Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 65
System Power Delivery Guide—Intel
®
EP80579 Integrated Processor Product Line
6.2 Power Supply
Power planes or shapes should be used for the major voltages shown in this section.
The functional blocks are powered by the voltages shown in Table 9.
Note: The EP80579 is a large chip and may have interfaces that are not located near each
other, although they are powered by the same voltage.
These voltages are not necessarily connected in the package or on the silicon. Their
source voltage may be the same voltage plane on the baseboard, but they need to be
considered separate for decoupling purposes on the board. The decoupling needs are
presented based on these functional blocks.
Table 9. Power Supply Pins (Sheet 1 of 2)
Well
Development
Board
Voltage Rail
EP80579
Power Pin
Name
Supply Types Description
Core
1.0V or 1.3V VCCVC IA-32 core VC power
1.2V
VCCA[1] IA-32 core VC PLL1 power
VCCA[2] IA-32 core VC PLL2 power
1.2V
VCC
CRU, DDR2, Expansion
Bus, GbE, IMCH, IICH, PCI
Express, SATA
Core logic power
VCCUSB12 USB2 Digital power
VCCAUSB12 USB2 Analog power
VCCAPE0PLL12 PCI Express PLL digital power
VCCAPE PCI Express Transmitter analog power
VCCRPE PCI Express Receiver digital power
VCCAPLL SATA Analog PLL power
VCCARX SATA Analog receiver power
VCCATX SATA Analog transmitter power
VCCSATA SATA SATA power
VCCAHPLL CRU Analog PLL power
0.9V
(DDR2)
VTTDDR DDR2 DDR2 reference
1.8V
(DDR2)
VCC18 DDR2 DDR2 IO power
VCCTMP18 Thermal Sensor Thermal sensor power
2.5V VCC25 GbE GbE IO
3.3V
VCC33
CRU, Expansion Bus, IMCH,
IICH, MISC IO
I/O power
VCCGBE33 GbE 3.3V tolerance reference
VCCSATA33 SATA SATA power
VCCABGP033 PCI-Express Analog bandgap power
VCCABG3P3_USB USB2 Analog bandgap power
VCCASATABG3P3 SATA Analog bandgap power
5V VCC50 N/A N/A

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English