Intel 852GM Design Manual page 314

A
20..23,27,36,37,42,44 +V5
C3G7 C3G8 C3G10
150uF 150uF 0.1UF
4
VSENSE_1
COMP_1
C3G5
47pF
C3V2
R3V4
COMP_1_D
1 2 1 2
25.5k_1% 5600pF
R3U3 RT_1
NO_STUFF_10K_1%
SS/ENA_1
J3G2
R3F22
CON3_HDR C3G1
R4G1 5.49k_1%
V2.5_DDR_D 0.01UF
1 2
NO_STUFF_10K
R3V1 10K_1%
VSENSE_1_D
1 2
R3V2 221_1% C3V1
8200pF
1
R3V3
5.49k_1%
3 2
GND_DDR
R3G5 0
15,18..20,23,27,30,32,35,37..39,44 +V3.3
R3G8
10K
20..23,27,36,37,42,44 +V5
2
C3H2 C3H3 C3H4
R3W2
150uF 150uF 0.1UF
24
23
22
NO_STUFF_0 21
20
VSENSE_2
2
COMP_2
C3G13 3
220PF
4
R3W1 C3V5
COMP_2_D BOOT_2
5
4.99k_1% 0.082uF RT_2
28
FSEL
27
26
25
R3G12 100K
Note for layout: This part has
special pad on it's underside
R3V12
C3G12
3.92k_1% 0.1UF
R3V9 C3V4
VSENSE_2_D
1 2
C3H1
1
267_1% 8200pF
0.022uF
R3V13
NO_STUFF_4.99k_1% Vtt Sense
A
B
BOOT_1
C3G9
U3G1 0.022uF
24 6
VIN0 PH0
23 7
VIN1 PH1
22 8
VIN2 PH2
21 9
VIN3 PH3
20 TPS54610 10
VIN4 PH4
11
PH5
2 12
VSENSE PH6
L4G1
13
PH7
3 14 PH_1 1 2
NC/Comp PH8
4.7uH
4
PWRGD
5
BOOT
28 1
RT AGND
27 19
FSEL PGND0
18
PGND1
26 17
SS/ENA PGND2
16
PGND3
25 15
VBAIS PGND4
Note for layout: This part has
special pad on it's underside
C3F6
11,12,47,48 +V2.5_DDR
0.1UF
R3F21 43.2_1%
2.5V_DDR_EV 47
9,10,48 +V2.5_GMCH_SM
DDR_VR_PWRGD 39
R3W3
10K_1%
REFIN_2
U3G3
6
VIN0 PH0
7
VIN1 PH1
8
VIN2 PH2
9
VIN3 PH3
TPS54672
10
VIN4 PH4
11
PH5
12
VSENSE PH6 L4H1
13
PH7
PH_2
14 1 2
NC/Comp PH8
4.7uH
STATUS
BOOT
1
RT AGND
19
ENA PGND0
18
PGND1
17
REFIN PGND2
16
PGND3
15
VBAIS PGND4
B
C
9,11,12 +V2.5
Single point
sense
near load
C4F1
0.1UF
9,10,48 +V2.5_GMCH_SM
R2G7
10K_1%
Default: J3G1 No Jumper
J3G1
1 2
R3G9 0 R3G6
10K_1%
R3V11
10K_1%
C3V3
0.01UF
9,10,48 +V2.5_GMCH_SM
R3G2
10K_1%
R3G1
10K_1%
Vtt Sense
+VDDR
R4H1
0.01_1%
R3G11 0
19,25,32,37,38,44 PM_SLP_S3#
R3V10 NO_STUFF_0
19,20,32,37,38,44 PM_SLP_S4#
Vtt Sense
C
D
20..23,27,36,37,42,44
20..23,27,36,37,42,44 +V5
10
VDD+
8 U3G2B
SM_VREF_DIMM_EV 47 -
TLV2463
7
+
GND
4
20..23,27,36,37,42,44 +V5
R3V6
10
SM_VREF_MCH_EV 47
VDD+ NO_STUFF_10K
2 U3G2A
-
TLV2463
1
OPAMP2_EN
5
3
+
R3V7
GND
4
10K
R4G3 43.2_1%
C6J1 C4J1 C6J2 C4H1 C4H5
150uF 150uF 150uF 150uF 0.1UF
FSEL
Title
DDR VR
Size Project:
A Intel 852GM CRB
D
E
+V5
R3V8
C3G11 10K
0.1UF
9
SM_VREF_DIMM 11,12
6 OPAMP1_EN
R3V5
NO_STUFF_10K
R3G4 0
SM_VREF_MCH 7
1.25V_DDR_EV 47
Single point
sense
near load
14,47,48 +V1.25S
Non-EV Support EV Support
R3G4
R3V6
R3V7
Stuff
R3G9
R3G4
R3V7
No Stuff R3V6
R3G9
EV Support Resistor Options
Document Number Rev
A#
43 of 59
E
4
3
2
1