Acer TravelMate 6492 Service Guide - Page 52

Keyboard controller Part name: iTE IT8152 Package: QFP 128-pin Features: • 8032 Embedded Controller • LPC Bus Interface • PS/2 interface for touchpad • Flash Interface • SM Bus Controller • System Wake Up Control / Ec Wake Up Control • Interrupt Controller • ACPI PowerManagement Channel • PWM With Smart Auto Fan Control Supply current: Standby With Sleep Mode Current: 100uA Speaker Model: YYD2112G Impedance: 4 Ohm ± 15% on 2100Hz Rated input: 2 W Lowest resonance frequency: 850Hz ± 20% Output sound pressure level: 78db ± 3 dB at 1.0W Dimension: TBD Weight: TBD SYSTEM LED Indicator System LED Indicator The following information provide the LED icon for TravelMate 6492 system. • Battery LED • Power/Suspend LED • Wireless LED • Bluetooth LED POWER SPECIFICATION System Power States ZR3 supports 6 different power states in the system. The SB460 automatically controls the signals required to transition the system between the various power states and also informs the PC97551 to control the power planes as required. The following table describes the different power states switching matrix: Current State Initial ON(S0) Standby(S1) Suspend(S3) Initial Next State ON Standby Suspend Hibernate Soft Off (1) (2) (3) (4) (5) (6) (7) 42 Chapter 1