
B.Schematic Diagrams
ICH4 - 1
+3V
HUB_PD3
+3VS
2,4,6,9,10,12,13,14,15,17,20,21,22,23
+3V
INT_APICCLK 9
SMB_ICHCLK 7,9
H_SMI#
ICH4-M PART A
PCI I/F
CPU I/F
HUB I/F
INTERRUPT I/F
EEPROM
LAN I/F
System Manamement I/F
BGA2A
ICH4-M
H5
J3
H3
K1
G5
J4
H4
J5
K2
G2
L1
G4
L2
H2
L3
F5
F4
N1
E5
N2
E3
N3
E4
M5
E2
P1
E1
P2
D3
R1
D2
P4
J2
K4
M4
N4
C1
E6
A7
B7
D6
B1
A2
B3
C7
B6
P5
M3
F1
B5
A6
E8
C5
L5
G1
L4
M2
W2
U5
K5
F3
F2
W6
AC3
AB1
AC4
AB4
AA5
Y22
AB23
U23
AA21
W21
V22
AB22
V21
Y23
U22
U21
W23
V23
L19
L20
M19
M21
P19
R19
T20
R20
P23
L22
N22
K21
T21
N20
P21
R23
M23
R22
J19
H19
K20
D5
C2
B4
A3
C8
D7
C3
C4
AC13
AA19
J22
D10
D11
A8
C12
A10
A9
A11
B10
C10
A12
C11
B11
Y5
PCI_AD0
PCI_AD1
PCI_AD2
PCI_AD3
PCI_AD4
PCI_AD5
PCI_AD6
PCI_AD7
PCI_AD8
PCI_AD9
PCI_AD10
PCI_AD11
PCI_AD12
PCI_AD13
PCI_AD14
PCI_AD15
PCI_AD16
PCI_AD17
PCI_AD18
PCI_AD19
PCI_AD20
PCI_AD21
PCI_AD22
PCI_AD23
PCI_AD24
PCI_AD25
PCI_AD26
PCI_AD27
PCI_AD28
PCI_AD29
PCI_AD30
PCI_AD31
PCI_C/BE0#
PCI_C/BE1#
PCI_C/BE2#
PCI_C/BE3#
PCI_GNT0#
PCI_GNT1#
PCI_GNT2#
PCI_GNT3#
PCI_GNT4#
PCI_REQ0#
PCI_REQ1#
PCI_REQ2#
PCI_REQ3#
PCI_REQ4#
PCI_CLK
PCI_DEVSEL#
PCI_FRAME#
PCI_GPIO0/REQA#
PCI_GPIO1/REQB_L/REQ5#
PCI_GPIO16/GNTA#
PCI_GPIO17/GNTB_L/GNT5#
PCI_IRDY#
PCI_PAR
PCI_PERR#
PCI_LOCK#
PCI_PME#
PCI_RST#
PCI_SERR#
PCI_STOP#
PCI_TRDY#
SM_INTRUDER#
SMLINK0
SMLINK1
SMB_CLK
SMB_DATA
SMB_ALERT#/GPIO11
CPU_A20GATE
CPU_A20M#
CPU_DPSLP#
CPU_FERR#
CPU_IGNNE#
CPU_INIT#
CPU_INTR
CPU_NMI
CPU_PWRGOOD
CPU_RCIN#
CPU_SLP#
CPU_SMI#
CPU_STPCLK#
HUB_PD0
HUB_PD1
HUB_PD2
HUB_PD3
HUB_PD4
HUB_PD5
HUB_PD6
HUB_PD7
HUB_PD8
HUB_PD9
HUB_PD10
HUB_PD11
HUB_CLK
HUB_PSTRB#
HUB_PSTRB
HUB_RCOMP
HUB_VREF
HUB_VSWING
INT_APICCLK
INT_APICD0
INT_APICD1
INT_PIRQA#
INT_PIRQB#
INT_PIRQC#
INT_PIRQD#
INT_PIRQE#/GPIO2
INT_PIRQF#/GPIO3
INT_PIRQG#/GPIO4
INT_PIRQH#/GPIO5
INT_IRQ14
INT_IRQ15
INT_SERIRQ
EEP_CS
EEP_DIN
EEP_DOUT
EEP_SHCLK
LAN_RXD0
LAN_RXD1
LAN_RXD2
LAN_TXD0
LAN_TXD1
LAN_TXD2
LAN_JCLK
LAN_RSTSYNC
LAN_RST#
T
C201
0.1U_04
HUB INTERFACE VSWING VOLTAGE
Z1103
PCI_REQ2#
13,17
C209
0.1U_04
R242
150_1%
PCI_AD4
PCI_SERR#
13,17,18,20
R346
10K_04
SPEAK => CPU FREQ STRAPPING
PCI_AD17
ICHPWROK 10,12,20
IDE_PATADET 13
SMB_ICHDATA 7,9
PCI_AD6
-SOE => Auto Reboot Select
+3V
PCI_PAR
17,18,20
FLASH#
14
PCI_AD19
PCI_AD12
+1.5VS
PCIRST#
SMB_ICHCLK
PCI_AD29
INT_APICD0
R99
1K_04_R
Z1112
C419
0.01U_04
PCI_AD3
H_DPSLP#
T
R271
10K_04
GPIO1
T
R109
8.2K_04
GPIO2
PCI_AD5
Z1102
GPIO0
U10
MAX6306
1
2
3
4
5
RESET#
GND
MR#
RST-IN
VCC
+3V
PCI_AD10
H_NMI
R122
8.2K_04
R324
10K_04
PCI_C/BE0#
17,18,20
Z1101
H_INTR
2
GPIO0
T
H_NMI
2
PCI_AD26
PCI_AD11
HUB_PD5
Q30
BSS138
G
D
S
T
PCI_LOCK#
13
INT_PIRQD# 13,18,20
INT_APICD0
PCI_AD15
PCIRST#
VR_ON
23
PCI_AD2
H_SMI#
2
HUB_PD10
PCI_AD0
H_A20GATE 21
PCI_REQ3#
13,20
CLK_ICH66 9
Z1105
+3V
2,10,12,13,15,17,18,19,20,21,22,23
+2.5V
PCI_AD[31:0]
17,18,20
GPIO5
R69
10K
T
PCI_GNT3#
20
R268
0
PCI_AD13
PCI_GNT0#
R269
8.2K_04
C505
0.1U_04_R
R246
56
HUB_VREF and HUB_VSWING
circuits for internal testing
need 10 mil traces w/ 20 mil
spacing
ICHPWROK
10,12,20
HUB_PD7
HUB_PD11
Z1119
PCI_AD25
GPIO2
H_RCIN#
21
HUB_RCOMP_ICH
Z1117
SUSB#
3,12,17,20,21,23
Z1108
SMB_ICHCLK
Z1121
PCI_AD23
R313
10K_04
PCI_GNT0#
18
INT_SERIRQ
+5VS
13,14,15,16,20,21,22,23,24
H_A20M# 2
+1.5VS
PCI_AD24
PRST#
17,18,20
T
1 - Disable (Default)
+1.5VS
+3V
T
PCI_STOP#
13,17,18,20
Z1111
-ROMCS => LPC ROM Select
PCI_C/BE1#
17,18,20
PCI_AD30
R110
10K_04
+3VS
+3VS
PCI_PME#
17,18,20,21
Z1107
C417
0.1U_04
HUB_PD[10:0]
5
SMB_ICHDATA
INT_APICCLK
PCI_TRDY#
13,17,18,20
H_PWRGD
Z1115
PCI_AD7
T
T
R93
1K_04
PCI_AD16
Z1106
PCI_C/BE2#
17,18,20
PCI_C/BE3#
17,18,20
PCI_FRAME#
13,17,18,20
HUB_PD4
U9
74AHC1G04
1
2
5
3
4
R344
0
H_RCIN#
R97
20K
R100
180K
R101
8.2K_04
GPIO1
PCI_AD18
FERR#
INT_PIRQC# 13,17,20
EEP_DOUT
INT_APICD1
H_A20GATE
PCI_IRDY#
13,17,18,20
INT_SERIRQ 14,18,21
Z1120
U25
74AHC1G08_R
1
2
4
5
3
H_FERR# 2
0 - Enable
R114
8.2K_04
R235
130_1%
PCI_PERR#
13,17,18,20
HUB_PD6
Z1114
R73
56
R74
150_1%
R279
10K_04
+2.5V
3,4,6,7,17,20
1 - Disable
+1.8VS
ICHPWROK
Z1116
R348
0_R
0 - Enable
Z1113
INT_APICCLK
HUB_PD2
T
+1.5VS
4,6,13,23
PCI_AD21
Z1110
PCI_AD9
PCIRST#
4,14,16,17,18,20,21
H_STPCLK# 2
R232
0
+VCCRTC
H_DPSLP# 2,4
H_PWRGD 2
GPIO5
PCI_AD14
INT_IRQ15 13,16
H_IGNNE# 2
INT_APICD1
R315
100K
+1.8VS
3
H_INIT#
SUSB#
3,12,17,20,21,23
H_CPUSLP#
SMBALT#
PCI_REQ0#
13,18
PCI_REQ1#
13
PCI_AD27
HUB_VSWING_ICH
H_INTR
Z1118
INT_PIRQA# 13,20
INT_PIRQB# 13,18,20
Z1109
HUB_VREF_ICH
IDE_SATADET 13
INT_SERIRQ
+3V
H_A20M#
HUB_PD9
PCI_AD20
R332
10K_04
H_INIT#
2
HUB INTERFACE LAYOUT: Route singnals
with 4/8 trace/space routing .Singals
must match +/-0.1" of HUB_STB/STB#
SIGNALS
H_CPUSLP# 2
PCI_AD28
T
HUB_PD1
PCI_AD8
R102
1K_04
PCI_DEVSEL#
13,17,18,20
Z1104
R75
487_1%
T
PRSTEN
12
H_STPCLK#
T
Q15
3904
B
E
C
+1.5VS
R306
10K_04
+5VS
HUB_PSTRB 5
VR_ON
INT_IRQ14 13,16
HUB_PD8
CLK_ICHPCI
9
SMB_ICHDATA
HUB_PD0
PCI_REQ4#
13
PCI_AD31
HUB_PSTRB# 5
PCI_GNT2#
17
PCI_AD22
PCI_AD1
R105
1K_04
C169
0.1U_04
D27
RB751V
A
C
R231
0_R
PCI_PAR
C170
0.1U_04
+VCCRTC 12,13
H_IGNNE#
R76
48.7_1%
Sheet 11 of 31
ICH4 - 1
TECHNICAL SERVICE MANUAL
Prestigio Visconte 125W
12
Summary of Contents for Visconte
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