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

Brand	Intel
Model	Pentium 4
Category	Computer Hardware
Language	English