Intel KU440EX User Manual

KU440EX Motherboard

Technical Product Specification

May 1998 Order Number 704768-001

The KU440EX 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 KU440EX Motherboard Specification Update.

Revision History

Revision Revision History Date

001 Final release of the KU440EX Motherboard Technical Product

Specification.

This product specification applies only to standard KU440EX motherboards with BIOS identifier 4K4UE0X0.86A.000X.P0X.

Changes to this specification will be published in the KU440EX Motherboard Specification Update before being incorporated into a revision of this document.

April 1998

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 KU440EX 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. 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 5937 Denver, CO 80217-9808

or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777, Germany 44-0-1793-421-333, other Countries 708-296-9333.

†

Brand, name or trademark owned by another company.

1 Motherboard Description

1.1 Overview .....................................................................................................................7

1.2 Manufacturing Options ................................................................................................ 8

1.3 Motherboard Components........................................................................................... 9

1.4 Form Factor................................................................................................................10

1.5 I/O Shield...................................................................................................................11

1.6 Microprocessor...........................................................................................................12

1.6.1 Microprocessor Packaging...........................................................................12

1.6.2 Second Level Cache....................................................................................12

1.6.3 Microprocessor Upgrades............................................................................12

1.7 Main Memory..............................................................................................................13

1.8 Chipset.......................................................................................................................13



1.8.1 Intel

1.8.2 Intel

1.9 I/O Interface Controller...............................................................................................17

1.9.1 Serial Ports ..................................................................................................17

1.9.2 Infrared Support...........................................................................................18

1.9.3 Parallel Port..................................................................................................18

1.9.4 Diskette Drive Controller ..............................................................................18

1.9.5 PS/2 Keyboard and Mouse Interface............................................................19

1.10 Audio Subsystem........................................................................................................19

1.10.1 Crystal Semiconductor CS4235 Audio Codec..............................................19

1.10.2 Audio Connectors.........................................................................................19

1.10.3 Audio Drivers and Utilities ............................................................................19

1.11 Graphics Subsystem ..................................................................................................20

1.11.1 ATI Rage IIC Controller................................................................................20

1.11.2 ATI Rage Pro 1X AGP (Optional).................................................................20

1.12 LAN Subsystem..........................................................................................................20

1.12.1 Intel

1.13 Wake on LAN Technology..........................................................................................21

1.14 Hardware Monitor Subsystem ....................................................................................22

1.15 Fan Speed Control .....................................................................................................22

1.15.1 Fan Header..................................................................................................22

1.15.2 Fan Control Signal on the Riser ...................................................................22

1.15.3 System Management Support......................................................................23

1.16 Motherboard Connectors............................................................................................24

1.16.1 Power Supply Connector..............................................................................26

1.16.2 Back Panel Connectors................................................................................27

1.17 NLX Card Edge Connector.........................................................................................31

1.18 Jumper Settings .........................................................................................................39

1.19 Reliability....................................................................................................................40

82443EX PCI/A.G.P. Controller (PAC)...............................................14



82371EB PCI ISA IDE Xcelerator (PIIX4E).........................................15

82558 LAN Controller.........................................................................21

iii

KU440EX Motherboard Technical Product Specification

1.20 Environmental Specifications......................................................................................40

1.21 Power Consumption...................................................................................................41

1.22 Thermal Considerations..............................................................................................41

1.23 Regulatory Compliance ..............................................................................................43

2 Motherboard Resources

2.1 Memory Map ..............................................................................................................45

2.2 DMA Channels ...........................................................................................................45

2.3 I/O Map ......................................................................................................................46

2.4 PCI Configuration Space Map ....................................................................................47

2.5 Interrupts....................................................................................................................47

2.6 PCI Interrupt Routing Map..........................................................................................48

3 Overview of BIOS Features

3.1 BIOS Upgrades ..........................................................................................................49

3.2 BIOS Flash Memory Organization..............................................................................50

3.3 Plug and Play: PCI Autoconfiguration........................................................................50

3.4 PCI IDE Support.........................................................................................................51

3.5 ISA Plug and Play.......................................................................................................51

3.6 ISA Legacy Devices ...................................................................................................51

3.7 System Management BIOS (SMBIOS).......................................................................52

3.8 Advanced Power Management (APM)........................................................................52

3.9 Advanced Configuration and Power Interface (ACPI).................................................53

3.9.1 System States and Power States.................................................................53

3.9.2 Wake Up Devices and Events......................................................................54

3.9.3 Plug and Play...............................................................................................54

3.9.4 BIOS Support...............................................................................................55

3.10 Language Support......................................................................................................55

3.11 Boot Options...............................................................................................................55

3.12 OEM Logo or Scan Area ............................................................................................55

3.13 USB Legacy Support..................................................................................................56

3.14 BIOS Setup Access....................................................................................................56

3.15 Recovering BIOS Data ...............................................................................................56

4 BIOS Setup Program

4.1 Maintenance Menu.....................................................................................................58

4.2 Main Menu..................................................................................................................58

4.3 Advanced Menu..........................................................................................................59

4.3.1 Peripheral Configuration Submenu...............................................................60

4.3.2 IDE Configuration.........................................................................................61

4.3.3 IDE Configuration Submenus.......................................................................62

4.3.4 Floppy Options Submenu.............................................................................63

4.3.5 DMI Event Logging.......................................................................................63

4.3.6 Video Configuration Submenu......................................................................63

4.3.7 Resource Configuration Submenu................................................................64

4.4 Security Menu ............................................................................................................64

4.5 Power Menu...............................................................................................................65

4.6 Boot Menu..................................................................................................................65

4.6.1 Hard Drive Submenu....................................................................................66

4.6.2 Removable Devices Submenu.....................................................................66

4.7 Exit Menu ...................................................................................................................67

5 Error Messages and Beep Codes

5.1 BIOS Error Messages.................................................................................................69

5.2 Port 80h POST Codes................................................................................................71

5.3 BIOS Beep Codes......................................................................................................76

6 Specifications and Customer Support

6.1 Online Support ...........................................................................................................77

6.2 Specifications .............................................................................................................77

Figures

1. Motherboard Components........................................................................................... 9

2. Motherboard Dimensions............................................................................................10

3. Back Panel I/O Shield Dimensions.............................................................................11

4. Motherboard Connectors............................................................................................24

5. Back Panel I/O Connectors ........................................................................................27

6. Location of the Configuration Jumper Block ...............................................................39

7. Thermally-Sensitive Components...............................................................................42

Contents

Tables

1. Fan Speed Control under APM OS.............................................................................23

2. Fan Speed Control under ACPI OS............................................................................23

3. Serial Port B Header (J5J1)........................................................................................25

4. Microphone Routing Jumper (J8K2)...........................................................................25

5. CD Audio (J8J1).........................................................................................................25

6. Fan Connector (J1A1)................................................................................................25

7. Power Supply Connector............................................................................................26

8. Audio Mic In Connector (J8K1)..................................................................................28

9. Audio Line Out Connector (J7K1)..............................................................................28

10. Stacked USB Connectors (J6K2)................................................................................28

11. PS/2 Keyboard/Mouse Connectors (J5K1, J6K1).......................................................28

12. RJ-45 LAN Connector (J4K1).....................................................................................29

13. Serial Port A Connector (J3K1) ..................................................................................29

14. Video Connector (J1K1) .............................................................................................29

15. Parallel Port Connector (J2K1)...................................................................................30

16. PCI Segment, Riser Interconnect ...............................................................................31

17. ISA Segment, Riser Interconnect ...............................................................................33

18. IDE, Floppy, and Front Panel Section, Riser Interconnect..........................................34

19. Signals, NLX Riser with Supplemental Connector ......................................................37

20. Configuration Jumper Settings ...................................................................................39

21. Environmental Specifications......................................................................................40

22. Power Usage..............................................................................................................41

23. Thermal Considerations for Components ...................................................................42

24. Processor Fan DC Power Requirements (J1A1).........................................................43

KU440EX Motherboard Technical Product Specification

25. Safety Regulations .....................................................................................................43

26. EMC Regulations........................................................................................................43

27. Memory Map ..............................................................................................................45

28. DMA Channels ...........................................................................................................45

29. I/O Map ......................................................................................................................46

30. PCI Configuration Space Map ....................................................................................47

31. Interrupts....................................................................................................................47

32. PCI Interrupt Routing Map..........................................................................................48

33. Flash Memory Organization........................................................................................50

34. Recommendations for Configuring an ATAPI Device..................................................51

35. Effects of Pressing the Power Switch.........................................................................53

36. Power States and Targeted System Power................................................................54

37. Wake Up Devices and Events ....................................................................................54

38. Setup Menu Bar .........................................................................................................57

39. Setup Function Keys ..................................................................................................57

40. Maintenance Menu.....................................................................................................58

41. Main Menu..................................................................................................................58

42. Advanced Menu..........................................................................................................59

43. Peripheral Configuration Submenu.............................................................................60

44. IDE Configuration.......................................................................................................61

45. IDE Configuration Submenus .....................................................................................62

46. Floppy Options Submenu...........................................................................................63

47. DMI Event Logging Submenu.....................................................................................63

48. Video Configuration Submenu....................................................................................63

49. Resource Configuration Submenu..............................................................................64

50. Security Menu ............................................................................................................64

51. Power Menu...............................................................................................................65

52. Boot Menu..................................................................................................................65

53. Hard Drive Submenu..................................................................................................66

54. Removable Devices Submenu....................................................................................66

55. Exit Menu ...................................................................................................................67

56. BIOS Error Messages.................................................................................................69

57. Port 80h Codes ..........................................................................................................71

58. Beep Codes................................................................................................................76

59. Compliance with Specifications ..................................................................................77

1 Motherboard Description

1.1 Overview

The KU440EX motherboard is a versatile platform that offers a wide variety of features. Many of the options, however, are implemented – at least in part – on the riser. Throughout this manual,

‡

symbol is used to indicate such an option. Because there is no standard riser, no detailed

the description of an implementation can be given. See Section 6.1 to obtain the reference design for the NLX riser.

The KU440EX motherboard uses the NLX form factor (8.25 x 10.0 inches) and has the following features:

Microprocessor:



• Single Pentium



• Intel

• 66 MHz host bus speed

• Slot 1 connector which provides an upgrade path that includes higher performance processors

Main memory:

• Two 168-pin DIMM sockets

• Supports from 8 MB up to 256 MB of synchronous DRAM (SDRAM) memory

Intel

• Intel 82443EX PCI/A.G.P. controller (PAC)

• Intel 82371EB PCI ISA IDE Xcelerator (PIIX4E)

Celeron processor operating at 266 MHz



82440EX AGPset and PCI/IDE Interface

 Integrated PCI bus mastering controller  Integrated Accelerated Graphics Port (A.G.P.) controller

 Supports up to four IDE drives or devices  Multifunction PCI-to-ISA bridge  Universal Serial Bus (USB) and DMA controllers  Two fast IDE interfaces  Power management logic  Real-time clock

II processor operating at 233, 266, 300, or 333 MHz

I/O features:

• SMC FDC37M707QFP I/O controller  Integrates standard I/O functions

• Two USB ports

Audio subsystem:

• Crystal Audio 4235 ISA controller

KU440EX Motherboard Technical Product Specification

Graphics subsystem

†

• ATI Rage

IIC A.G.P. controller

• 2 or 4 MB SGRAM

Expansion slots

• Riser dependent

Other features

• Plug and Play compatible

• Support for Advanced Power Management (APM)

• Advanced Configuration and Power Management Interface (ACPI) ready

• Support for WfM 1.1a

• Support for Management Level 3.0

1.2 Manufacturing Options

The following is a list of manufacturing options. Not all manufacturing options are available in all marketing channels. Please contact your Intel representative to determine which options are available to you.

• ATI Rage Pro Turbo A.G.P. controller

• 4 MB SGRAM

1.3 Motherboard Components

Motherboard Description

B C

D E

K I HJ

A Back panel connectors G Configuration jumper B Microphone routing jumper H Battery C COM2 header I Piezoelectric speaker D CD-ROM audio connector J Slot 1 connector E NLX edge connector (supplemental) K Processor fan connector F NLX edge connector L DIMM sockets

Figure 1. Motherboard Components

OM07101

KU440EX Motherboard Technical Product Specification

1.4 Form Factor

The motherboard is designed to fit into a or a full NLX form-factor chassis. The outer dimensions are 8.25 x 10.0 inches. (Full NLX dimensions are 9.0 x 13.0 inches.) Figure 2 shows that the mechanical form factor, the I/O connector locations, and the mounting hole locations are in compliance with the NLX specification (see Section 6.2).

0.00

0.60

0.00

0.349

0.509

2.975

9.40

9.20

8.05

7.60

4.20

Figure 2. Motherboard Dimensions

5.159

9.234

0.20

OM07103

Motherboard Description

1.5 I/O Shield

The back panel I/O shield for the motherboard must meet specific dimension and material requirements. Systems based on this motherboard need the back panel I/O shield to pass certification testing. Figure 3 shows the critical dimensions of the chassis-dependent I/O shield. The figure indicate the position of each cutout. Additional design considerations for I/O shields relative to chassis requirements are described in the NLX specification. See Section 6.2 for information about the NLX specification.

NOTE

✏

A chassis-independent I/O shield designed to be compliant with the NLX specification 1.2 is available from Intel.

0.948

0.456

0.00

0.168

0.00

0.570

2.504

1.838

1.175

0.366(2) 0.240

3.179

5.532

4.165

5.997

7.274

7.429

1.752

1.197

0.447

0.143

8.853

Figure 3. Back Panel I/O Shield Dimensions

OM07107

KU440EX Motherboard Technical Product Specification

1.6 Microprocessor

The motherboard supports a single Pentium II or Celeron processor. The processor’s VID pins automatically program the voltage regulator on the motherboard to the required processor voltage. In addition, the 66 MHz host bus speed is automatically selected.

The motherboard will support either the low cost cartridge retention mechanism (LC-RM) or the retention mechanism specifically designed for the Celeron processor (C-RM).

NOTE

✏

The motherboard has 0.159” mounting holes to accommodate the new plastic studs. The older style studs are too small and can not be used.

The motherboard supports the following processor configurations:

Processor Type Processor Speed Host Bus Speed Retention Module

Pentium II 233 MHz

266 MHz 300 MHz 333 MHz

Celeron 266 MHz 66 MHz C-RM

66 MHz LC-RM

1.6.1 Microprocessor Packaging

The Pentium II processor is packaged in a Single Edge Contact (S.E.C.) cartridge. The cartridge includes the processor core, second-level cache subsystem, thermal plate, and back cover.

The Celeron processor is packaged in a Single Edge Processor (S.E.P.) package that includes the processor core only.

The processor connects to the motherboard through the Slot 1 connector, a 242-pin edge connector. When mounted in Slot 1, the processor is secured by a retention mechanism attached to the motherboard. A passive heatsink is stabilized by the heatsink support.

1.6.2 Second Level Cache

The Pentium II second-level cache is located on the substrate of the S.E.C. cartridge. The cache includes 512 KB of burst pipelined synchronous static RAM (BSRAM) and tag RAM. All supported onboard memory can be cached.

The Celeron processor does not have second level cache.

1.6.3 Microprocessor Upgrades

The motherboard can be upgraded with future steppings of the Pentium II or Celeron processor that run at higher speeds. When upgrading the processor, use the BIOS configure mode to change the processor speed (see Section 1.18).

Motherboard Description

1.7 Main Memory

The motherboard has two dual inline memory module (DIMM) sockets. Synchronous DRAM (SDRAM) can be installed in one or both sockets. In addition, the motherboard supports both serial presence detect (SPD) and non-SPD data structures.

Using the SPD data structure, programmed into an E determine the SDRAM's size and speed. Using the non-SPD data structure, the BIOS will dynamically determine SDRAM size and speed. Minimum memory size is 8 MB; maximum memory size is 256 MB. Memory size and speed can vary between sockets.

The motherboard supports the following memory features:

• 168-pin DIMMs with gold-plated contacts

• 66 MHz unbuffered SDRAM

• Non-ECC (64-bit) memory

• 3.3 V memory only

• Single- or double-sided DIMMs in the following sizes:

DIMM Size Non-ECC Configuration

8 MB 1 Mbit x 64 16 MB 2 Mbit x 64 32 MB 4 Mbit x 64 64 MB 8 Mbit x 64

PROM on the DIMM, the BIOS can

128 MB 16 Mbit x 64

NOTE

✏

All memory components and DIMMs used with the KU440EX motherboard must comply with the PC Unbuffered DIMM Specification. You can access this document through the Internet at: http://www.intel.com/design/pcisets/memory/.

See Section 6.2 for information about this specification.

1.8 Chipset

The Intel 440EX AGPset includes a Host-PCI bridge integrated with both an optimized DRAM controller and an Accelerated Graphics Port (A.G.P.) interface. The I/O subsystem of the 440EX is based on the PIIX4E, which is a highly integrated PCI-ISA/IDE Accelerator Bridge. This chipset consists of the Intel 82443EX PCI/A.G.P. controller (PAC) and the Intel 82371EB PCI/ISA IDE Xccelerator (PIIX4E) bridge chip.

KU440EX Motherboard Technical Product Specification

1.8.1 Intel 82443EX PCI/A.G.P. Controller (PAC)

The PAC provides bus-control signals, address paths, and data paths for transfers between the processor’s host bus, the PCI bus, the A.G.P., and main memory. The PAC features:

• Processor interface control  Support for processor host bus frequencies of 66 MHz  32-bit addressing  Desktop Optimized GTL+ compliant host bus interface

• Integrated DRAM controller, with support for:  +3.3 V only DIMM DRAM configurations  Up to two double sided DIMMs  Synchronous 66-MHz SDRAM  DIMM serial presence detect via the SMBus interface  16- and 64-Mbit devices with 2 K, 4 K, and 8 K page sizes

4, x 8, x 16, and x 32 DRAM widths



 SDRAM 64-bit data interface  Symmetrical and asymmetrical DRAM addressing

• A.G.P. interface  Complies with the A.G.P. specification Rev 1.0 (see Section 6.2 for specification

information)

 Support for +3.3 V PCI devices, A.G.P.-66/133 devices  Synchronous coupling to the host-bus frequency

• PCI bus interface  Complies with the PCI specification Rev 2.1, +5 V 33 MHz interface (see Section 6.2 for

specification information)

 Asynchronous coupling to the host-bus frequency  PCI parity generation support  Data streaming support for PCI-to-DRAM  Support for three PCI bus masters in addition to the host and PCI-to-ISA I/O bridge  Support for concurrent host, A.G.P., and PCI transactions to main memory

• Data buffering  DRAM write buffer with read-around-write capability  Dedicated host-to-DRAM, PCI0-to-DRAM, and PCI1/A.G.P.-to-DRAM read buffers  A.G.P. dedicated inbound/outbound FIFOs (133/66 MHz), used for temporary data storage

• Power management functions  Support for system suspend/resume  Compliant with ACPI power management

• SMBus support for desktop management functions

• Support for system management mode (SMM)

1.8.2 Intel 82371EB PCI ISA IDE Xcelerator (PIIX4E)

The PIIX4E is a multifunction PCI device implementing the PCI-to-ISA bridge, PCI IDE functionality, Universal Serial Bus (USB) host/hub functionality, and enhanced power management. The PIIX4E features:

• Multifunction PCI-to-ISA bridge  Support for the PCI bus at 33 MHz  Complies with the PCI specification (see Section 6.2 for specification information)  Full ISA bus support

• USB controller  Two USB ports (see Section 6.2 for specification information)  Support for legacy keyboard and mouse  Support for the Universal Host Controller Interface (UHCI) Design Guide, revision 1.1,

interface

• Integrated dual-channel enhanced IDE interface  Support for up to four IDE devices  PIO Mode 4 transfers up to 16 MB/sec  Support for Ultra DMA/33 synchronous DMA mode transfers up to 33 MB/sec  Bus master mode with an 8 x 32-bit buffer for bus master PCI IDE burst transfers

• Enhanced DMA controller  Two 8237-based DMA controllers  Support for PCI DMA with three PC/PCI channels and distributed DMA protocols

• Interrupt controller based on 82C59  Support for 15 interrupts  Programmable for edge/level sensitivity

• Power management logic  Sleep/resume logic

†

 Support for Wake on LAN  Support for ACPI (see Section 6.2 for specification information)

• Real-Time Clock  256-byte battery-backed CMOS SRAM  Includes date alarm

• 16-bit counters/timers based on 82C54

technology

Motherboard Description

1.8.2.1 Universal Serial Bus (USB)

The motherboard has two USB ports; one USB peripheral can be connected to each port. For more than two USB devices, an external hub can be connected to either port. The motherboard fully supports the universal host controller interface (UHCI) and uses UHCI-compatible software drivers. See Section 6.2 for information about the USB specification. USB features include:

• Self-identifying peripherals that can be plugged in while the computer is running

• 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

KU440EX Motherboard Technical Product Specification

• 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 USB device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices.

1.8.2.2 IDE Support

The motherboard has two independent bus-mastering PCI IDE interfaces. These interfaces support PIO Mode 3, PIO Mode 4, ATAPI devices (such as CD-ROM), and Ultra DMA/33 synchronousDMA mode transfers. The BIOS supports logical block addressing (LBA) and extended cylinder head sector (ECHS) translation modes. The BIOS automatically detects the IDE device transfer rate and translation mode.

Programmed I/O operations usually 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.

1.8.2.3 Real-Time Clock, CMOS SRAM, 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 256 bytes of battery-backed CMOS SRAM 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.

Motherboard Description

NOTE

✏

The recommended method of accessing the date in systems with Intel motherboards is indirectly from the Real Time Clock (RTC) via the BIOS. The BIOS on Intel motherboards and baseboards contains a century checking and maintenance feature that checks the least two significant digits of the year stored in the RTC during each BIOS request (INT 1Ah) to read the date and, if less than 80 (i.e., 1980 is the first year supported by the PC), updates the century byte to 20. This feature enables operating systems and applications using the BIOS date/time services to reliably manipulate the year as a four-digit value.

For more information on proper date access in systems with Intel motherboards please see

http://support.intel.com/support/year2000/motherboard.htm A 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 3.3 V standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 V applied.

1.9 I/O Interface Controller

The motherboard uses the SMC FDC37M707QFP I/O controller which features:

• Single diskette drive interface

• ISA Plug-and-Play compatible register set

• Two serial ports

• FIFO support on both serial and floppy interfaces

• One parallel port with ECP and EPP support

†

• PS/2

• PCI PME interface to PIIX4E

• Intelligent auto power management, including:

The Setup program provides configuration options for the I/O controller.

1.9.1 Serial Ports

The motherboard has two serial ports. COM1 is a 9-pin D-Sub serial port connector located on the back panel, and COM2 is a header located at J5J1. Both serial ports have NS16C550-compatible UARTs that support data transfers at speeds up to 115.2 Kbits/sec with BIOS support.

style mouse and keyboard interfaces

 Shadowed write-only registers for ACPI compliance  Programmable wake-up event interface  Wake on Modem support is available on the riser  Support for Wake on Ring through an external modem connected to COM1

‡

KU440EX Motherboard Technical Product Specification

1.9.2 Infrared Support

There is no infrared header on the motherboard; however, the edge connector does accommodate

†

infrared signals from the riser. If an IrDA

connector is available on the riser, use the BIOS Peripheral Configuration Submenu to change the mode for Serial Port B from COM2 to infrared applications. You will no longer be able to use Serial Port B.

1.9.3 Parallel Port

The connector for the multimode bi-directional parallel port is a 25-pin D-Sub connector located on the back panel of the motherboard. In the Setup program, there are four options for parallel port operation:

• Output only (standard mode)

• Bi-directional (PS/2 compatible)

• Bi-directional Enhanced Parallel Port (EPP). A driver from the peripheral manufacturer is

required for operation. See Section 6.2 for EPP compatibility

• Bi-directional high-speed Extended Capabilities Port (ECP)

1.9.4 Diskette Drive Controller

The I/O controller is software compatible with the 82077 diskette drive controller and supports a

†

single diskette drive in either PC-AT interface can be configured for the following diskette 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

and PS/2 modes. In the Setup program, the diskette drive

Motherboard Description

1.9.5 PS/2 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.

NOTE

✏

The mouse and keyboard can be plugged into either PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is connected or disconnected.

The keyboard controller contains code which provides the traditional keyboard and mouse control functions and also supports Power On/Reset password protection. A Power On/Reset password can be specified in the BIOS Setup program.

The keyboard controller also supports the hot-key sequence <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).

circuit that, like a self-healing fuse,

1.10 Audio Subsystem

The audio subsystem consists of the following:

• Crystal Semiconductor CS4235 audio codec

• Back panel and onboard audio connectors

1.10.1 Crystal Semiconductor CS4235 Audio Codec

The CS4235 audio codec’s features include:

†

• Compatibility with Roland MPU-401, Sound Blaster

Sound System

• Advanced MPC3-compliant input and output mixer

1.10.2 Audio Connectors

The audio connectors include the following:

• Back panel connectors: stereo line-level output (Line-out) and Mic-in

• CD-ROM (2 mm) audio header

1.10.3 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

†

Microsoft Windows NT

operating systems.

, Sound Blaster Pro†, and Windows

†

3.1, Microsoft Windows 95, and

Audio software and utilities are available from Intel’s World Wide Web site (see Section 6.1).

KU440EX Motherboard Technical Product Specification

1.11 Graphics Subsystem

The graphics subsystem features the ATI Rage IIC graphics controller. See Intel’s World Wide Web site (see Section 6.1) for graphics drivers.

1.11.1 ATI Rage IIC Controller

The ATI Rage IIC provides the following features:

• A.G.P. support

• Full bus mastering support

• Triple 8-bit palette DAC with gamma correction. Pixel rates up to 230 MHz

• Supports DDC1 and DDC2B+ for Plug and Play monitors

†

• Game acceleration including support for Microsoft’s DirectDraw

sprites, transparent blit, masked blit, and context chaining

†

• Direct3D

• 2/4 MB of 83 MHz SGRAM on the motherboard

texture lighting

1.11.2 ATI Rage Pro 1X AGP (Optional)

: double buffering, virtual

The ATI Rage Pro 1X AGP supports motion video acceleration.

• Multistream video for video conferencing

• Filtered horizontal/vertical, up/down scaling enhances playback quality

• Enhanced line buffer allows vertical filtering of native MPEG-2 size (720 x 480) images

• DVD/MPEG-2 decode assist

• Filter circuitry that eliminates video artifacts caused by displaying interlaced video on

noninterlaced displays

• Hardware mirroring for flipping video images in video conferencing systems

• Bi-directional bus mastering engine with planar YUV-to-packed format converter

• YUV-to-RGB color space converter with support for both packed and planar YUV:

 YUV 4:2:2, YUV 4:1:0, and YUV 4:2:0  RGB 32, RGB 16/15, RGB 8, and monochrome

1.12 LAN Subsystem

The Intel® EtherExpress PRO/100 Wired for Management (WfM) PCI LAN subsystem is an

†

Ethernet include:

• 32-bit direct bus mastering on the PCI bus

• Shared memory structure in the host memory that copies data directly to/from host memory

• 10Base-T and 100Base-TX capability using a single RJ-45 connector with connection and

• IEEE 802.3µ Auto-Negotiation for the fastest available connection

• Jumperless configuration; the LAN subsystem is completely software configurable

LAN interface that provides both 10Base-T and 100Base-TX connectivity. Features

activity status LEDs

Motherboard Description

1.12.1 Intel® 82558 LAN Controller

The Intel® 82558 LAN Controller provides the following functions:

• CSMA/CD Protocol Engine

• PCI bus interface (Rev 2.1 compliant)

• DMA engine for movement of commands, status, and network data across the PCI bus

• Integrated physical layer interface, including:

 Complete functionality necessary for the 10Base-T and 100Base-TX interfaces; when in

10 Mbit/sec mode, the interface drives the cable directly

 A complete set of MII management registers for control and status reporting  802.3µ Auto-Negotiation for automatically establishing the best operating mode when

connected to other 10Base-T or 100Base-TX devices

• Integrated power management features, including:

 Support for ACPI  Support for Wake on LAN technology

• Digitally controlled adaptive equalizations and transmission

1.13 Wake on LAN Technology

Wake on LAN technology enables remote wakeup of the computer through a network. Wake on LAN technology requires a PCI add-in network interface card (NIC) with remote wakeup capabilities. The remote wakeup connector on the NIC must be connected to the onboard Wake on LAN technology connector. The NIC monitors network traffic at the Media Independent Interface

†

(MII); upon detecting a Magic Packet computer.

This feature is available on the riser. See Section 1.17 for the location and pinouts of the NLX edge connector.

CAUTION

For Wake on LAN, the +5 V standby line for the power supply must be capable of delivering +5 V Wake on LAN, can damage the power supply.

5% at 720 mA. Failure to provide adequate standby current when implementing

, the NIC asserts a wakeup signal that powers up the

KU440EX Motherboard Technical Product Specification

1.14 Hardware Monitor Subsystem

The hardware monitor subsystem provides low-cost instrumentation capabilities. The features of the hardware monitor subsystem include:

• Support for an optional chassis intrusion connector

• An integrated ambient temperature sensor

• Fan speed sensors (see Figure 4 for the location of fan connector on the motherboard)

• Power supply voltage monitoring to detect levels above or below acceptable values

When suggested ratings for temperature, fan speed, or voltage are exceeded, an interrupt is activated. The hardware monitor component connects to the SMBus.

‡

1.15 Fan Speed Control

The motherboard includes two independent circuits for controlling various system cooling fans: one on the motherboard and the other on the riser.

1.15.1 Fan Header

The processor fan header (J1A1) on the motherboard is intended to drive a processor-mounted fan either full-speed or off, depending on the operating state of the system.

1.15.2 Fan Control Signal on the Riser

The fan control (FAN_CTL) signal is defined by the NLX specification as a means to control the speeds of fans connected to an NLX riser or power supply. The KU440EX motherboard is capable of driving FAN_CTL at different output levels, depending on the operating state of the system. Initially, two levels are defined for high and low fan speed operation. Based on the cooling needs and capabilities of a given system platform, the system OEM can redefine these output levels (by means of the SMBIOS table entries) to achieve a better balance of acoustic and thermal performance.

Motherboard Description

1.15.3 System Management Support

While the system is running an APM OS, the BIOS controls both fan circuits as shown in Table 1. With an ACPI OS, the voltage to both circuits is dependent on the system state, as shown in Table 2.

Table 1. Fan Speed Control under APM OS

APM system states Processor fan voltage FAN_CTL signal to riser

Full on APM Enabled/Standby +12 V (default) OEM-definable “High speed”

(default = +12 V)

APM Suspend off 0 V (default) OEM-definable “Low speed”

(default = 8 V)

Table 2. Fan Speed Control under ACPI OS

ACPI System States Processor Fan Voltage FAN_CTL Signal to Riser

S0 +12V +12 V S1 OS Control ACPI software/Operating System S2 No support No support S3 No support No support S4 Future Upgrade (+0 V) (+0 V)

S5 0 V +0 V

KU440EX Motherboard Technical Product Specification

1.16 Motherboard Connectors

Figure 4 shows the location of the motherboard connectors.

J5J1

J8J1

1 3

J8K2

3 1

J1A1

OM07104

A COM2 header E NLX edge connector B Microphone routing jumper F Slot 1 connector C NLX edge connector (supplemental) G Processor fan connector D CD-ROM audio connector (2mm) H DIMM sockets

Figure 4. Motherboard Connectors

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