Design Guide
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
Vout=0.8(1+(3.92k/750))= 4.98V
Vout=0.8(1+Rtop/Rbot)
IMAX OUT = 50mV / 10mohms = 5A
ICH4 Pullups
+V5_ALWAYS Generation
FAB REVISION
Place these caps
near U4C1
Please place
C4C4 near
U4C1 Pin 9
Please place
C4P2 and
C4B8 near
Q4C1A.
Please place
C4C3 and
C4C6 near
R4C1
5
1
1
7
1
1
0
0
1
1
0
0
0
1
FAB ID Strapping Table
ICH_FAB_REV
00
1
1
0
0
2
6
4
0
BOARD FAB
1
0
3
2
1
0
8
0
1
1
1
BOTTOM
TOP
Layout:
CR4B2 needs to be placed
close to U4C1 & Q4C1
4.401
ICH4-M Pullups and Testpoints
A
21 50Monday, September 15, 2003
Intel 855GM/GME CRB <Doc>
Title
Size Document Number Rev
Date: Sheet
of
Project:
GND_V5A
V5A_SW
V5A_VOSENSE
V5A_SENSE+
RUN_SS
V5A_INTVCC
V5A_BG
V5A_ITH_D
V5A_BG_D
V5A_SENSE-
V5A_COSC
V5A_BOOST
V5A_TG
V5A_ITH
INT_PIRQH#18,22,23,37
PCI_REQ1#18,22
+VDC 16,39,45
PCI_PERR#18,22,23
ICH_FAB_REV019
INT_PIRQE#18,22,23
+V_RTC19,20
ICH_FAB_REV219
PCI_IRDY#18,22..24
PCI_FRAME#18,22..24
PCI_REQ3#18,23
INT_PIRQC#18,23,24
PCI_REQ0#18
+VDC 16,39,45
PCI_DEVSEL#18,22..24
INT_PIRQG#18,22,23
SMB_DATA18,22..24,46
INT_PIRQF#18,22,23
INT_IRQ1518,26,37
+V3.3S5,6,8,9,11,15..18,20,23,26,31,33..36,38..40,45
PM_PWROK19,25,32,37,39
+V5_ALWAYS
20,28,29
INT_PIRQB#15,18,23,24
PCI_SERR#18,22..24
+V5 20,22,23,27,36,37,44,45
PM_THRM#5,19,32,37
PM_RI#19,35,37
+V3.3ALWAYS_ICH20,37
INT_IRQ1418,26,37
ICH_FAB_REV119
+V3.3S_ICH19,20,22,24,37
PCI_REQ2#18,22
PM_RSMRST#19,32,37
PCI_TRDY#18,22..24
PCI_REQ4#18,24
V5A_PWRGD39
PCI_LOCK#18,22..24
PM_CLKRUN#19,22..24,32,34,37
SMB_ALERT#18,37
+V5_ALWAYS
20,28,29
+V3.3ALWAYS 5,15,19,20,22,23,27..29,32,36..39,45
INT_PIRQA#15,18,23,24
PCI_STOP#18,22..24
PCI_REQ64#22,23
PCI_ACK64#22,23
SM_INTRUDER#18,37
+V3.3ALWAYS_ICH20,37
+V3.3S_ICH19,20,22,24,37
INT_PIRQD#18,23,24
SMB_CLK18,22..24,46
+V5 20,22,23,27,36,37,44,45
RP7E1A 10K
1 8
C4C12
47pF
R8H2 8.2K
R2J4 100K
C4C8
10UF
R6F19
10K
RP8H1D 8.2K
4 5
R4C2
750_1%
C4C10
47pF
R8J1
2.2k
RP8H3B 8.2K
2 7
RP8G3D 8.2K
4 5
C4P2
100pF
10%
R4C6
37.4k_1%
RP8H3A 8.2K
1 8
R4N1
100K_1%
C4C9
1000PF
RP8G2A 8.2K
1 8
RP8G3C 8.2K
3 6
CR4C1
MBR0520LT1
2 1
C4P1
0.1UF
RP8G3A 8.2K
1 8
Q4C1B
SI4966DY
4
3
56
RP7J1A 8.2K
1 8
RP8H3C 8.2K
3 6
RP8H7B 10K
2 7
R7F5
NO_STUFF_10K
R7F8
10K
RP8H1C 8.2K
3 6
R8J3
2.2k
R4C4
10_1%
RP7F2A 8.2K
1 8
R4C1
0.01_1%
C4C13
330pF
RP8H2A 8.2K
1 8
C4C6
0.1UF
L4B1
4.7uH
1 2
RP8H1A 8.2K
1 8
RP8H3D 8.2K
4 5
R8J6 100K
R4C3
3.92k_1%
R4C7 0
RP8H2D 8.2K
4 5
RP8H7D 10K
4 5
C4C5
0.47uF
C4C4
0.1UF
RP7F2D 8.2K
4 5
C4B8
22UF
R4C5
10_1%
RP8H2B 8.2K
2 7
Q4C1A
SI4966DY
2
1
78
C4C11
3300pF
U4C1
LTC1735-1
16
15
14
13
12
11
10
1
2
3
8
7
5
6
9
4
TG
BOOST
SW
VIN
INTVCC
BG
PGND
COSC
RUN/SS
ITH
SGND
VOSENSE
SENSE-
SENSE+
EXTVCC
PGOOD
R6F20
NO_STUFF_10K
RP7J1D 8.2K
4 5
R6F24
10K
RP7F2C 8.2K
3 6
RP8H6C 10K
3 6
RP8H2C 8.2K
3 6
R4P1
NO_STUFF_680K
C4P3
1UF
12
CR4B2
B320A
2 1
RP8H1B 8.2K
2 7
RP7E1B 10K
2 7
RP7F2B 8.2K
2 7
R6F23
NO_STUFF_10K
R8H4 100K
RP8G3B 8.2K
2 7
C4C7
47pF
C4C3
150UF