Intel 740 User Manual

Intel740™ Graphics Accelerator Design Guide 3-9
3 Device AGP MotherBoard Design
3.1.6 Design Recommendations
3.1.6.1 Voltage Definitions
For the purposes of this document the following nominal voltage definitions are used:
Vcc 5.0V
Vcc
3.3
3.3V
Vcc
CORE
Voltage is dependent on the five bit VID setting
Vcc
2.5
2.5V
V
TT
1.5V
V
REF
1.0V
AGPV
REF
3.3V
+2_7 2.7V
VDDQ3 3.3V
3.1.6.2 General Design Recommendation
For general design recommendations, refer to the Intel 440BX AGPset Design Guide sections 1.4.2
and 1.4.3.
3.2 3 Device AGP Motherboard Layout and Routing
Guidelines
This section describes layout and routing recommendations to insure a robust design. Follow these
guidelines as closely as possible. Any deviations from the guidelines listed should be simulated to
insure adequate margin is still maintained in the design. Since the concentration of this section is
mainly 3 Device AGP implementation, refer to the Intel 440BX AGPset Design Guide for the
remaining design guidelines. It would be beneficial to have that design guide before tying to read
this section. Sections that are referred to the Intel 440BX AGPset Design Guide are:
•
Routing Guidelines
— GTL+ Description
— GTL+ Layout Recommendations
— Single Processor Design
— Additional Guidelines
— Design Methodology
— Performance Requirements
— Topology Definition
— Pre-Layout Simulation (Sensitivity Analysis)
— Placement & Layout
•
Placement & Layout
•
Post-Layout Simulation
•
Validation
— Flight Time Measurement
— Signal Quality Measurement

Intel 740 Specifications

General

Brand	Intel
Model	740
Category	Video Card
Language	English