Power Planes; Power And Ground Planes - Intel EP80579 Manual

Table 9. Power Supply Pins (Sheet 2 of 2)
Well
Suspend
RTC
GND
GND
6.3

Power Planes

Table 10 summarizes the Development Board power supply interconnect to the
EP80579 power pins.
Table 10. Power and Ground Planes (Sheet 1 of 2)
Development
Board
Signal Name
IA-32 core Power Supply Pins
VCC_CPU
VCCA[2:1]
Core Logic Power Supply Pins
V1P2
VCC3
VCC
V2P5
DDR2 Unit Power Supply Pins
V1P8_DDR
DDR2_VTT
Suspend/Resume Power Supply Pins
VSBY1_2
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Intel EP80579 Integrated Processor Product Line
Platform Design Guide
66
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Intel EP80579 Integrated Processor Product Line—System Power Delivery Guide
Development EP80579
Board Power Pin
Voltage Rail Name
VCC1P2_USBSUS
1.2V
VCCSUS1
2.5V VCCSUS25
VCCPSUS
3.3V
VCCGBEPSUS
5V VCC50_SUS
3.3V VCCPRTC
Analog Ground VSSA
Ground VSS
EP80579
Power Pin Name
VCCVC
VCCA[2:1]
VCC
VCC33
VCC50
VCC25
VCC18
VTTDDR
VCCSUS1
VCC1P2_USBSUS
Supply Types
USB2
IMCH_PAD
GbE
USB2, IMCH
GbE
N/A
IMCH
Ground
Ground
Description
Power Supply (1.0V - 1.3V) for IA-32 core
• 1.0V when operating at 600 MHz
• 1.3V when operating at 1.066 GHz
• 1.3V when operating at 1.2 GHz
1.2V CPU core PLL Analog Voltage
1.2V supply pins for core logic (CRU, EXP_Bus, GbE, IICH,
IMCH, SATA, PCI Express)
3.3V supply for all 3.3V I/O functions which are not dedicated
to their own power rail. The units using this rail include:
IMCH, Global Clock/Reset(CRU), USB, CAN, EXP_Bus, SATA,
and GbE.
5V power supply for 5V tolerance units. (IICH, CRU, CAN, and
EXP_Bus
2.5V supply for GbE unit.
1.8V power supply for DDR2 I/O
0.9V DDR2 Reference Voltage (Vref)
1.2V power pins for the resume well GbE, USB, and IICH core
logic. This power is not expected to be shut off unless the
system is unplugged.
Description
1.2V USB sustain power
RTC core sustain power
Sustain GbE power
USB sustain power, RTC IO
sustain power
Sustain 3.3V tolerance
reference
N/A
Real Time Clock power
Analog Ground
Ground
May 2010
Order Number: 320068-005US