Function

Bootup

Processor

Memory

Power

Display

Hard disk

Floppy drive

Keyboard

Touch pad

Audio

Serial

Parallel

Infrared

PS/2 port

USB

Docking port

PCMCIA

Modules

CPU module Motherboard System BIOS IC** Keyboard BIOS IC** Floppy disk drive Hard disk drive

CPU module

Motherboard

Motherboard

RAM boards

Battery

Motherboard

AC adapter

Icon PCA

Motherboard

LCD module

LVDS PCA*

Inverter PCA

Motherboard

Hard disk drive

Motherboard Floppy disk drive

Motherboard

Keyboard BIOS IC**

Keyboard

Motherboard

Top case

Motherboard

Audio PCA

Top case

Motherboard

Motherboard

Motherboard

IR PCA

Icon PCA

Motherboard

Motherboard

USB PCA

Motherboard

Motherboard

Table 1-13. Functional Structure

Roles

Main processor (MMO).

Primary system circuitry.

Code for basic system functions.

Code for keyboard functions.

First source of disk-based startup code.

Second source of disk-based startup code.

Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry.

First 16 MB (OmniBook 3000) or 32 MB (OmniBook 2100/3100) of RAM, video RAM.

Optional, additional RAM.

Power storage.

Power supply, ac adapter socket, system-off switch. AC-to-dc converter.

Power switch, lid switch.

Display/graphics controller, video RAM. Display output, backlight.

Display drivers, signal processing. (Low-voltage differential signaling) Power converter for backlight.

Hard disk controller.

Hard disk mechanism.

Floppy disk controller.

Floppy disk mechanism.

Keyboard controller.

Keyboard BIOS.

Key switches.

Keyboard and PS/2 controller.

Touch pad PS/2 device.

Speaker amplifier, external audio jacks.

Audio controller, wave synthesizer, headphone amplifier. Microphone, speakers.

I/O controller, serial connector.

I/O controller, parallel connector.

I/O controller.

Infrared transmitter/receiver.

Pass-through connection.

Keyboard and PS/2 controller, PS/2 connector.

I/O controller.

USB power controller, USB connector.

Docking logic, docking connector.

PCMCIA controller, PCMCIA connectors.

*The LVDS PCA is not present in products with 12-inch displays. In these products, the LVDS functions are performed by the LCD module.

**The BIOS IC on the OmniBook 2100/3100 performs both system and keyboard BIOS functions.

HP OmniBook 2100/3000/3100

Product Information 1-15