Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 79
System Power Delivery Guide—Intel
®
EP80579 Integrated Processor Product Line
6.6.5 Analog and Bandgap Filter Layout Guidelines
General board layout guidelines for the Analog filters are as follows:
• Ensure each listed supply has its own filter. Do not share filters between supplies.
• These supplies must have a via directly from the supply plane.
• The filter must be placed as close as possible to the EP80579.
• For filters that call out a distinct VSS, place the 0.1 uF capacitor as close as possible
to the filters power and ground pins, even though they are connected to the VSS
ground plane.
• Analog traces must be ground referenced.
• Minimum trace width of the analog signals is 12 mils.
• Minimum space to other signals is 20 mils
6.6.6 Analog and Bandgap Filter Frequency Response
The filters need to fall within the acceptable zone of the analog filter frequency
response shown in Figure 48:
Table 13. Analog and Bandgap Filter Components
Component Value
Analog Filter Components
VCCARX, VCCATX, VCCAHPLL, VCCAUSB12,
VCCAPLL, VCCAPE0PLL12
VCC V1P2 (1.2V)
R0 Ω
L
1
4.7 µH
C1 0.1 µF
C2 10 µF
Bandgap Filter Components
VCCSATABG3P3, VCCABG3P3_USB, VCCABGP033
VCC VCC3 (3.3V)
R1 Ω
L
1
4.7 µH
C1 0.1 µF
C2 10 µF
Note:
1. For the 4.7 uH filter inductors, select inductors
with maximum internal resistance of 0.2 ohm
and a current rating of 120mA (min). See
Table 14 for filter current rating requirements

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English