Intel Pentium 4 Processor in the 478-pin Package / Intel 850 Chipset Platform Family Design Guide

Platform Placement and Stack-Up Overview

Intel

Pentium

4 Processor / Intel

850 Chipset Family Platform Design Guide 31

3 Platform Placement and Stack-Up

Overview

In this section, examples of Intel 850 chipset platform component placement and stack-up are

described for desktop systems in 6-layer ATX and 4-layer µATX motherboard form factors.

3.1 Platform Component Placement

3.1.1 Six-Layer Motherboard

Figure 5 shows general component placement for a Pentium 4 processor in the 478-pin package

and Intel 850 chipset-based desktop 6-layer motherboard system. The assumptions used for the

component placement are described in Table 3 and are consistent with the 6-layer customer

reference board (CRB) schematics.

Note: The processor supports uni-processor configurations only.

Table 3. Placement Assumptions for the Desktop Configuration (6-Layer Motherboard)

Assumptions

System

Configuration

Form Factor Number of

Layers for

Routing

Assembly

Uni-processor ATX 6 layers Single sided