Ich5 (Power, Lpc, Clock, Smbus - EUROCOM L295U Series Service Manual

ICH5 (Power, LPC, Clock, SMbus)

SB3V
+ CT65 C107 CA121 CA111 CA236 C102
10u/10V_1206_R 1u 0.1u_X7R 0.1u_X7R 0.1u_X7R 0.01u
+3V
CA117 CA104 CA120 CA109 CA234 CA116
+ CT68 + CT69
10u/10V_1206 10u/10V_1206_R 0.1u_X7R 0.1u_X7R 0.1u_X7R 0.1u_X7R 0.1u_X7R 0.1u_X7R
LAD[0..3]
[21,22] LAD[0..3]
LAD0 T5
LAD0 /FB0
LAD1 R4
LAD1 /FB1
LAD2 R3
LAD2 /FB2
LAD3 U4
LAD3 /FB3
LPC
T4
[21,22] LFRAME# LFRAME# /FB4
U5
[22] LDRQ#
LDRQ0#
TZ1401 R2
LDRQ1#/GPIO41
T2
[22] THERM#
THRM#
THERMTRIP# T21
[3,16] THERMTRIP#
THRMTRIP#
TZ1402 T20
SLP_S1#/GPIO19
W1
[3,6,22] SUSB# SLP_S3#
U2
[22,26] SUSC#
SLP_S4#
TZ1403 AA3
SLP_S5#
Power
ICH5-PWROK AC12
PWROK
Y4
[22] PWRBTN#
PWRBTN#
AB3
[23] RI# RI#
Management
U1
[12] RESET-SW#
SYS_RESET#
AB13
[22] RSMRST# RSMRST#
R493 0 Z1401 AA1
LAN_RST#
LPCPD# AB1
SUS_STAT#/LPCPD#
SUSCLK Y1
SUSCLK
R20
[27] VRMPGD VRMPWRGD(VGATE)
BATLOW# AB2
BATLOW#/TP[0]
TZ1404 P20
DPRSLPVR
CA301 0.1u_R
R5
[21] PD66DET GPIO6/AGPBUSY#
U3
[21] SD66DET
GPIO7
4 5 Z1402 Y2
GPIO8
RN63 3 6 Z1403 W4
GPIO12
8P4R*10K 2 7 Z1404 W3
GPIO25
1 8 V3
SB3V
GPIO27
Z1406 W5
[16] GPO27 GPIO13
TZ1405 U21
GPIO18(STP_PCI#)
R496 10K TZ1406 U22
SB3V
GPIO20(STP_CPU#)
TZ1407 R1
GPIO21(C3_STAT#)
R497 0 TZ1408 U20
[22] LPCPME# GPIO22(CPUPERF#)
F22
GPIO23(SSMUXSEL)
W2
[12] GPO23
GPIO28 GPIO
TZ1410 T1
GPIO32
G23
GPIO33
TZ1412 F21
GPIO34
[12] SATALED#
R11
VSS
R14
VSS
T23
VSS
T3
VSS
T6
VSS
U19
VSS
V1
VSS
V21
VSS
W16
VSS
W18
VSS
Y3
VSS
Y6
VSS
Y7
VSS
Y8
VSS
Y10
VSS
SB3V
C230
0.1u
5 U25
2
[7] ICHSYNC#
4 Z1422 ICH5-PWROK
1 R441 0_R
[6,12,28] PWROK
3
74AHC1G08(SC-88A)_R
R440 0
C93 C86 C85 CA98 CA113 CA233
0.01u 0.01u 0.01u 0.1u_X7R 0.1u_X7R 0.1u_X7R
C104 C243
CA261
0.01u 0.01u
0.1u
Power
CPU
SMbus
Ground
SB3V
RESET-SW# R495 10K
BATLOW# R501 10K
SUSCLK R498 8.2K
SMBCLK R491 8.2K
SMBDATA R492 8.2K
LPCPD# R500 10K_R
+1.5V
CT61
CA115 CA107 CA112
+
10u/10V_1206_R
0.1u_X7R 0.1u_X7R 0.1u_X7R
VREF5V
CA253 C240
V_CORE
0.1u 0.01u
C228 CA105
0.01u 0.1u_X7R
RTC CIRCUIT
VREF5V
SB5V
U28A
CA108
0.1u_X7R
E16
V5REF_SUS
AD11
VCCRTC
V23
A20M# [3]
A20M#
P22
CPUSLP# CPUSLP# [3]
U24
FERR# FERR# [3]
R21
IGNNE# [3]
IGNNE#
R23
INIT# INIT# [3,21]
U23
INTR INTR [3]
R22
NMI NMI [3]
V24
SMI# SMI# [3]
T24
STPCLK# STPCLK# [3]
P23
RCIN# KBRST# [22]
T22
A20GATE [22]
A20GATE
P24
CPUPWRGD/GPIO49 CPUPWRGD [3]
R24 TZ1413
DPSLP#
AD2
SMBCLK [4,10,16,22]
SMBCLK
AD1
SMBDATA SMBDATA [4,10,16,22]
AC3 R489 10K
SMBALERT#/GPIO11
AD3 Z1412 R485 10K
SMLINK0
AA2 Z1413 R499 10K
SMLINK1
E24
SPKR ICHSPK [24]
Other Y12 Z1414 R442 1M
INTRUDER#
AD10 Z1415 R451 330K
INTVRMEN
V5 Z1416 R158 10K
LINKALERT#
AA12 Z1417
RTCRST#
F20
CLK14 ICH-14M [4]
F24
CLK48 ICH-48M [4]
N22
ICH66CLK [4]
CLK66
AC5
CLK100P CLK100 [4]
AD5
CLK100# [4]
CLK100N
Clock
AC11 Z1420
RTCX1
AB12 Z1421
RTCX2
P21 R448 10M
VSS
P15
VSS
P14
VSS
Y3
P13
VSS
P12 1 2
VSS
P11
VSS
P10
VSS 32.768KHz
P1
VSS
PIN3,4=GND
N20
VSS
N14
C234
VSS
N13
10p
VSS
N12
VSS
N11
VSS
M24
VSS
M22
VSS
M14
VSS
M13
VSS
ICH5
THERMTRIP# R421
KBRST# R418
A20GATE R419
THERM# R159
VRMPGD R420
V_CORE [2,3,4,22,27]
+1.5V [5,7,11,13,15,22,28]
+3V [3,4,5,6,11,12,13,15,16,17,19,20,21,22,23,24,26,27,28]
+5V [4,11,12,13,16,17,19,21,22,23,24,25,26,27,28]
SB3V [15,16,19,20,22,23,24,26]
SB5V [3,12,13,22,26,28]
ICH5 (Power, LPC, Clock, SMbus) (71-P2970-002A) B - 15
Schematic Diagrams
Sheet 14 of 28
D20
C A
+3V
ICH5 (Power, LPC,
R240S
R453 1K
+5V
Clock, SMbus)
RTC CIRCUIT
SB3V
RTCVCC
D26
1N4148
D27
C A Z1410
SD103AWS
CA251 CB17
R548
1K
0.1u_X7R 1u
Z1411
CN15 CN14
SMBALERT# [16]
SB3V
RTCVCC
SB3V
R200
RTCVCC
180K
SB3V
Z1418
CB6
Z1419
0.1u
R199
4.7K
J5
CMOS CON.
2-3:CLEAR CMOS
C236
10p
62_1%
V_CORE
8.2K
+3V
10K
8.2K
10K