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A B C D E
Intel 100 MHz Pentium(tm) II processor/440BX AGPset
Uniprocessor Customer Reference Schematics
4
Revision 1.0 4
** Please note that these schematics are subject to change.
TITLE PAGE
COVER SHEET 1
BLOCK DIAGRAM 2
THIS SCHEMATIC IS PROVIDED "AS IS" WITH NO WARRANTIES
SLOT 1 CONNECTOR 3,4 W H A T S O EVER, INCLUDING ANY WARRANTY OF
CLOCK SYNTHESIZER 5 MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE,
OR ANY WARRANTY OTHERWISE ARISING OUT OF PROPOSAL,
82443BX 6,7,8 SPECIFICATION OR SAMPLE.
3 DIMM SOCKETS 9,10,11 3
No license, express or implied, by estoppel or otherwise,
PIIX4E 12,13 to any intellectual property rights is granted herein.
ULTRA I/O 14
Intel disclaims all liability, including liability for infringement of
AGP CONNECTOR 15
any proprietary rights, relating to use of information in this
PCI CONNECTORS 16,17 specification. Intel does not warrant or represent that such
use will not infringe such rights.
ISA CONNECTORS 18
IDE CONNECTORS 19 I2C is a two-wire communications bus/protocol developed
USB CONNECTORS 20 by Philips. SMBus is a subset of the I2C bus/protocol and
was developed by Intel. Implementations of the I2C
FLASH BIOS 21 bus/protocol or the SMBus bus/protocol may require
2 PARALLEL 22 licenses from various entities, including Philips Electronics 2
N.V. and North American Philips Corporation.
SERIAL/FLOPPY 23
KEYBOARD/MOUSE 24 *Third-party brands and names are the property
VRM 25 of their respective owners.
POWER CONNECTOR 26
Copyright * Intel Corporation 1997, 1998
GTL+ TERMINATION 27
PCI/AGP PULLUPS/PULLDOWNS 28
INTEL CORPORATION
ISA PULLUPS/PULLDOWNS 29
PLATFORM COMPONENTS DIVISION
82443BX DECOUPLING 30 1900 PRAIRIE CITY RD. FM5-62
1
FOLSOM, CA 95630 1
BULK DECOUPLING 31
Title
TERMINATION DECOUPLING 32 Intel 100MHz Pentium(tm) II processor/440BX AGPset Uni-Processor Cover Sheet
LM79 33 Size Document Number Rev
A Intel(R) 440BX AGPset 1.0
REVISION HISTORY 34
Date: Thursday, April 09, 1998 Sheet 1 of 34
A B C D E
1 2 3 4 5 6 7 8
THIS DRAWING CONTAINS INFORMATION WHICH HAS NOT
P E N T I U M (tm) II CK100 BEEN VERIFIED FOR MANUFACTURING AN END USER
VRM PROCESSOR & P R O DUCT. iNTEL IS NOT RESPONSIBLE FOR THE MISUSE
VTT GEN. ITP CON. O F THIS INFORMATION.
PG. 25 (SLOT 1) PG. 5
PG. 3,4
A A
SMBus DEVICE TABLE
ADDR
CNTL
MAX1617 ME
DATA
Interface PG. 3
DEVICE REFERENCE PAGE #
SYSTEM BUS TYPE DESIGNATOR
GTL
TERM. FUSES F1,F2,F3,F4 20,24
PG. 27
ADDR
CNTL
DATA
ITP Connector J2 5
DIMM Sockets J4,J5,J6 9,10,11
ISA Connectors J12, J13 18
CNTL MEMORY IDE Connectors J14, J15 19
ADDR/DATA 3 SDRAM DIMM
ADDR MODULES USB Connectors J16, J17 20
AGP
C O N N. CNTL
82443BX PG. 9-11
VRM8.2 J24 25
492 BGA CKBF Slot 1 Connector J33 A,B 3,4
PG. 6 AGP Connector J32 15
AGP SIDEBAND
PG. 15 PG. 6-8 DATA PCI Connectors J34-37 16,17
B B
BLM31A700S L1-L6,L7-L13 20,24
ADD/DATA
CNTL
CK100 U1 5
PCI BUS 74LVC14 3VSB U5 A,B,C,D,E,F 13,26
FDC37C932FR U6 14
74AS07 U7 A,B,C,D,E,F 15,26,29
PG. 20
ADD/DATA
CNTL
2 USB CONN. 74HCT14 U8 A,B,C,D,E,F 21,25,26
PG. 16-17
2 PCI IDE
USB
USB
CONNECTORS E28F002BC-T(FLASH) U9 21
PCI CONN
PCI CONN
PCI CONN
PCI CONN
PG. 19 74F07 U12 A,B,C,D,E,F 25,26,29
CNTL
74LVC3244 U13 25
IDE
SECONDARY
IDE
PRIMARY
CNTL
82371EB 74ALS08 U16 A,B,C,D 26,29
324 BGA ADDR/DATA
PG. 12-13 74HC10 5VSB U17 A,B,C 13,26,29
ADDR/DATA
82443BX U19-1,2,3 6,7,8
C
CKBF U20 6 C
CONTROL
ADDR
CNTL
DATA
LM79 U21 33
74F07 5VSB U28 A,B,C,D,E,F 13,26,29
ISA BUS 82371EB (PIIX4E) U23 A,B 12,13
MAX1617 ME U24 3
74HC112 U27 A,B 13
P G 18
ADDR
CNTL
ADDR
DATA
LT1585 VR1 25
ADDR
LT1575 VR2 25
ISA CONN
ISA CONN
FLASH DATA X-BUS
BIOS
PG. 21
Crystal (14.318MHz) Y1 5
KEYBOARD ULTRA I/O CNTL Crystal(32.768KHz) Y2 13
PG. 24 PG.14
LM79
PG. 33
DATA
MOUSE
D D
PG. 24
SER.
FLOPPY PARA. CONN. INTEL CORPORATION
CONN. CONN.
RESET, POWER CONNECTORS PG. 26
PG. 23 PG. 20 PG .23 P L A T F O R M COMPONENTS DIVISION
1 9 0 0 P R A I R I E CITY RD. FM5-62
SER. PG. 28-29 FOLSOM, CA 95630
CONN.
ISA, PCI RESISTORS
Title
DECOUPLING CAPACITORS PG. 30-32 I N T E L 1 0 0 M H z P e n t i u m ( t m ) I I p r ocessor/440BX AGPset Block Diagram
Size Document Number Rev
Custom Intel(R) 440BX AGPset 1.0
Date: T hursday, April 09, 1998 Sheet 2 of 34
1 2 3 4 5 6 7 8
A B C D E
VCC2.5 VTT
VCC2.5
* Note: This strong pullup resistor on
S L P # i s n e c e s s a r y when using an R1 VCCCORE VTT
VCC3 330 J 3 3A
LAI.
R3
B01 EMI VCC_VTT A01 4.7K
4 VCC3 B02 FLUSH# GND A02 4
28 F L U S H# B03 SMI# VCC_VTT A03
13,28 PX4_SMI# B04 INIT# IERR# A04
13,28 HINIT# B05 VCC_VTT A20M# A05 A20M# 25,28
C164 B06 STPCLK# GND A06
R239 13,28 STPCLK# B07 TCK FERR# A07
4 . 7K 5 TCK F E R R# 13,28
0.1 uF B08 SLP# IGNNE# A08 I G N N E # 2 5 ,28
13 SLP#
U24 B09 VCC_VTT TDI A09 TDI 5
5 TMS
2
B10 TMS GND A10
5 TRST#
B11 TRST# TDO A11
V+
TDO 5
15 B12 RESERVED PWRGOOD A12 P W RGOOD 2 1 ,26
S T BY# C188 B13 VCC_CORE TESTHI1 A13
3 2 2 00pF B14 RESERVED GND A14
S M B SLAVE D+
4 B15 RESERVED THERMTRIP# A15 T H E R MTRIP# 28
D-
A D D R ESS 6 B16 LINT[1] RESERVED A16
ADD1
= 0011000b 10 25,28 LINT1 B17 VCC_CORE LINT[0] A17 LINT0 25,28
ADD0
B18 PICCLK GND A18
MAX1617 ME 5 P I C C LK
B19 BP#[2] PICD[0] A19 P I C D 0 28
16p QSOP B20 RESERVED PREQ# A20 ITPREQ# 5
6 , 9 , 1 0,11,13,28,33 S M BDATA 12 B21 100/66# BP#[3] A21
SMBDATA 5,11 100/66#
B22 PICD[1] GND A22
28 P I C D1
6 , 9 , 1 0,11,13,28,33 SMBCLK 14 B23 PRDY# BPM#[0] A23
SMBCLK 5 , 27 P R D Y#0
11 B24 BPM#[1] BINIT# A24
SMB_ALERT#
B25 VCC_CORE DEP#[0] A25
B26 DEP#[2] GND A26
1 THERM# 13,28 B27 DEP#[4] DEP#[1] A27
R E SV
5 B28 DEP#[7] DEP#[3] A28
R E SV
3 9 B29 VCC_CORE DEP#[5] A29 3
R E SV
13 H D # 62 B30 D#[62] GND A30
R E SV
16 H D #58 B31 D#[58] DEP#[6] A31
R E SV
H D #63 B32 D#[63] D#[61] A32 H D # 61
GND
GND
B33 VCC_CORE D#[55] A33 H D # 55
H D # 56 B34 D#[56] GND A34
H D # 50 B35 D#[50] D#[60] A35 H D # 60
7
8
MAX1617_2 B36 D#[54] D#[53] A36
H D # 54 H D # 53
B37 VCC_CORE D#[57] A37 H D # 57
H D # 59 B38 D#[59] GND A38
H D # 48 B39 D#[48] D#[46] A39 H D # 46
H D # 52 B40 D#[52] D#[49] A40 H D # 49
B41 EMI D#[51] A41 H D # 51
H D # 41 B42 D#[41] GND A42
H D # 47 B43 D#[47] D#[42] A43 H D # 42
H D # 44 B44 D#[44] D#[45] A44 H D # 45
B45 VCC_CORE D#[39] A45 H D # 39
H D # 36 B46 D#[36] GND A46
H D # 40 B47 D#[40] RESERVED A47
H D # 34 B48 D#[34] D#[43] A48 H D # 43
B49 VCC_CORE D#[37] A49 H D # 37
H D # 38 B50 D#[38] GND A50
H D # 32 B51 D#[32] D#[33] A51 H D # 33
H D # 28 B52 D#[28] D#[35] A52 H D # 35
B53 VCC_CORE D#[31] A53 H D # 31
H D # 29 B54 D#[29] GND A54
H D # 26 B55 D#[26] D#[30] A55 H D # 30
2 H D # 25 B56 D#[25] D#[27] A56 H D # 27 2
B57 VCC_CORE D#[24] A57 H D # 24
H D # 22 B58 D#[22] GND A58
H D # 19 B59 D#[19] D#[23] A59 H D # 23
H D # 18 B60 D#[18] D#[21] A60 H D # 21
B61 EMI D#[16] A61 H D # 16
H D # 20 B62 D#[20] GND A62
H D # 17 B63 D#[17] D#[13] A63 H D # 13
H D # 15 B64 D#[15] D#[11] A64 H D # 11
B65 VCC_CORE D#[10] A65 H D # 10
H D # 12 B66 D#[12] GND A66
HD#7 B67 D#[7] D#[14] A67 H D # 14
HD#6 B68 D#[6] D#[9] A68 HD#9
B69 VCC_CORE D#[8] A69 HD#8
HD#4 B70 D#[4] GND A70
HD#2 B71 D#[2] D#[5] A71 HD#5
HD#0 B72 D#[0] D#[3] A72 HD#3
B73 VCC_CORE D#[1] A73 HD#1
SLOT1_0.8
SLOT 1a
8 , 27 H D # [ 6 3 : 0]
1 I N T E L C O R P O RATION 1
R4 R5 R6
0 0 0 P L A T F O R M C O M P O NENTS DIVISION
1 9 0 0 P R A I R I E C I T Y RD. FM5-62
F O L S OM, CA 95630
Title
S L O T 1 (PART I)
* P lease place as close to the connector as possible
Size Document Number Rev
Custom 1.0
Intel(R) 440BX AGPset
D a t e : Thursday, April 09, 1998 Sheet 3 of 34
A B C D E
A B C D E
V C C C O RE
VCC VCC3
4 4
J33B
5 , 6,27 H R E SET# B74 RESET# GND A74
B75 BREQ1# BCLK A75 CPUHCLK 5
B76 FRCERR# BREQ0# A76 BREQ0# 6,27
B77 VCC_CORE BERR# A77
B78 A#[35] GND A78
B79 A#[32] A#[33] A79
H A # 29 B80 A#[29] A#[34] A80