Intel PD440FX User Manual
PD440FX Motherboard
Technical Product Specification
April, 1997
Order Number 282952-001
The PD440FX motherboard may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized
errata are documented in the PD440FX Motherboard Specification Update.
Revision History
Revision
-001
Revision History Date
First release of the PD440FX Motherboard Technical Product Specification. 4/97
This product specification applies only to PD440FX motherboards with BIOS identifier
1.00.XX.DT0_.
Changes to this specification will be published in the PD440FX Motherboard Specification Update
before being incorporated into a revision of this document.
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or
otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of
Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to
sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or
infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life
saving, or life sustaining applications.
Intel retains the right to make changes to specifications and product descriptions at any time, without notice.
The PD440FX motherboard may contain design defects or errors known as errata which may cause the product to deviate
from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order.
†
Third-party brands and names are the property of their respective owners.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
obtained from:
Intel Corporation
P.O. Box 7641
Mt. Prospect, IL 60056-7641
or call in North America 1-800-879-4683, Europe 44-0-1793-431-155, France 44-0-1793-421-777,
Germany 44-0-1793-421-333, other Countries 708-296-9333.
Copyright 1997, Intel Corporation. All rights reserved.
Contents
1 Motherboard Description
1.1 Overview...................................................................................................................... 9
1.2 Motherboard Manufacturing Options..........................................................................10
1.3 Motherboard Components .........................................................................................11
1.4 Form Factor ...............................................................................................................12
1.5 I/O Shield...................................................................................................................13
1.6 Microprocessor...........................................................................................................15
1.6.1 Microprocessor Packaging...........................................................................15
1.6.2 Second Level Cache ...................................................................................15
1.7 Main Memory .............................................................................................................16
1.7.1 EDO DRAM .................................................................................................16
1.7.2 Parity/ECC DRAM........................................................................................17
1.8 Chipset.......................................................................................................................18
1.8.1 82441FX PCI Bridge and Memory Controller (PMC) ...................................18
1.8.2 82442FX Data Bus Accelerator (DBX).........................................................18
1.8.3 82371SB PCI/ISA IDE Xccelerator (PIIX3) ..................................................18
1.8.4 Universal Serial Bus (USB) Support ............................................................19
1.8.5 IDE Support.................................................................................................20
1.9 Super I/O Controller ...................................................................................................20
1.9.1 Serial Ports..................................................................................................21
1.9.2 Parallel Port.................................................................................................21
1.9.3 Floppy Controller .........................................................................................21
1.9.4 Keyboard and Mouse Interface....................................................................21
1.9.5 Real-time Clock, CMOS RAM, and Battery..................................................22
1.9.6 Infrared Support...........................................................................................22
1.10 Audio Subsystem.......................................................................................................23
1.10.1 OPL3 Audio System ....................................................................................23
1.10.2 OPL4-ML Wavetable Synthesizer................................................................23
1.10.3 Audio Subsystem Resources.......................................................................23
1.10.4 Audio Drivers and Utilities............................................................................24
1.10.5 Audio Connectors ........................................................................................24
1.11 Management Extension Hardware.............................................................................25
1.11.1 Chassis Security Header (J6C1)..................................................................25
1.11.2 GP I/O Header.............................................................................................25
1.12 Motherboard Connectors ...........................................................................................26
1.12.1 Power Supply Connector .............................................................................31
1.12.2 Front Panel Connectors...............................................................................32
1.12.3 Hard Drive LED (HDD LED) Header............................................................35
1.12.4 Back Panel Connectors...............................................................................36
1.12.5 Add-in Board Expansion Connectors...........................................................39
iii
PD440FX Technical Product Specification
1.13 Jumper Settings.........................................................................................................43
1.13.1 Processor Configuration (J9C1-A, B, C) ......................................................44
1.13.2 BIOS Recovery (J9C1-A).............................................................................44
1.13.3 CMOS Clear (J9C1-C).................................................................................44
1.13.4 Password Clear (J9C1-D)............................................................................44
1.13.5 BIOS Setup Access (J9C1-D)......................................................................44
1.14 Reliability....................................................................................................................45
1.15 Environmental Specifications .....................................................................................45
1.16 Power Consumption...................................................................................................46
1.16.1 Power Supply Considerations......................................................................46
1.17 Thermal Considerations.............................................................................................47
1.18 Regulatory Compliance..............................................................................................48
1.18.1 Product Certification Markings.....................................................................48
1.18.2 Safety ..........................................................................................................48
1.18.3 EMI..............................................................................................................49
2 Motherboard Resources
2.1 Memory Map..............................................................................................................51
2.2 DMA Channels...........................................................................................................51
2.3 I/O Map......................................................................................................................52
2.4 PCI Configuration Space Map....................................................................................54
2.5 Interrupts....................................................................................................................54
2.6 PCI Interrupt Routing Map .........................................................................................55
3 Overview of BIOS Features
3.1 Introduction................................................................................................................ 57
3.1.1 BIOS Upgrades ...........................................................................................57
3.1.2 Autoconfiguration of PCI Devices and Plug and Play Devices ....................58
3.1.3 PCI IDE Support ..........................................................................................58
3.1.4 ISA Plug and Play........................................................................................58
3.1.5 ISA Legacy Devices.....................................................................................59
3.1.6 Desktop Management Interface (DMI).........................................................59
3.1.7 Advanced Power Management (APM).........................................................60
3.1.8 Advanced Power Control (APC) ..................................................................60
3.1.9 Language Support .......................................................................................60
3.1.10 Boot Options................................................................................................61
3.1.11 OEM Logo or Scan Area..............................................................................61
3.1.12 USB Support................................................................................................61
3.1.13 BIOS Setup Access Jumper ........................................................................61
3.1.14 Recovering the BIOS...................................................................................61
iv
4 BIOS Setup Program
4.1 Main BIOS Setup Screen...........................................................................................66
4.1.1 System Date................................................................................................66
4.1.2 System Time................................................................................................66
4.1.3 Floppy Options ............................................................................................66
4.1.4 Primary IDE Master......................................................................................67
4.1.5 Primary IDE Slave .......................................................................................67
4.1.6 Secondary IDE Master.................................................................................67
4.1.7 Secondary IDE Slave...................................................................................67
4.1.8 Language ....................................................................................................67
4.1.9 Boot Options................................................................................................67
4.1.10 Video Mode .................................................................................................67
4.1.11 Mouse..........................................................................................................67
4.1.12 Base Memory...............................................................................................67
4.1.13 Extended Memory........................................................................................67
4.1.14 BIOS Version...............................................................................................67
4.1.15 Floppy A: .....................................................................................................68
4.1.16 Floppy B: .....................................................................................................68
4.1.17 Floppy A: Type ............................................................................................68
4.1.18 Floppy B: Type ............................................................................................68
4.1.19 Floppy Access .............................................................................................68
4.1.20 IDE Device Configuration ............................................................................68
4.1.21 Cylinders......................................................................................................69
4.1.22 Heads..........................................................................................................69
4.1.23 Sectors ........................................................................................................69
4.1.24 Maximum Capacity ......................................................................................69
4.1.25 IDE Translation Mode..................................................................................69
4.1.26 Multiple Sector Setting.................................................................................69
4.1.27 Fast Programmed I/O Modes.......................................................................70
4.1.28 First Boot Device .........................................................................................70
4.1.29 Second Boot Device....................................................................................70
4.1.30 Third Boot Device ........................................................................................70
4.1.31 Fourth Boot Device......................................................................................70
4.1.32 System Cache .............................................................................................71
4.1.33 Boot Speed..................................................................................................71
4.1.34 Num Lock ....................................................................................................71
4.1.35 Setup Prompt...............................................................................................71
4.1.36 Hard Disk Pre-Delay....................................................................................71
4.1.37 Typematic Rate Programming .....................................................................72
4.1.38 Typematic Rate Delay .................................................................................72
4.1.39 Typematic Rate............................................................................................72
4.1.40 Scan User Flash Area..................................................................................72
4.1.41 Power-On COM1 Ring.................................................................................73
4.2 Advanced Screen.......................................................................................................73
4.2.1 Processor Type............................................................................................73
4.2.2 Processor Speed .........................................................................................73
4.2.3 Cache Size ..................................................................................................73
4.2.4 Peripheral Configuration ..............................................................................73
4.2.5 Advanced Chipset Configuration .................................................................73
Contents
v
PD440FX Technical Product Specification
4.2.6 Power Management Configuration ..............................................................73
4.2.7 Plug and Play Configuration ........................................................................73
4.2.8 Event Logging Configuration .......................................................................73
4.2.9 Primary PCI IDE Interface............................................................................74
4.2.10 Secondary PCI IDE Interface.......................................................................74
4.2.11 Floppy Interface...........................................................................................74
4.2.12 Serial Port 1 Interface..................................................................................74
4.2.13 Serial Port 2 Interface..................................................................................74
4.2.14 Serial Port 2 IR Interface .............................................................................75
4.2.15 Parallel Port Interface ..................................................................................75
4.2.16 Parallel Port Type ........................................................................................75
4.2.17 USB Interface ..............................................................................................75
4.2.18 Audio Interface ............................................................................................75
4.2.19 Hardware Monitor Interface .........................................................................75
4.2.20 Primary PCI IDE Status ...............................................................................76
4.2.21 Secondary PCI IDE Status ..........................................................................76
4.2.22 Floppy Status...............................................................................................76
4.2.23 Serial Port 1 Status......................................................................................76
4.2.24 Serial Port 2 Status......................................................................................76
4.2.25 Parallel Port Status......................................................................................76
4.2.26 Base Memory Size.......................................................................................76
4.2.27 ISA LFB Size ...............................................................................................76
4.2.28 ISA LFB Base Address................................................................................76
4.2.29 Video Palette Snoop....................................................................................77
4.2.30 ISA VGA Write Combining...........................................................................77
4.2.31 Latency Timer (PCI Clocks).........................................................................77
4.2.32 Memory Error Detection...............................................................................77
4.2.33 Bank 0 .........................................................................................................77
4.2.34 Bank 1 .........................................................................................................77
4.2.35 Advanced Power Management....................................................................78
4.2.36 IDE Drive Power Down................................................................................78
4.2.37 VESA
†
Video Power Down ..........................................................................78
4.2.38 Inactivity Timer.............................................................................................78
4.2.39 Hot Key........................................................................................................78
4.2.40 Auto Start On AC Loss ................................................................................78
4.2.41 Configuration Mode .....................................................................................79
4.2.42 PnP OS........................................................................................................79
4.2.43 ISA Shared Memory Size ............................................................................79
4.2.44 ISA Shared Memory Base Address .............................................................80
4.2.45 IRQ 3, 4, 5, 7, 9, 10, 11, 14, 15 ...................................................................80
4.2.46 Event Log Capacity .....................................................................................80
4.2.47 Event Count Granularity ..............................................................................80
4.2.48 Event Time Granularity (Minutes) ................................................................81
4.2.49 Event Log Control........................................................................................81
4.2.50 Clear Event Log...........................................................................................81
4.2.51 Mark Existing Events As Read.....................................................................81
4.2.52 Event Log Subscreens ................................................................................81
vi
4.3 Security Screen..........................................................................................................82
4.3.1 User Password ............................................................................................83
4.3.2 Administrative Password..............................................................................83
4.3.3 Enter Password ...........................................................................................83
4.3.4 Set Administrative Password .......................................................................83
4.3.5 User Privilege Level.....................................................................................83
4.3.6 Clear User Password...................................................................................83
4.3.7 Unattended Start .........................................................................................84
4.3.8 Security Hot Key (CTRL-ALT-).....................................................................84
4.4 Exit Screen.................................................................................................................84
4.4.1 Exit Saving Changes ...................................................................................84
4.4.2 Exit Discarding Changes .............................................................................84
4.4.3 Load Setup Defaults ....................................................................................84
4.4.4 Discard Changes .........................................................................................84
5 Error Messages and Beep Codes
5.1 BIOS Beep Codes......................................................................................................85
5.2 PCI Configuration Error Messages.............................................................................86
5.3 BIOS Error Messages ................................................................................................87
5.4 ISA NMI Messages ....................................................................................................88
5.5 Port 80h POST Codes ...............................................................................................88
Contents
6 Specifications and Customer Support
6.1 Online Support...........................................................................................................93
6.2 Specifications.............................................................................................................93
Index
Figures
1. Motherboard Components .........................................................................................11
2. Motherboard Dimensions...........................................................................................12
3. Back Panel I/O Shield Dimensions (ATX Chassis-Dependent)..................................13
4. Back Panel I/O Shield Dimensions (ATX Chassis-Independent) ...............................14
5. Motherboard Connectors ...........................................................................................26
6. Front Panel I/O Connectors .......................................................................................32
7. Back Panel I/O Connectors........................................................................................36
8. Jumper Locations.......................................................................................................43
9. Thermally-sensitive Motherboard Components..........................................................47
Tables
1. SIMM Sizes and Configurations.................................................................................16
2. Memory Error-Detection Modes in the Setup Program ..............................................17
3. Audio Subsystem Resources .....................................................................................24
4. Telephony Connector (J2F1) .....................................................................................27
5. Telephony Connector (J2F3) .....................................................................................27
6. CD-ROM Audio Connector (J2F6) .............................................................................27
7. Line In Connector (J3F1) ...........................................................................................27
8. Wavetable Connector (J2F2) .....................................................................................27
9. Hard Disk LED (HDD LED) Header (J6F1).................................................................28
vii
PD440FX Technical Product Specification
10. Fan 1 Header (J9A1) .................................................................................................28
11. Fan 3 Header (J4F1)..................................................................................................28
12. Chassis Security Header (J6C1)................................................................................28
13. GP I/O Header (J10H1)..............................................................................................28
14. Yamaha Wavetable Module Connectors (J7C1 and J7D1) ........................................29
15. Floppy Drive Connector (J8H3)..................................................................................29
16. PCI IDE Connectors (J8H1, J8H2).............................................................................30
17. Power Supply Connector (J6M1) ...............................................................................31
18. Front Panel I/O Connectors (J9D1)............................................................................33
19. PS/2
†
Keyboard or Mouse Connectors (J1M1) ..........................................................37
20. USB Connectors (J1L1) .............................................................................................37
21. Serial Port Connectors (J1J1, J1K1) ..........................................................................37
22. Parallel Port Connector (J1J2) ...................................................................................38
23. Audio Line Out Connector (J1G1)..............................................................................38
24. Audio Line In Connector (J1G1).................................................................................38
25. Audio Mic In Connector (J1G1)..................................................................................38
26. MIDI / Game Port Connector(J1G1)...........................................................................39
27. PCI Bus Connectors ..................................................................................................40
28. ISA Bus Connectors...................................................................................................41
29. Jumper Settings.........................................................................................................43
30. Jumper Settings for Processor and Host Bus Frequencies ........................................44
31. Motherboard Environmental Specifications ................................................................45
32. Power Usage .............................................................................................................46
33. DC Voltage.................................................................................................................46
34. Thermal Considerations for Motherboard Components .............................................47
35. Memory Map..............................................................................................................51
36. DMA Channels...........................................................................................................51
37. I/O Map......................................................................................................................52
38. PCI Configuration Space Map....................................................................................54
39. Interrupts....................................................................................................................54
40. PCI Interrupt Routing Map .........................................................................................55
41. Recommendations for Configuring an ATAPI Device.................................................58
42. Overview of the Setup Screens..................................................................................64
43. Event Log Subscreens...............................................................................................81
44. Administrative and User Password Functions ............................................................82
45. Access for User Privilege Level Options ....................................................................83
46. Beep Codes ...............................................................................................................85
47. PCI Error Messages...................................................................................................86
48. BIOS Error Messages ................................................................................................87
49. NMI Error Messages ..................................................................................................88
50. Port 80h Codes..........................................................................................................88
51. Compliance with Specifications..................................................................................93
viii
1 Motherboard Description
1.1 Overview
The PD440FX motherboard has the following features:
Form factor
• ATX form factor
Microprocessor
• Single Pentium
• 256 or 512 KB second-level cache on the substrate in the Single Edge Contact (S.E.C.)
cartridge
• Slot 1 processor connector
Main memory
• Four 72-pin SIMM
• Support for up to 256 MB of extended data out (EDO) memory
• Support for nonparity, parity, or ECC DRAM
Chipset and PCI/IDE interface
• Intel 82440FX PCIset
• Integrated PCI bus mastering controller
• Two fast IDE interfaces
• Support for up to four IDE drives or devices
• Support for two universal serial bus (USB) interfaces
II processor operating at 233 or 266 MHz
†
sockets
I/O features
• National PC87307VUL Super I/O controller
• Integrates standard I/O functions: floppy drive interface, one multimode parallel port, two
FIFO serial ports, real-time clock, keyboard and mouse controller, IrDA-compatible interface
Six usable expansion slots:
• Two ISA slots
• Three PCI slots
• One shared PCI/ISA slot
Other features
• Intel/AMI BIOS
• Plug and Play compatible
• Advanced power management (APM)
Software drivers and utilities are available from Intel.
9
PD440FX Technical Product Specification
1.2 Motherboard Manufacturing Options
The following are manufacturing options:
• Audio subsystem
Yamaha OPL3-SA3 codec audio component
Yamaha OPL4-ML wavetable synthesizer component
Yamaha reference design module
• Management extension hardware
10
1.3 Motherboard Components
Motherboard Description
C
BA
G
H
F
IED
EE
J
K
DD
CC
L
M
BB
AA
Z
X S
Y
W
V
U
R
PQT
N
O
OM05640
Figure 1. Motherboard Components
A. ISA connectors L. Intel SB82441FX (PMC) V. Front panel header
B. Optional Yamaha OPL4-ML
component
C. Optional Yamaha OPL3-SA3
component
D. CD-ROM audio connector O. Battery Y. National PC87307VUL I/O
E. Telephony connector P. SIMM sockets Z. Fan 1 header
F. Wavetable header Q. IDE connectors AA. Optional Yamaha wavetable
G. Telephony connector R. GP I/O header BB. Chassis security header
H. Line In connector S. Floppy drive connector CC. Optional management
I. Back panel I/O connectors T. Hard disk LED (HDD LED)
J. Slot 1 processor connector U. Intel SB82371SB (PIIX3) EE. PCI connectors
K. Intel SB82442FX (DBX)
M. Power connector W. 2 Mbit TSOP flash device
N. Speaker X. Configuration jumper block
controller
module headers
extension hardware
DD. Fan 3 header
header
11
PD440FX Technical Product Specification
1.4 Form Factor
The motherboard is designed to fit into an ATX form factor chassis. Figure 2 illustrates the
mechanical form factor for the motherboard. Location of the I/O connectors and mounting holes
are in strict compliance with the ATX specification (see Section 6.2).
9.35
8.95
8.05
2.85
0.25
0.0
0.65
0.0
3.10 4.90
Figure 2. Motherboard Dimensions
11.35
11.10
OM05641
12
Motherboard Description
1.5 I/O Shield
The back panel I/O shield for the PD440FX motherboard must meet specific dimensional and
material requirements. Systems based on this motherboard need the back panel I/O shield in order
to pass certification testing. Figure 3 shows the critical dimensions of the chassis-dependent I/O
shield. Figure 4 shows the critical dimensions of the chassis-independent I/O shield. Both figures
indicate the position of each cutout. Additional design considerations for I/O shields relative to
chassis requirements are described in the ATX specification. See Section 6.2 for information about
the ATX specification.
NOTE
✏
An I/O shield specifically designed for the Intel ATX chassis is available from Intel.
4.610
1.590
0.295
0.458
1.955
0.133
0.597
0.200
0.478
1.407
0.768
1.158
0.671
0.395
0.553
0.990
1.911
2.184
3.327
4.735
0.193
Note: Material = 0.010 ±.0.001 Thick Stainless Steel, Half Hard
4.899
5.391
5.883
6.533
0.652
2.055
0.050
2.326
2.023
0.120
Left-end View
0.306 Dia (3)
0.666
OM05669
Figure 3. Back Panel I/O Shield Dimensions (ATX Chassis-Dependent)
13
PD440FX Technical Product Specification
NOTE
✏
A chassis-independent I/O shield designed to be compliant with the ATX chassis specification 2.01
is available from Intel.
0.039 Dia
0.945
0.279
0.00
0.472
0.464
0.685
0.945
0.00
0.134
0.442
0.911
Note: Material = 0.010 ±.0.001
Thick Stainless Steel, Half Hard
1.798
2.070
1.889
1.767
0.122
3.214
4.618
4.783
Right-end View
5.275
Figure 4. Back Panel I/O Shield Dimensions (ATX Chassis-Independent)
5.767
0.464
0.306 Dia (3)
6.255
OM05734
14
Motherboard Description
1.6 Microprocessor
The motherboard supports a single Pentium II processor operating at 2.1 V to 3.5 V. The
motherboard’s voltage regulator is automatically programmed by the processor’s VID pins to
provide the required voltage. The motherboard operates with processors that run internally at
233 or 266 MHz and have either a 256 KB or 512 KB second-level cache.
The processor implements the MMX technology and maintains full backward compatibility with
the 8086, 80286, Intel386, Intel486, Pentium processor, and Pentium Pro processors. The
processor’s numeric coprocessor significantly increases the speed of floating-point operations and
complies with ANSI/IEEE standard 754-1985.
1.6.1 Microprocessor Packaging
The processor is packaged in an S.E.C. cartridge. The S.E.C. cartridge includes the processor core,
the second-level cache, a thermal plate, and a back cover.
The processor connects to the motherboard through the Slot 1 processor connector, a 242-pin edge
connector. When the processor is mounted in Slot 1, it is secured by a retention mechanism
attached to the motherboard. The processor’s heat sink is stabilized by a heat-sink support that is
attached to the motherboard.
1.6.2 Second Level Cache
The second-level cache is located on the substrate of the S.E.C. cartridge. The cache includes burst
pipelined synchronous static RAM (BSRAM) and tag RAM. There can be two or four BSRAM
components totaling 256 KB or 512 KB in size. All supported onboard memory can be cached.
15
PD440FX Technical Product Specification
1.7 Main Memory
The motherboard has four SIMM sockets arranged in two banks: bank 0 and bank 1. Each bank
has two sockets and provides a 64/72-bit wide data path. SIMMs in the same bank must be the
same type (EDO, nonparity, parity, ECC), size, and speed; SIMMs in different banks may differ in
type, size, and speed. SIMMs must be installed in both sockets of a bank, and at least one bank
must be filled for the motherboard to work. The minimum memory size is 8 MB, and the
maximum size is 256 MB. The BIOS automatically detects memory type and size, so no jumper
settings are required.
The motherboard supports the following:
• 72-pin SIMM modules with tin-plated contacts only
• 50 ns or 60 ns DRAM speed only
• EDO SIMMs only
• Nonparity, parity, or ECC SIMMs
• 5 V-memory only
• Single- or double-sided SIMMs
The motherboard supports SIMMs in the following sizes:
Table 1. SIMM Sizes and Configurations
SIMM Size Nonparity Configuration Parity and ECC Configuration
4 MB 1 x 32 1 x 36
8 MB 2 x 32 2 x 36
16 MB 4 x 32 4 x 36
32 MB 8 x 32 8 x 36
64 MB 16 x 32 16 x 36
1.7.1 EDO DRAM
EDO DRAM improves memory-read performance by holding the memory data valid until the next
falling edge of the CAS# signal. With EDO DRAM, the CAS# precharge overlaps the data-valid
time, which allows the CAS# signal to negate earlier while still satisfying the memory data-valid
window.
16
Motherboard Description
1.7.2 Parity/ECC DRAM
Memory error checking and correction supports the following operations:
• Parity memory operationdetects single-bit errors but does not correct the errors.
• Error checking and correcting (ECC) operationdetects single-bit and double-bit errors, and
corrects single-bit errors.
Use parity and ECC memory as follows:
• Parity and ECC SIMMs must not be mixed in the same bank.
• The 82441FX (PMC) memory controller automatically detects the presence of parity and ECC
SIMMs (36-bit modules) and treats them identically.
• Parity and ECC operations are supported with parity or ECC SIMMs.
• Use the Setup program to enable parity or ECC support. See Section 4.2.32 for information
about enabling parity or ECC support.
• If any nonparity SIMMs are installed, the memory operates in nonparity mode only. The Setup
options for selecting parity or ECC mode do not appear.
The following table describes the effect of using Setup to put each memory type in each supported
mode. Whenever ECC mode is selected in Setup, some loss in memory performance occurs.
Table 2. Memory Error-Detection Modes in the Setup Program
SIMM Type Disabled Parity ECC
Nonparity SIMMs No error detection N/A N/A
Parity SIMMs No error detection Single-bit error detection Single-bit error correction,
double-bit error detection
ECC SIMMs No error detection Single-bit error detection Single-bit error correction,
double-bit error detection
17
PD440FX Technical Product Specification
1.8 Chipset
The Intel 82440FX PCIset consists of the 82441FX PCI bridge and memory controller (PMC) and
the 82442FX data bus accelerator (DBX). The Intel 82371SB PCI ISA/IDE Xccelerator (PIIX3)
bridge provides the connection between the ISA and PCI buses.
1.8.1 82441FX PCI Bridge and Memory Controller (PMC)
The PMC provides bus-control signals and address paths for transfers between the host bus, PCI
bus, and main memory. During host-to-PCI cycles, the PMC controls the PCI protocol. The PMC
also receives addresses from PCI bus initiators for PCI-to-DRAM transfers. The 82441FX comes
in a 208-pin PQFP package and provides the following features:
• Microprocessor interface control
Processor host bus speed up to 66 MHz
32-bit addressing
• Integrated DRAM controller
64/72-bit noninterleaved path to memory with ECC support
Support for EDO DRAM
8 MB to 256 MB main memory
• Fully-synchronous PCI bus interface
Compliant with the PCI specification revision 2.1 (see Section 6.2)
33 MHz PCI-bus speed
PCI-to-DRAM speed greater than 100 MB/sec
• Data Buffering
Host-to-DRAM and PCI-to-DRAM write-data buffering
Write-combining support for host-to-PCI burst writes
1.8.2 82442FX Data Bus Accelerator (DBX)
The DBX connects to the 64-bit processor data bus, the 64/72 bit memory-data bus, and the 16-bit
PMC private-data bus. The DBX works in parallel with the PMC to provide a high-performance
memory subsystem. The DBX comes in a 208-pin PQFP package.
1.8.3 82371SB PCI/ISA IDE Xccelerator (PIIX3)
The PIIX3 provides the interface between the PCI and ISA buses. The 82371SB integrates a busmaster, dual-channel fast-IDE interface capable of supporting up to four devices, a USB host/hub
controller, and many of the functions of ISA-based PC systems. The PIIX3 comes in a 208-pin
PQFP package and provides the following features:
• Interface between the PCI bus and ISA bus that is fully-compatible with ISA bus master and
slave interface
• Integrated fast IDE interface
Support for up to four devices with separate master/slave mode support
PIO Mode 4 transfers up to 16 MB/sec
Integrated 8 x 32-bit buffer for bus-master IDE PCI burst transfers
18
• Universal serial bus (USB)
Host/hub controller
Support for two USB ports
• Enhanced DMA controller
Four 8-bit DMA channels
Three 16-bit DMA channels
Compatible and fast type-F DMA transfers
• Interval Timer
Three 8-bit timer/counters
• Interrupt Controller
Two eight-channel interrupt controllers
PCI-to-AT interrupt mapping circuitry
ISA refresh address generation
PCI/ISA bus arbitration circuitry
NMI logic
• Power Management
Programmable system management interrupt (SMI)
Motherboard Description
1.8.4 Universal Serial Bus (USB) Support
The motherboard features two USB ports that permit the direct connection of two USB peripherals,
one to each port. For more than two USB devices, an external hub can be connected to either of
the built-in ports. The motherboard fully supports the universal host controller interface (UHCI)
and uses software drivers that are UHCI-compatible. See Section 6.2 for information about the
USB specification. Features of USB include:
• Self-identifying peripherals that can be hot-plugged
• Automatic mapping of function to driver and configuration
• Support for isochronous and asynchronous transfer types over the same set of wires
• Support for up to 127 physical devices
• Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other
applications
• Error-handling and fault-recovery mechanisms built into the protocol
NOTE
✏
Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class
B requirements, even if no device or a low-speed (sub-channel) USB device is attached to the
cable. Use shielded cable that meets the requirements for high-speed (fully-rated) devices.
19
PD440FX Technical Product Specification
1.8.5 IDE Support
The motherboard has two independent bus-mastering PCI IDE interfaces that support PIO Mode 3,
PIO Mode 4, and ATAPI devices (e.g., CD-ROM). The BIOS supports logical block addressing
(LBA) and extended cylinder head sector (ECHS) translation modes. IDE device transfer rate and
translation mode are automatically detected by the BIOS.
Usually programmed I/O operations require a substantial amount of processor bandwidth.
However, in multitasking operating systems, the bandwidth freed by bus mastering IDE can be
devoted to other tasks while disk transfers are occurring.
1.9 Super I/O Controller
The PC87307 Super I/O Controller from National Semiconductor is an ISA Plug and Play
compatible (see Section 6.2), multifunction I/O device that provides the following features:
• Serial ports:
Two 16450/16550A-software compatible UARTs
Internal send/receive 16-byte FIFO buffer
Four internal 8-bit DMA options for the UART with SIR support (USI)
• Multimode bidirectional parallel port
Standard mode, IBM and Centronics compatible
Enhanced parallel port (EPP) mode with BIOS and driver support
High-speed extended capabilities port (ECP) mode
• Floppy disk controller
DP8473 and N82077 compatible
16-byte FIFO
PS/2
High-performance digital data separator (DDS)
PC-AT
• Keyboard and mouse controller
Industry standard 8042A compatible
General-purpose microcontroller
8-bit internal data bus
• Real-time clock
DS1287 and MC146818 compatible
Accurate within ± 13 minutes/year at 25 ºC with 5 V applied
Includes advanced power control (APC)
• Support for an IrDA and Consumer IR-compliant infrared interface
†
diagnostic-register support
†
and PS/2 drive-mode support
By default, the I/O controller interfaces are automatically configured during boot up. The I/O
controller can also be manually configured in the Setup program.
20
Motherboard Description
1.9.1 Serial Ports
The motherboard has two 9-pin D-Sub serial port connectors located on the back panel. The 16450
and 16550A compatible UARTs support data transfers at speeds up to 921.6 Kbaud, while the
extended UART mode supports data rates up to 1.5 Mbaud.
1.9.2 Parallel Port
The connector for the multimode bidirectional parallel port is a 25-pin D-Sub connector located on
the back panel of the motherboard. In the Setup program, the parallel port can be configured for
the following:
• Compatible (standard mode)
• Bidirectional (PS/2 compatible)
• Bidirectional EPP
• Bidirectional ECP
1.9.3 Floppy Controller
The I/O controller is software compatible with the DP8473 and N82077 floppy drive controllers
and supports both PC-AT and PS/2 modes. In the Setup program, the floppy interface can be
configured for the following floppy drive capacities and sizes:
• 360 KB, 5.25-inch
• 1.2 MB, 5.25-inch
• 720 KB, 3.5-inch
• 1.2 MB, 3.5-inch (driver required)
• 1.25/1.44 MB, 3.5-inch
• 2.88 MB, 3.5-inch
1.9.4 Keyboard and Mouse Interface
PS/2 keyboard and mouse connectors are located on the back panel of the motherboard. The 5 V
lines to these connectors are protected with a PolySwitch
reestablishes the connection after an over-current condition is removed. While this device
eliminates having to replace a fuse, power to the computer should be turned off before connecting
or disconnecting a keyboard or mouse.
NOTE
✏
You can plug the mouse and keyboard into either of the PS/2 connectors.
The keyboard controller contains the AMI Megakey keyboard and mouse controller code, provides
the keyboard and mouse control functions, and supports password protection for power on/reset. A
power on/reset password can be specified in the Setup program.
†
circuit that, like a self-healing fuse,
21
PD440FX Technical Product Specification
The keyboard controller also supports the following hot-key sequences:
• <Ctrl><Alt><Del>: Software reset. This key sequence resets the computer’s software by
jumping to the beginning of the BIOS code and running the power-on self test (POST).
• <Ctrl><Alt><defined in Setup>: Power management. This key sequence invokes powermanaged mode, which reduces the computer’s power consumption while maintaining its ability
to service external interrupts.
• <Ctrl><Alt><defined in Setup>: Keyboard lock. This key sequence is a security feature that
locks the keyboard until the user password is entered. When keyboard lock is invoked, the
keyboard LEDs flash. To enable the keyboard-lock feature, a user password must be specified
in the Setup program.
1.9.5 Real-time Clock, CMOS RAM, and Battery
The real-time clock is compatible with DS1287 and MC146818 components. The clock provides a
time-of-day clock and a multicentury calendar with alarm features and century rollover. The realtime clock supports 242 bytes of battery-backed CMOS RAM in two banks that are reserved for
BIOS use.
The time, date, and CMOS values can be specified in the Setup program. The CMOS values can
be returned to their defaults by using the Setup program or by setting a configuration jumper on the
motherboard.
An external coin-cell battery powers the real-time clock and CMOS memory. When the computer
is not plugged into a wall socket, the battery has an estimated life of three years. When the
computer is plugged in, the 5 V standby current from the motherboard’s power supply extends the
life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 5 V applied.
1.9.6 Infrared Support
The motherboard has 6 pins located on the front panel I/O connector that support Hewlett Packard
HSDL-1000 compatible infrared (IR) transmitters and receivers. In the Setup program, Serial
Port 2 can be directed to a connected IR device. The connection can be used to transfer files to or
from portable devices like laptops, PDAs and printers. The Infrared Data Association (IrDA)
specification supports data transfers of 115 Kbaud at a distance of 1 meter. See Section 6.2 for
information about the IrDA specification.
1.9.6.1 Consumer Infrared Support
The motherboard has a dedicated signal pin located on the front panel I/O connector that supports
consumer infrared devices (remote controls). The signal pin supports receive only. Consumer
infrared devices can be used to control telephony functions and multimedia operations such as
volume and CD track changes. In this mode, data rates of up to 685.57 Kbaud are supported. A
software and hardware interface is needed to use this feature.
22
Motherboard Description
1.10 Audio Subsystem
1.10.1 OPL3 Audio System
The onboard audio subsystem features the Yamaha OPL3-SA3 (YMF715) device. The features of
the device include the following:
• A 16-bit audio codec
• OPL3 FM synthesis
• An integrated 3-D enhanced stereo controller including all required analog components
• An interface for MPU-401 and a joystick
• Stereo analog-to-digital and digital-to-analog converters
• Analog mixing, anti-aliasing, and reconstruction filters
• Support for 16-bit address decoding
• Line, microphone, and monaural inputs
• ADPCM, A-law, or µlaw digital audio compression and decompression
• Full digital control of all mixer and volume control functions
• Software switching between rear panel Mic In and Line In connectors
• Plug and Play compatibility
• Sound Blaster
†
Pro and Windows Sound System compatibility
1.10.2 OPL4-ML Wavetable Synthesizer
The optional onboard Wavetable synthesizer features the single-chip OPL4-ML (YMF704). The
OPL4-ML integrates the OPL3 audio system, general MIDI processor, and Wavetable ROM into a
single component. The features of the device include the following:
• Complies with general MIDI system 1
• Interface compatible with MPU-401 UART mode
• FM synthesis compatible with the OPL3 audio system
• Wavetable synthesis generates up to 24 voices simultaneously
• 100-pin SQFP package (YMF704-S)
NOTE
✏
An optional OPL4-ML reference design module that can be plugged into the board may be
licensed from Yamaha Corporation.
1.10.3 Audio Subsystem Resources
The following table shows the IRQ, DMA channel, and base I/O address options for the audio
subsystem. Options are listed in order of preference specified by Yamaha. These options are
automatically chosen by the Plug and Play interface, so there are no default settings. Onboard
audio can be enabled or disabled in the Setup program.
23
PD440FX Technical Product Specification
Table 3. Audio Subsystem Resources
IRQ
Resource
Sound Blaster
(DMA playback, DMA shared with Windows
Sound System capture)
Windows Sound System
(DMA playback)
MPU-401
(IRQ shared with Sound Blaster)
MIDI / Game Port 201h
†
AdLib
(Options)
10
7
5,7,9,10,11
5
11
5,7,9,10,11
DMA Channel
(Options)
1
0,1,3
0
0,1,3
1.10.4 Audio Drivers and Utilities
Audio software and utilities are available from Intel’s World Wide Web site (see Section 6.1).
Audio driver support is provided for Microsoft Windows
†
Windows NT
(versions 3.51 and 4.0), and IBM OS/2† Warp (versions 3.0 and 4.0) operating
systems.
†
3.1, Microsoft Windows 95, Microsoft
I/O Address
(Options)
220h
240h
220-280h
530h
E80h
530-F48h
330h
300h
300-334h
201-20Fh
388h
388-3F8h
1.10.5 Audio Connectors
Audio connectors include the following:
• Back panel audio jacks (Line In, Line Out, Mic In)
• CD-ROM audio connector
• Telephony connectors (a 1 x 4 pin and a 2 x 2 pin)
• Line In connector
• Wavetable connector
1.10.5.1 CD-ROM Audio Connector
A 1 x 4-pin connector is available for connecting an internal CD-ROM drive to the audio
subsystem’s mixer. The connector is compatible with most cables supplied with ATAPI CD-ROM
drives designed to connect to audio add-in cards.
1.10.5.2 Telephony Connectors
Telephony support is available for connecting the monaural audio signals of an internal telephony
device to the motherboard’s audio subsystem. A monaural audio-in and audio-out signal interface
is necessary for telephony applications such as speakerphones, fax/modem, and answering
machines. Two different interface headers are available for this application: a general telephony
interface with a 1 x 4-pin ATAPI type connector and a telephony interface with a 2 x 2-pin header.
See Section 1.12 for connector reference numbers and pinouts.
24
Motherboard Description
1.10.5.3 Line In Connector
The Line In connector is available for connecting left and right channel signals of an internal audio
device to the motherboard’s audio subsystem. An audio-in signal interface of this type is necessary
for applications such as TV tuners. A general audio interface is provided with a 1 x 4-pin ATAPI
type connector. See Section 1.12 for connector reference numbers and pinouts.
1.10.5.4 Hardware Wavetable Connector
A 2 x 4-pin header supports wavetable add-in cards. Most wavetable add-in cards are installed in a
standard ISA slot, and a cable is then routed from the card to this header.
Compatible wavetable cards are available from several vendors. The ICS WaveFront and the
CrystaLake Series 2000 wavetable product families offer general MIDI-compatible audio
operation.
1.11 Management Extension Hardware
The optional management extension hardware provides low-cost instrumentation capabilities
designed to reduce the total cost of owning a PC. The hardware implementation is a single-chip
ASIC. Features include:
• An integrated temperature sensor
• Fan speed sensors for up to three fans
• Power supply voltage monitoring to detect levels above or below acceptable values
• Header for an external chassis-security feature
See Section 6.2 for information about where to get the specification for the management extension
hardware.
NOTE
✏
When suggested ratings for temperature, fan speed, or voltage are exceeded, an interrupt is
activated.
1.11.1 Chassis Security Header (J6C1)
The PD440FX motherboard supports the chassis-security feature of the management extension
hardware by means of a mechanical switch attached to the motherboard through a 1 x 2-pin chassis
security header (J6C1). The mechanical switch is open for normal computer operation. See
Section 1.12 for chassis security header pinouts.
1.11.2 GP I/O Header
This header is not supported by the standard PD440FX BIOS. See the pinouts for this header on
page 28.
25
PD440FX Technical Product Specification
1.12 Motherboard Connectors
The following figure shows the connectors on the motherboard.
2
Telephony
J4F1
1
Fan 3
Chassis
Security
Yamaha
Wavetable
Module
J2F1
13
PCI
Connectors(4)
J4C1, J4D1
J4E1, J4E2
ISA
Connectors(3)
J4A1, J4B1
J4B2
3
J6C1
12
1
J7C1
J2F3
1
4
Telephony
J2F6
14
CD-ROM Audio
J3F1
14
Line In
Sec
Pri
Wavetable
2
1
8
7
J2F2
Slot 1
Processor
Card Connector
J4A1
J6M1
11
20
Power
Bank 0 DRAM
(J6J1, J6J2)
Bank 1 DRAM
(J7J1, J7J2)
1
10
J9A1
1
Fan 1
Yamaha
Wavetable
Module
J9D1
27
3
1
J7D1
J6F1
Hard Disk LED
(HDD LED)
12
J8H3
234
1335
Floppy
2
139
J10H1
18
GP I/O
1
PCI IDE(2)
4020
J8H1
J8H2
Front Panel I/O Connectors
OM05645
Figure 5. Motherboard Connectors
26
Table 4. Telephony Connector (J2F1)
Pin Signal Name
1 Ground
2 MONO_IN (from external device)
3 MONO_OUT (to external device)
4 Key
Table 5. Telephony Connector (J2F3)
Pin Signal Name
1 MONO_IN (from external device)
2 Ground
3 Ground
4 MONO_OUT (to external device)
Table 6. CD-ROM Audio Connector (J2F6)
Motherboard Description
Pin Signal Name
1 Ground
2 CD_IN-Left
3 Ground
4 CD_IN-Right
Table 7. Line In Connector (J3F1)
Pin Signal Name
1 Left Line In
2 Ground
3 Ground
4 Right Line In (monaural)
Table 8. Wavetable Connector (J2F2)
Pin Signal Name Pin Signal Name
1 Wave In Right 2 Ground
3 Wave In Left 4 Ground
5 Key 6 Ground
7 Not connected 8 MIDI Out (from Host)
Note: This connector is a 2 x 4 male, 0.100” centerline stake header with 0.025” square pins. The mating connector is a
Berg 71600-308 or equivalent.
27
PD440FX Technical Product Specification
Table 9. Hard Disk LED (HDD LED) Header
(J6F1)
Pin Signal Name
1 DRV_ACT#
2 No connect
Table 10. Fan 1 Header (J9A1)
Pin Signal Name
1 Ground
2 +12 V
3 FAN_SEN
Table 11. Fan 3 Header (J4F1)
Pin Signal Name
1 Ground
2 +12 V
3 FAN_SEN
Table 12. Chassis Security Header (J6C1)
Pin Signal Name
1 Ground
2 CHS_SEC
Table 13. GP I/O Header (J10H1)
Pin Signal Name
1 Vcc
2 Key
3 GP1_7
4 Ground
5 GP1_2
6 Ground
7 GP1_1
8 Ground
28
Motherboard Description
Table 14. Yamaha Wavetable Module Connectors (J7C1 and J7D1)
Connector (J7D1) Connector (J7C1)
Pin Signal Name Pin Signal Name
1 EXTEN# 1 RSTDRV
2 SIN 2 Vcc
3 Vcc 3 AUD33MHZ
4 Ground 4 MIDI Out
5 BCK 5 Ground
6 LACK 6 Key
Note: There are two 2 x 3 headers in a standard position to connect to the Yamaha wavetable module.
Table 15. Floppy Drive Connector (J8H3)
Pin Signal Name Pin Signal Name
1 Ground 2 DENSEL
3 Ground 4 Reserved
5 Key 6 FDEDIN
7 Ground 8 FDINDX# (Index)
9 Ground 10 FDM00# (Motor Enable A)
11 Ground 12 FDDS1# (Drive Select B)
13 Ground 14 FDDS0# (Drive Select A)
15 Ground 16 FDM01# (Motor Enable B)
17 MSEN1 18 FDDIR# (Stepper Motor Direction)
19 Ground 20 FDSTEP# (Step Pulse)
21 Ground 22 FDWD# (Write Data)
23 Ground 24 FDWE# (Write Enable)
25 Ground 26 FDTRK0# (Track 0)
27 MSEN0 28 FDWPD# (Write Protect)
29 Ground 30 FDRDATA# (Read Data)
31 Ground 32 FDHEAD# (Side 1 Select)
33 Ground 34 DSKCHG# (Diskette Change)
29
PD440FX Technical Product Specification
Table 16. PCI IDE Connectors (J8H1, J8H2)
Pin Signal Name Pin Signal Name
1 Reset IDE 2 Ground
3 Data 7 4 Data 8
5 Data 6 6 Data 9
7 Data 5 8 Data 10
9 Data 4 10 Data 11
11 Data 3 12 Data 12
13 Data 2 14 Data 13
15 Data 1 16 Data 14
17 Data 0 18 Data 15
19 Ground 20 Key
21 DDRQ0 [DDRQ1] 22 Ground
23 I/O Write# 24 Ground
25 I/O Read# 26 Ground
27 IORDY 28 P_ALE [S_ALE](Cable Select pullup)
29 DDACK0# [DDACK1#] 30 Ground
31 IRQ 14 [IRQ 15] 32 Reserved
33 Address 1 34 Reserved
35 Address 0 36 Address 2
37 Chip Select 1P# [Chip Select 1S#] 38 Chip Select 3P# [Chip Select 3S#]
39 Activity# 40 Ground
Note: Signal names in brackets ([ ]) are for the secondary IDE connector.
30
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