Intel Pentium 4 User Manual

System Bus Routing
R
66 Intel
®
Pentium
®
4 Processor / Intel
®
850 Chipset Family Platform Design Guide
Common Clock
Common clock signals should be routed to a minimum pin to pin motherboard length of 6 inches
and a maximum motherboard length of 10 inches.
Figure 33. Processor Topology
850 MCH Processor
Length L1
Package trace
Motherboard PCB trace
Pad Pad
5.3.1.2 Design Considerations
Intel has found that the following recommendations aid in the routing of the processor, given the
example stack-up shown in Figure 9.
• Line width is 7.0 mil.
• Trace to trace spacing is 13.0 mil (except in component breakout where spacing is
constrained where 5 mil spacing is acceptable)
Table 12. Processor Package Lengths
Net Name Intel
®
Pentium
®
4 Processor in
478-pin Package Length (inches)
Intel
®
Pentium
®
4 Processor with
512-KB L2 Cache on 0.13 Micron
Process Package Length (inches)
Address Group 0
ADSTB#[0] 0.201 0.219
A#[03] 0.344 0.393
A#[04] 0.249 0.281
A#[05] 0.139 0.170
A#[06] 0.394 0.436
A#[07] 0.279 0.330
A#[08] 0.130 0.157
A#[09] 0.369 0.374
A#[10] 0.323 0.330
A#[11] 0.230 0.261
A#[12] 0.382 0.407
A#[13] 0.396 0.420
A#[14] 0.335 0.362

Intel Pentium 4 Specifications

General

Architecture	x86
Core Count	1
Microarchitecture	NetBurst
Manufacturer	Intel
Core Names	Willamette, Northwood, Prescott, Cedar Mill
Virtualization Technology	No
Release Date	November 20, 2000
Clock Speed	1.3 GHz to 3.8 GHz
FSB Speed	400 MHz to 1066 MHz
Socket	Socket 423, Socket 478, LGA 775
Introduced	2000
Product Line	Pentium
Front Side Bus	400 MHz to 1066 MHz
Hyper-Threading	Yes (Prescott and later)
64-bit Support	Yes (Prescott and later)
Instruction Set	MMX, SSE, SSE2, SSE3
Discontinued	2008
Process Technology	180 nm, 130 nm, 90 nm, 65 nm
L2 Cache	256 KB, 512 KB, 1 MB, 2 MB
Lithography	180 nm, 130 nm, 90 nm, 65 nm
L1 Cache	8 KB