User's Manual
11-29-1999_14:46 30
VRM
JP16 JP27 JP28JP29 JP30
RP24
0K
1
2
3
45
6
7
8VID1[0]
VID1[1]
VID1[2]
VID1[3]
VID1[4]
VID1[4:0]
5
R104
0K
VID3_R
VID2_R
VID1_R
VID0_R
R398
0K
10K
R371
VRM_G2
VRM_G1
Q4
4123
8765
R71
5.1-5%
OUTEN
VRM_PWRGD
33
2200UF
C100
2
1
C93
2200UF
1
2
2200UF
C103
2
1
JP9JP10 JP7JP6 JP8
R65
20
1200UF
C87
2
1
C111
1200UF
1
2
1200UF
C107
2
1
R55
8.2K
R53
5.6K
R332
220
2.7K
R54
VRM_COMP
VRM_SS
VRM_IFB
VRM_FAULT
VRM_VFB
VRM_COMP_R
C82
1200UF
1
2
C366
2200UF
1
2
Q5
5678
3214
Q3
5678
3214
Q2
4123
8765
PVCC_R
C72
0.01UF
1
2
C90
0.1UF
C73
150PF
C75
0.1UF
C86
0.1UF
10UF
C140
2
1
C74
0.01UF
C71
1000PF
1UF-X7R
C118
2
1
1UF-X7R
C119
1
2
VR3
18
17
16
15
14
19
6
9
4
3
7
13
20
8
1
5
2
12
10
11
VRM_IMAX
ETQP6F0R8L
1.0UH-20A
L18
IFB_Q
VRM_VCC5
DO3316P-102
1UH
L19
1UF-X7R
C97
2
1
J14
B16A16
B1A1
B2
B3A3
A2
B20
B19
B18
B17
A20
A19
A18
A17
B4
B5
B6
B7
B8
B9
B10
B11
B12
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13 B13
B14A14
B15A15
30 VID1_0R
30 VID1_2R
30 VID1_4R
30VID1_3R
33VRM1_PWRGD
R370
220
30VID1_1R
VID[4:0]
3
VID0
VID1
VID2
VID3
VID4
10K
R80
RP21
0K
8
7
6
54
3
2
1
30VID1_0R
30VID1_1R
30VID1_2R
30VID1_3R
30VID1_4R
VID4_R
PCD PLATFORM DESIGN
REV:
DRAWN BY:
LAST REVISED:
PROJECT:
SHEET:
FOLSOM, CALIFORNIA 95630
1900 PRAIRIE CITY ROAD
87654321
A
B
C
D
12345678
D
C
B
A
TITLE: INTEL(R) 820 CHIPSET DUAL PROCESSOR CUSTOMER REFERENCE BOARD
3.03
OF 38
R
VCCVID1
VCC3_3VCC3_3
VCC12 VCC5 VCC5 VCC12
G1
S1
S2
S3
D1
D2
D3
D4
SI4410DY
VCC3_3
+
+
+
+
+
+
VCC5
VCC12
+
+
G1
S1
S2
S3
D1
D2
D3
D4
SI4410DY
G1
S1
S2
S3
D1
D2
D3
D4
SI4410DY
G1
S1
S2
S3
D1
D2
D3
D4
SI4410DY
+
+
+
+
LTC1753
SENSE
SS
SGND
GND
VCC
PVCC
COMP
VID4
VID3
VID2
VID1
VID0
OUTEN IMAX
PWRGD
FAULT#
G1
G2
IFB
VFB
+
VCCVID
VCCVID1
GND8V_OUT3
V5_IN3V5_IN0
V5_IN4
V5_IN5V5_IN2
V5_IN1
GND10
V_OUT10
GND9
V_OUT9
V_OUT5
GND4
V_OUT4
GND3
V12_IN1
OUT_EN
VID1
VID3
PWR_GOOD
GND5
V_OUT6
GND6
V12_IN0
V12_IN2
ISHARE
VID0
VID2
VID4
V_OUT0
GND0
V_OUT1
GND1 V_OUT7
GND7V_OUT2
V_OUT8GND2
VRM8_4
RSV
VCC5
VID Override Jumpers
Sanyo 4SP2200M
No Stuff C106
C118, C119 must be next to FETs.
C82,C87,C107,C111 must support >6A of RMS current.
Place caps next to output FETs.
VRM
VRM requirements are based on VRM8.4 spec .
VID Override Jumpers
Default JP6-JP10 OUT.
Remove RP21, R398 for VID override.
Default JP16, JP27-JP30 OUT.
Remove RP24, R104 for VID override.