Intel 440GX User Manual

Page 26

Motherboard Layout and Routing Guidelines

2-2

Intel

440GX AGPset Design Guide

Figure 2-2

and

Figure 2-3

show the proposed component placement for a single processor for both

ATX and NLX form factor designs.

ATX Form Factor:

1. The ATX placement and layout below is recommended for single (UP) Intel

Pentium

processor / Intel

440GX AGPset system design.

2. The example placement below shows 4 PCI slots, 2 ISA slots, 4 DIMM sockets, and one AGP

connector.

3. For an ATX form factor design, the AGP compliant graphics device can be either on the

motherboard (device down option), or on an AGP connector (up option).

4. The trace length limitation between critical connections will be addressed later in this

document.

5. The figure below is for reference only and the trade-off between the number of PCI and ISA

slots, number of DIMM socket, and other motherboard peripherals need to be evaluated for
each design.

Figure 2-2. Example ATX Placement for a UP Pentium

processor/Intel

440GX AGPset

Design

82443GX

PIIX4E

I/O Ports

Pentium

Slot 1

IDE 0/1

S D R A M D I M M s

PCI0

AGP/PCI1

CKBF

CK100

v 0 0 2

AGP Interface

PCI Interface

SDRAM Interface

Host Interface