Acer Aspire T320 Aspire T320 Service Guide - Page 23

Power Management Function (ACPI support function) Device Standby Mode T Independent power management timer for hard disk drive devices (0-15 minutes, time step=1 minute). T Hard disk drive goes into Standby mode (for ATA standard interface). T Disable V-sync to control the VESA DPMS monitor. T Resume method: device activated (Keyboard for DOS, keyboard & mouse for Windows). T Resume recovery time: 3-5 sec. Global Standby Mode T Global power management timer (2-120 minutes, time step=10 minute). T Hard disk drive goes into Standby mode (for ATA standard interface). T Disable H-sync and V-sync signals to control the VESA DPMS monitor. T Resume method: Return to original state by pushing external switch button, modem ring in, keyboard and mouse for APM mode. T Resume recovery time: 7-10 sec. Suspend Mode T Independent power management timer (2-120 minutes, time step=10 minutes) or pushing external switch button. T CPU goes into SMM. T CPU asserts STPCLK# and goes into the Stop Grant State. T LED on the panel turns amber colour. T Hard disk drive goes into SLEEP mode (for ATA standard interface). T Disable H-sync and V-sync signals to control the VESA DPMS monitor. T Ultra I/O and VGA chip go into power saving mode. T Resume method: Return to original state by pushing external switch button, modem ring in, keyboard and mouse for APM mode. T Return to original state by pushing external switch button, modem ring in and USB keyboard for ACPI mode. ACPI T ACPI specification 1.0b. T S0, S1, S3 and S5 sleep state support. T On board device power management support. T On board device configuration support. 16 Chapter 1