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42 Chapter 1
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
Next State
Initial ON Standby Suspend Hibernate Soft Off
Initial (1)
ON(S0) (2) (3) (4) (5)
Standby(S1) (6)
Suspend(S3) (7)