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HP OmniBook XE2 Product Information 1-13
Table 1-10. Functional Structure
Bootup CPU module
Motherboard
BIOS IC
Floppy disk module
Hard disk drive
Main processor (MMO).
Primary system circuitry.
Code for basic system functions.
First source of disk-based startup code.
Second source of disk-based startup code.
Processor CPU module
Motherboard
Main processor, numeric data processor, L1 and L2 cache.
Primary system circuitry.
Memory RAM board Optional, additional RAM.
Power Battery
Motherboard
AC adapter
Power storage.
AC adapter socket, power switch, lid switch, system-off switch, power
supply.
AC-to-DC converter.
Display Motherboard
LCD module
Inverter PCA
PCMCIA/zoomed video controller.
Display output, backlight.
Power converter for backlight.
Hard disk
drive
Motherboard
Hard disk drive
Hard disk controller.
Hard disk mechanism.
Floppy disk
drive
Motherboard
Floppy disk module
Floppy disk controller.
Floppy disk mechanism.
Keyboard Motherboard
BIOS IC
Keyboard
Keyboard controller.
Keyboard BIOS.
Key switches.
Pointer Motherboard
Touch pad
Keyboard controller.
Touch pad sensor, controller (PS/2 output).
Audio Motherboard
LED PCA
Speakers
Audio controller, speaker amplifier, headphone amplifier, zoomed video
controller, mute switch.
External audio jacks.
Speakers.
Status Motherboard
LED PCA
Keyboard controller.
Power LEDs.
Serial Motherboard
Modem PCA
I/O controller.
Serial connector.
Parallel Motherboard
Modem PCA
I/O controller
Parallel connector.
Infrared Motherboard
LED PCA
I/O controller.
Infrared transmitter/receiver.
PS/2 port Motherboard
LED PCA
Keyboard controller, PS/2 processor
PS/2 connector.
USB Motherboard
LED PCA
Bus controller (South Bridge)
USB connector.
Docking port Motherboard Docking logic, docking connector.
PCMCIA Motherboard
PCMCIA socket
PCMCIA controller.
PCMCIA connectors.