Intel 440GX, Design Manual

Page: 36 / 118

Motherboard Layout and Routing Guidelines
2-12 Intel
®
440GX AGPset Design Guide
2.3.8 Performance Requirements
Prior to performing interconnect simulations, establish the minimum and maximum flight time
requirements. Setup and hold requirements determine the flight time bounds for the host bus. The
system contains multiple paths which must be considered:
•
Intel
®
Pentium
®
II processor driving an AGPset component
•
AGPset component driving a Intel
®
Pentium
®
II processor
•
Intel
®
Pentium
®
II processor driving a Intel
®
Pentium
®
II processor
(dual processor systems only)
Figure 2-12. GTL+ Design Process
Establish System
Performance
Requirements
(Timing Analysis)
Define Topologies
Perform Pre-Layout
Simulations
(Sensitivity Analysis)
Define Routing Rules
Place & Route Board
Perform Post-Layout
Simulations
(Verification)
Meet
Requirements?
Validate Design
Yes
No