User's Manual
11-29-1999_14:46 11
ICH
GPIO12
GPIO13
R212
8.2K
8.2K
R215
LPC_PME#
14
LPC_SMI#
14
8.2K
R317
8.2K
R254
GPIO21
R98
0K
RTCX1
VBAT_RTC
20
GPIO26_FPLED
AC_SDOUT_STRAP
JP5
1K
R250
8.2K
R232
15,17
AC_BITCLK
9,18,31,33
PWROK
SMBDATA_CORE
3,5,13,34
SMBCLK_CORE
3,5,13,34
17
AC_RST#
15,17
AC_SYNC
15,17
AC_SDATAIN0
17
AC_SDATAIN1
11,20
SPKR
12,14
LAD0/FWH0
LAD1/FWH1
12,14
12,14
LAD2/FWH2
12,14
LAD3/FWH3
LFRAME#/FWH4
12,14
USBP1P
25
USBP1N
25
USBP0P
25
USBP0N
25
24
SIORDY
24
PIORDY
SDIOW#
24
PDIOW#
24
SDIOR#
24
PDIOR#
24
SDDACK#
24
PDDACK#
24
SDREQ
24
PDREQ
24
SDA2
SDA0
24
SDA[2:0]
SDA1
PDA1
PDA0
PDA2
24
PDA[2:0]
24
SDCS#3
24
PDCS#3
SDCS#1
24
PDCS#1
24
OC#1
25
OC#0
25
1K
R230
32.768KHZ
Y4
21
31,33
SLP_S3#
PDD14
PDD13
PDD12
PDD11
PDD10
PDD9
PDD8
PDD7
PDD6
PDD5
PDD4
PDD3
PDD2
PDD1
PDD0
PDD[15:0]
24
PDD15
SDD12
SDD13
SDD14
SDD15
SDD11
SDD10
SDD9
SDD8
SDD7
SDD6
SDD5
SDD4
SDD3
SDD2
SDD1
SDD[15:0]
24
SDD0
R233
1K
R245
1K
ICH_CLK66
7
ICH_14MHZ
7
ICH_48MHZ
7
R341
2.7K
MULT0_GPIO
7
34
SMB_ALERT
PWRBTN#
20
27
ICH_RI#
11,20
SPKR
10M
R249
14
LDRQ#0
32
SLP_S5#
INTRUDER#
8.2K
R231
3,5THRM#
RTC_CLR
GPIO8
SPKR_STRAP
VBAT_CR
VCC5_REF
8.2K
R241
JP26
VBAT_RC
2.7K
R90
RSMRST#
19,33
7,14
MULT1_GPIO
0.047UF
C249
12PF
C251
0.1UF
C233
C250
12PF
1UF
C246
12
1UF
C234
21
C247
2.2UF
21
BAT17
CR5
C
A
BAT17
CR4
A
C
BAT17
CR3
C
A
U13
L5
J3
L1
N1
C15
J4
M1
L4
P16
R17
R15
U17
T15
P14
T14
U14
T13
P13
R14
U15
U16
T17
R16
P15
H1
H3
P10
T10
P9
T9
P8
T8
N7
P7
U8
U7
R7
R8
U9
R9
N9
R10
N17
N11
N15
T11
N16
R11
M13
U12
P17
U11
L13
M15
M16
T12
R12
L16
U13
L14
N12
U4
T4
T5
U5
R6
D15
H4
H2
E11
D11
K4
F1
M2
G1
A16
N4
L2
M5
K2
J1
P3
U6
D13
B14
U1
T2
U2
T3
U3
N3
T6
P1
P2
N2
R1
M3
M4
J2
P12
L3
T1
D14
K3
R3
GPIO23_FPLED
20
ALERTCLK_SBY
18,34
ALERTDATA_SBY
18,34
JP20
3
2
1
RTC_RST_JP
BAT1
1
2
3
VBIAS
RTCX2
R247
10M
11,15,17
AC_SDATAOUT
AC_SDATAOUT
11,15,17
8.2K
R238
7 DRCG_CTRL
23 PCI_TEST
R162
0K
RTCRST#
VCC_RTC_JP
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
VCC3_3
VCC3_3 VCC5VCC3_3SBY
XTAL
VCC3_3
VCC3_3SBY
VCC3_3SBY
VCC3_3
+
+
+
-
+
-
+
-
+
SYSTEM
LPC
AC97
USB
GPIO
IDE
ICH_B
ICH_096
AC_BIT_CLK
GPIO24/SLP_S3#
THRM#
AC_RST#
RI#
PDA2
SMBCLK
OC1#
OC0#
USBP1+
USBP0-
USBP1-
USBP0+
LDRQ0#
GPIO8/LDRQ1#
SPKR
AC_SYNC
CLK48
AC_SDOUT
ACSDIN0
GPIO21
GPIO22
CLK14
GPIO9/AC_SDIN1
SMBDATA
SLP_S5#
GPIO27/ALERT_CLK
GPIO13
GPIO12
CLK66
VCCRTC
PWRBTN#
RSMRESET#
SUSCLK/GPIO26
GPIO5
GPIO6
VBIAS
RTCX2
GPIO23
LAD0/FWH0
LAD1/FWH1
LAD2/FWH2
LAD3/FWH3
LFRAME#/FWH4
PDCS1#
SDCS1#
PDCS3#
SDCS3#
PDA0
PDA1
SDA0
SDA1
SDA2
PDDREQ
SDDREQ
PDDACK#
SDDACK#
PDIOR#
SDIOR#
PDIOW#
SDIOW#
PIORDY
SIORDY
PDD0
PDD1
PDD2
PDD3
PDD4
PDD6
PDD7
PDD5
PDD8
PDD9
PDD10
PDD11
PDD12
PDD13
PDD14
PDD15
RTCX1
RTCRST#
SDD0
SDD1
SDD2
SDD3
SDD4
SDD5
SDD6
SDD7
SDD8
SDD9
SDD10
SDD11
SDD12
SDD13
SDD14
SDD15
GPIO25/SUSSTAT#
GPIO11/SMBALERT#
GPIO10/INTRUDER#
VCC5REF
VCCSUS
VCCSUS1
PWROK
GPIO28/ALERT_DATA
+
ICH
Use CR2032 battery.
Strap JP26
No WD Reboot IN
Reboot on WD* OUT
Strap JP5
Safe Mode IN
ICH strap* OUT
CMOS JP20
Normal* 1-2
Clear 2-3