Intel 317443-001US User Manual

Page of 57
Intel
®
 945GME Express Chipset—Theory of Operation
Intel
®
 Core
TM
 2 Duo processor with the Mobile Intel
®
 945GME Express Chipset
Manual
May 2007
32
 
Order Number: 317443-001US
R is the value of the sense resistor (typically 0.002 Ω)
V is the voltage measured across the sense resistor.
It is recommended that the user use an oscilloscope or high precision digital multi-
meter tool such as the Agilent* 34401A digital multi-meter. Such a meter has 6½ digits 
of accuracy and can provide a much greater accuracy in power measurement than a 
common 3½ digit multimeter.
 summarizes the voltage rails and power measurement sense resistors located 
on the Intel
®
 945GME Express Chipset platform. All sense resistors are 0.002 Ω unless 
otherwise noted. Please note that many voltage rails do not have sense resistors.
Table 6.
Intel
®
 945GME Express Chipset Development Kit Voltage Rails (Sheet 1 of 3)
Voltage Groups
Voltage Rail
Sense Resistor
Powered during 
System States
0.9V
+V0.9
R4N4
S0,S3
1.05V Switched
+V1.05S
R4V4
S0
1.2V
+V1.2_LAN
R8A2
S0,S3
1.5V Always
+V1.5A_AZ_IO
S0,S3,S4,S5
+V1.5A_PWRGD
S0,S3,S4,S5
1.5V Switched
+V1.5S
R5F4
S0
+V1.5S_3GPLL
R6D8
S0
+V1.5S_AUX
R6D6
S0
+V1.5S_DPLLA
S0
+V1.5S_DPLLB
S0
+V1.5S_HPLL
S0
+V1.5S_MPLL
S0
+V1.5S_PCIE
R5E2
S0
+V1.5S_PCIE_ICH
S0
+V1.5S_QTVDAC and 
+V1.5S_TVDAC
R5F3
S0
1.8V
+V1.8
R5N2
S0,S3
2.5V
+V2.5_LAN
R7M2
S0,S3
+VLAN_2.5-3.3
S0,S3
2.5V Switched
+V2.5S
S0
+V2.5S_CRTDAC
S0
+V2.5S_PWRGD
S0
3.3V
+V3.3
S0,S3
3.3V Always
+V3.3A
S0,S3,S4,S5
+V3.3A/1.5A_AZ_IO
S0,S3,S4,S5
+V3.3A_MBL
S0,S3,S4,S5
+V3.3A_RTC
S0,S3,S4,S5
3.3V Switched
+V3.3S
S0
+V3.3_PCISLT3
R9B3
S0
+V3.3S/1.5S_AZ_IO
R8F8
S0
+V3.3S_DB800_VDDA
S0