into SMM

•CPU asserts STPCLK# and goes into the Stop Grant State.

•LED on panel turns amber colour.

•Hard disk drive goes into SLEEP mode (for ATA standard interface).

•Disable H-sync and V-sync signals to control the VESA DPMS monitor.

•Ultra I/O and VGA chip go into power saving mode.

•Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard an mouse for APM mode

•Return to original state by pushing external switch button,modem ring in and USB keyboard for ACPI mode.

ACPI

•ACPI specification 1.0b

•S0,S1,S2 and S5 sleep state support.

•On board device power management support.

•On board device configuration support.

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