Chapter 2 System Overview
Compaq iPAQ Series of Desktop Personal Computers
Second Edition – February 2001
2-12
2.4.2 IPAQ 2.0 ARCHITECTURE
The iPAQ 2.0 models feature an architecture based on the Intel 815E chipset with a 700-MHz
Celeron or 866-MHz Pentium III processor installed (Figure 2-9).
The 815E chipset includes the 82815 GMCH designed to control up to 512 megabytes of 133-
MHz (PC133) SDRAM and also integrates a 2D/3D Direct AGP graphics controller. Pentium III-
based systems come with a 4-MB display cache module installed to compliment the graphics
controller. Celeron-based systems may be upgraded by adding the 4-MB display cache module.
The 815E chipset also includes an 82801BA I/O Controller Hub (ICH2) that provides two IDE
controllers providing UATA/100 support, two USB controllers, a network interface controller, and
a PCI bus controller.
All iPAQ 2.0 systems provide six USB ports. Two USB ports are configured as direct ports, with
one direct port dedicated to a USB controller for maximum throughput operation. Four ports are
configured as “through-hub” ports.
An LPC47B357 I/O controller is embedded on the system board of all iPAQ 2.0 systems.
Functions supported by the I/O controller (serial, parallel, mouse and keyboard I/Fs) are available
when the legacy module is attached to the system, making it a legacy system. A legacy-free iPAQ
2.0 system may easily be converted to a legacy system by installing the legacy module, which
snaps into place at the rear of the unit.
NOTE: Legacy-free models ship with USB keyboards and USB mouse devices. Legacy
models (shipped with the legacy module installed) include PS/2 keyboards and mouse
devices.
The Firmware Hub (FWH) component (82802 or equivalent) is loaded with Compaq BIOS.
The iPAQ 2.0 features an AC’97 audio subsystem with 8-watt amplifier and internal speaker. The
audio system includes microphone and line inputs and headphone and line outputs.
All iPAQ 2.0 systems feature a 110-watt power supply.
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