Intel Pentium 4 User Manual

Platform Clock Routing Guidelines
R
56 Intel
®
Pentium
®
4 Processor / Intel
®
850 Chipset Family Platform Design Guide
4.4 Routing Guidelines for 66 MHz and 33 MHz Clocks
4.4.1 66 MHz / 33 MHz Clock Relationships
Figure 27 below shows the clock routing relationships between the 66 MHz clocks and the
33 MHz clocks. The routing guidelines and the topologies for these clocks are also documented.
Figure 27. 66 MHz / 33 MHz Clock Relationships
Z
Z +
Z +
Z +
AGP_66 to
AGP Slot
CLK_66 to ICH2,
MCH
PCI_33 to PCI
Slots
CLK_33 to ICH2,
FWH,
SIO
4.0" - 5.0"
2.0" - 4.0"
4.0" - 6.0"
Clk_relationship_66-33
Table 8 summarizes the layout recommendations between the CK00 clock synthesizer and the
AGP connector, MCH and ICH2 components, which require a 66 MHz clock.

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