Intel
®
EP80579 Integrated Processor Product Line—System Power Delivery Guide
Intel
®
EP80579 Integrated Processor Product Line
Platform Design Guide May 2010
68 Order Number: 320068-005US
Figure 39. Development Board Power Delivery Implementation
Note: The Development Board power delivery configuration shown is only an example. Many power distribution methods
achieve similar results. It is critical, when deviating from these examples in any way, to consider the effects of the
change. See Table 11 for Voltage Definitions.
1.0 – 1.3 V
VCC-CPU
1.0V
V1P0
0.9V
DDR2_VTT
1.2V
V1P2
1.8V
V1P8
2.5V
V2P5
Switching Regulator (SW)
Linear Regulator (LR)
Power Generators:
1.0V
P1V0_AUX
5.0V
P5_AUX
2.0V
P2V5_AUX
3.3V
VSBY3_3
1.2V
VSBY1_2
2.5V
VSBY2_5
1.0V
VSBY1_0
3.3V
P3V3_AUX
EP80579 Development Board Power Delivery Block Diagram
1.8V
V1P8_DDR
1.8V
VSBY1_8
400W ATX
-12VPC
1A
5.0V
VCC
50A
+12VPC
16A
3.3V
VCC3
28A
5.0V
VSBY5
2.A
VCC (1.2V) Core Logic:
CRU, CRU_PAD, DDR, Exp Bus,
GbE, IMCH_PAD, MISC I/O, PCI-E,
SATA, USB, IMCH, IICH
VCCPRTC (3.3V) Battery
VSBY3_3 (3.3V): 3.3V I/O Sustain
VCCPSUS (USB, IMCH)
VCCGBEPSUS (GbE)
VCC33 (3.3V) 3.3V Core Logic
VCC33[Core Logic] Peripheral Units:
IMCH, TDM, CAN, EXP_Bus,
SATA, USB, GbE
DDR Power Supply:
VCC18 (1.8V) – DDR2 Logic
VTTDDR (0.9V) – DDR2 Vref.
VSBY1_2 (1.2V): Core Logic Sustain
VCCSUS1(IMCH);
VCC1P2_USBSUS(USB)
EP80579
VSBY2_5 (2.5V): 2.5V I/O Sustain
VCCSUS25 (GbE)
IA-32 core Power Suppy:
VCCVC (1.0) V @ 600 MHz core
VCCVC (1.3) V @ 1.066 GHz core
VCCVC (1.3) V @ 1.2 GHz core
RTC
Battery
VCCPRTC
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