
Power Management
Intel
®
Atom™ Processor E660 with Intel
®
Platform Controller Hub EG20T Development Kit
User Manual
January 2012
32
Document Number: 324213-002
summarizes all the power measurement sense resistors located on the carrier
board. All sense resistors are 0.01
Ω
unless otherwise noted.
Table 9.
Digital Multi-Meter Comparison
Example System
Sense Resistor Value
0.01 Ohm
Voltage Difference Across Resistor
1.492 mV (149.2 mA)
Calculated Power
0.223 mW
Digital Multimeter
Agilent 34401A
(6
1/2
digit display)
Fluke 79
(3 digit display)
Specification
(+/- 0.0030% of reading) + (+/-
0.0030% of range)
0.09% +/- 2 digits
Min voltage displayed Calculated
power
1.49193 mV
0.22258 mW
1.47 mV
0.216 m
Max voltage displayed Calculated
power
1.49206 mV
0.22624 mW
1.51 mV
0.228 mW
Error in power
+/- 0.009%
+/- 0.3%
Note:
The precision achieved by using a high precision digital multi-meter versus a normal digital multi-
meter is ~33 times more accurate.
Table 10.
Carrier Board Voltage Rails (Sheet 1 of 3)
Schem
Page
Target Component
Voltage
Supply
Power Rail
Rail
Ref Des
Resistor
Spec
13
PCIe* Slot #2
12V
D120Vslot
D120VSlot_PCIE_SLOT2
R35
Resistor-2
13
PCIe* Slot #2
3.3V
D33VSlot
D33VSlot_PCIE_SLOT2
R37
Resistor-2
13
PCIe* Slot #2
3.3V
D33V
D33V_PCIE_SLOT2
R38
Resistor-1
13
PCIe* mini Card
1.5V
D15VS
D15VS_EXCD_MINI
R40
Resistor-1
13
PCIe* mini Card
3.3V
D33V
D33V_EXCD_MINI
R42
Resistor-1
14
PEG Slot #1 SDVO
12V
D120VSlot
D120VSlot_SDVO
R48
Resistor-2
14
PEG Slot #1 SDVO
3.3V
D33VSlot
D33VSlot_SDVO
R49
Resistor-2
15
PCIe* Slot #3
12V
D120VSlot
D120VSlot_PCIE_SLOT3
R391
Resistor-2
15
PCIe* Slot #3
3.3V
D33VSlot
D33VSlot_PCIE_SLOT3
R392
Resistor-2
15
PCIe* Slot #3
3.3V
D33V
D33V_PCIE_SLOT3
R390
Resistor-1
19
LVDS
12V
D120VS
D12VS(1pin: VDD_BLI)
R269
Resistor-1
19
LVDS
5.0V
D50VS
D50VS(4pin: VDD_DBC)
R270
Resistor-1
19
LVDS
3.3V
D33VS
D33VS(18pin: VDD_VCL)
R274
Resistor-1
19
LVDS
3.3V
D33VS
D33VS_LVDS_VDDVDL
(16,17pin: VDD_VDL1,2)
R275
Resistor-1
22
SATA_HDD
5.0V
D50VS_HDD
D50VS for HDD_POW
R405
Resistor-2
23
SD Slot 1(X5)
3.3V
D33VS
D33VS_SD_SLOT0
R299
Resistor-1
23
SD Slot 2(X6)
3.3V
D33VS
D33_VS_SD_SLOT1
R395
Resistor-1
26
Hiside SW for
D50V_D50VS_USB_Port2,3
5.0V
D50V_D50VS
_USB2_5
Hiside SW Pow for
D50V_D50VS_USB_Port2,
3
R151
Resistor-1