Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 67
System Power Delivery Guide—Intel
®
EP80579 Integrated Processor Product Line
6.4 Power Requirements
This section describes the power requirements for the EP80579. Figure 39 shows a
block diagram of the power delivery implementation on the Development Board.
Table 11 provides the definitions for the voltages specified in Figure 39. Many other
power delivery methods can achieve similar results; however, it is critical to consider
the effects if deviating from the example shown below.
VSBY3_3
VCCPSUS
VCCGBEPSUS
3.3V power pins for the resume well USB, IICH and GbE I/O
buffers. This power is not expected to be shut off unless the
system is unplugged.
VSBY2_5 VCCSUS25
2.5V power for the resume well GbE core logic. This power is
not expected to be shut off unless the system is unplugged
VSBY5 VCC50_SUS
5.0V power for 5V tolerance in the sustain well I/Os. This
power is not expected to be shut off unless the system is
unplugged
Battery Power (RTC)
V_3P0_BAT-VREG VCCPRTC
3.3V Power Supply for the RTC Well. Voltage can drop to 2.0V
if all other planes are shut off. This power is not expected to
be shut off unless the RTC battery is removed or drained.
Analog Power Supply Pins (All Analog Power Pins should be filtered)
SATA Analog Voltages
VCCARX VCCARX 1.2V Analog Power for SATA AFE Receiver
VCCATX VCCATX 1.2V Analog Power for SATA AFE Transmitter
VCCSATABG3P3 VCCSATABG3P3 3.3V Bandgap Power for SATA AFE Reference Circuitry
VCCAPLL VCCAPLL
1.2V Analog Power for SATA PLL.
Note: This supply is required even if the SATA interface is
not used.
USB Analog Voltages
VCCABG3P3_USB VCCABG3P3_USB 3.3V Bandgap Power for USB AFE Reference Circuitry
USBVCC_1P2_APLL VCCAUSB12
1.2V Analog Power for USB PLL. This voltage is required even
if USB is not used.
PCI Express Analog Voltages
VCCABGP033 VCCABGP033 3.3V PCI Express Bandgap Power supply
VCCAPE0PLL12 VCCAPE0PLL12 1.2V Analog Power for PCI Express PLL.
CRU Analog Voltages
VCCAHPLL VCCAHPLL 1.2V Analog Power for CRU PLL
Table 10. Power and Ground Planes (Sheet 2 of 2)
Development
Board
Signal Name
EP80579
Power Pin Name
Description

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English