Prestigio VISCONTE 120 Technical & Service Manual page 19

TECHNICAL SERVICE MANUAL
INPUT :
Input voltage range :
20V @ 3.25A,65W constant voltage mode .
Adapter:
Battery: Main Battery: 4 Cells (4S1P) DC 14.8V 2200mA
Second Battery: 3 Cells(3S1P) DC 11.1V(Option) 2200mA
2.6.1 General Requirement
The purpose of the Power Management (PM) is trying to reduce the power consumption of the system and extent the
battery life, increase the time without recharging the battery. The Advanced Configuration and Power Interface (ACPI)
specification is the latest and better PM method and will replace the traditional APM and PNP functions. ACPI is a kind of
Operating System Directed Power Management (OSPM), that is, the OS will control the system/devices to enter proper
power-saving mode and determine when to do it.
The BIOS shall provide the ACPI table that is written by ASL language, to tell the OS how to setup and control the
system/device configuration and the power-saving mode. So the system H/W, BIOS and drivers must be meet the ACPI
specification:
ACPI 1.0b compliant
Intel Geyserville III Technology Support
Supporting processor power state C0, C1 , C2 ,C3
Supporting system state S0, S3, S4 (WinXP) and S5
Support Uniwill Smart Power Function
First of all, the next section will depict the power management state transition, then describe the definition for each
system state.
2.6.2 Power Management State Transition
9V~17Vdc (Battery) or 18V~21.5Vdc (Adaptor).
3 Cells(3S2P) DC 11.1V 2200mA/2000mA
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