D850EMD2/D850EMV2 A94395-001 D850EMD2 D850EMV2 MV85010A 82562ET RJ-45 ATX12V - Datasheet Archive

 

D850EMD2/D850EMV2 Technical Product Specification April 2002 Order Number: A94395-001 The Intel® Desktop Boards

 

Intel® Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification April 2002 Order Number: A94395-001 A94395-001 The Intel® Desktop Boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized errata are documented in the Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Specification Update. Revision History Revision -001 Revision History Date Intel® First release of the Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification. April 2002 This product specification applies to only standard desktop boards D850EMD2 D850EMD2 and D850EMV2 D850EMV2 with BIOS identifier MV85010A MV85010A.86A. Changes to this specification will be published in the Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Specification Update before being incorporated into a revision of this document. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. 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 Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights that relate to the presented subject matter. The furnishing of documents and other materials and information does not provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other intellectual property rights. Intel products are not intended for use in medical, life saving, or life sustaining applications or for any other application in which the failure of the Intel product could create a situation where personal injury or death may occur. Intel may make changes to specifications, product descriptions, and plans at any time, without notice. The Intel® Desktop Boards D850EMD2 D850EMD2 and D850EMV2 D850EMV2 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. Intel and Pentium are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Other names and brands may be claimed as the property of others. Copyright 2002, Intel Corporation. All rights reserved. Preface This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for these Intel desktop boards: D850EMD2 D850EMD2 and D850EMV2 D850EMV2. It describes the standard product and available manufacturing options. Intended Audience The TPS is intended to provide detailed, technical information about the desktop boards D850EMD2 D850EMD2 and D850EMV2 D850EMV2 and their components to the vendors, system integrators, and other engineers and technicians who need this level of information. It is specifically not intended for general audiences. What This Document Contains Chapter 1 2 3 4 5 Description A description of the hardware used on the desktop boards D850EMD2 D850EMD2 and D850EMV2 D850EMV2 A map of the resources of the desktop boards The features supported by the BIOS Setup program The contents of the BIOS Setup program's menus and submenus A description of the BIOS error messages, beep codes, POST codes, and diagnostic LEDs Typographical Conventions This section contains information about the conventions used in this specification. Not all of these symbols and abbreviations appear in all specifications of this type. Notes, Cautions, and Warnings NOTE Notes call attention to important information. CAUTION Cautions are included to help you avoid damaging hardware or losing data. WARNING Warnings indicate conditions, which if not observed, can cause personal injury. iii Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification Other Common Notation # Used after a signal name to identify an active-low signal (such as USB#). (NxnX) When used in the description of a component, N indicates the component type, xn are the relative coordinates of its location on the desktop board, and X is the instance of the particular part at that general location. For example, J5J1 is a connector, located at 5J. It is the first connector in the 5J area. GB Gigabyte (1,073,741,824 bytes) GB/sec Gigabytes per second KB Kilobyte (1024 bytes) Kbit Kilobit (1024 bits) kbits/sec 1000 bits per second MB Megabyte (1,048,576 bytes) MB/sec Megabytes per second Mbit Megabit (1,048,576 bits) Mbit/sec An address or data value ending with a lowercase h indicates a hexadecimal value. x.x V Volts. Voltages are DC unless otherwise specified. iv Megabits per second xxh This symbol is used to indicate other names and brands may be claimed as the property of others. Contents 1 Product Description 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 Board Differences.11 Overview .12 1.2.1 Feature Summary .12 1.2.2 Manufacturing Options .13 1.2.3 Board Layouts .14 1.2.4 Block Diagram.16 Online Support .18 Operating System Support .18 Design Specifications .19 Processor .22 System Memory .23 1.7.1 Memory Features .23 1.7.2 Continuity RIMM Modules .23 1.7.3 RDRAM Memory Configuration .24 Intel® 850E Chipset .25 1.8.1 AGP .26 1.8.2 USB.26 1.8.3 IDE Support .28 1.8.4 Real-Time Clock, CMOS SRAM, and Battery.29 1.8.5 4 Mbit FWH .29 I/O Controller .30 1.9.1 Serial Port .30 1.9.2 Parallel Port.30 1.9.3 Diskette Drive Controller .31 1.9.4 Keyboard and Mouse Interface .31 Audio Subsystem.32 1.10.1 Audio Connectors.33 1.10.2 Audio Subsystem Software .33 LAN Subsystem (Optional) .34 1.11.1 Intel® 82562ET 82562ET PLC Device .34 1.11.2 RJ-45 RJ-45 LAN Connector with Integrated LEDs .34 1.11.3 LAN Subsystem Software .35 CNR (Optional) .35 Hardware Management Subsystem.36 1.13.1 Hardware Monitoring ASICs .36 1.13.2 Fan Control and Monitoring .38 Power Management .39 1.14.1 ACPI.39 1.14.2 Hardware Support .41 v Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 2 Technical Reference 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 Introduction.47 Memory Map .47 Fixed I/O Map.48 DMA Channels .49 PCI Configuration Space Map .49 Interrupts .50 PCI Interrupt Routing Map .51 Connectors .53 2.8.1 Back Panel Connectors.54 2.8.2 Internal I/O Connectors .57 2.8.3 External I/O Connectors .70 Jumper Blocks.74 2.9.1 Front Panel Audio Connector/Jumper Block.74 2.9.2 BIOS Setup Configuration Jumper Block.75 Mechanical Considerations.76 2.10.1 Desktop Board D850EMD2 D850EMD2 Form Factor.76 2.10.2 Desktop Board D850EMV2 D850EMV2 Form Factor .77 2.10.3 I/O Shield .78 Electrical Considerations .79 2.11.1 Power Consumption .79 2.11.2 Add-in Board Considerations.79 2.11.3 Standby Current Requirements .80 2.11.4 Fan Connector Current Capability .81 2.11.5 Power Supply Considerations .81 Thermal Considerations.82 Reliability .83 Environmental .84 Regulatory Compliance .85 2.15.1 Safety Regulations .85 2.15.2 EMC Regulations .85 2.15.3 Product Certification Markings (Board Level) .86 3 Overview of BIOS Features 3.1 3.2 3.3 3.4 3.5 3.6 vi Introduction.87 BIOS Flash Memory Organization .87 Resource Configuration .87 3.3.1 PCI Autoconfiguration .87 3.3.2 PCI IDE Support.88 SMBIOS .88 Legacy USB Support .89 BIOS Updates .89 3.6.1 Language Support.90 3.6.2 Custom Splash Screen.90 Contents 3.7 3.8 Recovering BIOS Data .91 Boot Options.91 3.8.1 CD-ROM Boot .91 3.8.2 Network Boot.92 3.8.3 Booting Without Attached Devices .92 3.8.4 Changing the Default Boot Device During POST.92 3.9 Fast Booting Systems with Intel® Rapid BIOS Boot.92 3.9.1 Peripheral Selection and Configuration .92 3.9.2 Intel Rapid BIOS Boot .93 3.9.3 Operating System .93 3.10 BIOS Security Features.93 4 BIOS Setup Program 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 Introduction.95 Maintenance Menu .96 4.2.1 Extended Configuration Submenu.97 Main Menu.98 Advanced Menu.99 4.4.1 PCI Configuration Submenu.100 4.4.2 Boot Configuration Submenu .101 4.4.3 Peripheral Configuration Submenu.102 4.4.4 IDE Configuration Submenu.104 4.4.5 Diskette Configuration Submenu.107 4.4.6 Event Log Configuration Submenu.108 4.4.7 Video Configuration Submenu.109 Security Menu .110 Power Menu .111 4.6.1 APM Submenu .112 4.6.2 ACPI Submenu .112 Boot Menu .113 4.7.1 Boot Device Priority Submenu.114 4.7.2 Hard Disk Drives Submenu .115 4.7.3 Removable Devices Submenu .115 4.7.4 ATAPI CD-ROM Drives Submenu .116 Exit Menu .116 5 Error Messages and Beep Codes 5.1 5.2 5.3 5.4 5.5 BIOS Error Messages.117 Port 80h POST Codes.119 Bus Initialization Checkpoints .123 Speaker .124 BIOS Beep Codes .124 vii Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification Figures 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. Desktop Board D850EMD2 D850EMD2 Components .14 Desktop Board D850EMV2 D850EMV2 Components.15 Standard Block Diagram.16 Block Diagram with Optional USB 2.0 Support .17 Intel 850E Chipset Block Diagram .25 USB 1.1 Port Configuration (Optional) .27 USB 2.0 Port Configuration (Optional) .28 Audio Subsystem Block Diagram.32 ICH2 and CNR Signal Interface .35 Thermal Monitoring.38 Location of the Standby Power Indicator LED .45 Back Panel Connectors .54 Audio Connectors .58 Power and Hardware Control Connectors .60 Add-in Board and Peripheral Interface Connectors (Desktop Board D850EMD2 D850EMD2).63 Add-in Board and Peripheral Interface Connectors (Desktop Board D850EMV2 D850EMV2).64 External I/O Connectors .70 Location of the Jumper Blocks.74 Desktop Board D850EMD2 D850EMD2 Dimensions .76 Desktop Board D850EMV2 D850EMV2 Dimensions .77 I/O Shield Dimensions .78 Localized High-Temperature Zones.82 Tables 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. viii Summary of Board Differences.11 Feature Summary.12 Manufacturing Options .13 Specifications .19 Supported Processors .22 Supported Memory Configurations .24 Memory Support Matrix .24 Supported IDE Modes .28 LAN Connector LED States .34 Effects of Pressing the Power Switch .39 Power States and Targeted System Power .40 Wake-up Devices and Events.41 Fan Connector Descriptions for Boards that use the Hardware Monitoring ASIC .43 Fan Connector Descriptions for Boards that use the Hardware Monitoring and Fan Control ASIC .43 System Memory Map.47 Fixed I/O Map.48 DMA Channels .49 PCI Configuration Space Map .49 Interrupts .50 PCI Interrupt Routing Map .52 Contents 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. PS/2 Mouse/Keyboard Connectors.55 USB Connectors.55 Parallel Port Connector.55 Serial Port Connectors .56 LAN Connector (Optional) .56 Audio Line In Connector .56 Audio Line Out Connector .56 Mic In Connector .56 Auxiliary Line In Connector.59 ATAPI CD-ROM Connector .59 Fan 3 Connector (Desktop Board D850EMV2 D850EMV2 Only).61 Chassis Intrusion Connector.61 ATX12V ATX12V Power Connector.61 Processor Fan Connector.61 Fan 1 Connector.62 Main Power Connector .62 Fan 2 Connector.62 CNR Connector (Optional).65 PCI Bus Connectors .66 AGP Connector .67 Diskette Drive Connector.68 IDE Connectors .69 SCSI Hard Drive Activity LED Connector.69 Front Panel Audio Connector .71 Front Panel USB Connector .71 Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector .71 Front Panel Connector .72 States for a One-Color Power LED.72 States for a Two-Color Power LED.73 Front Panel Audio Connector/Jumper Block .75 BIOS Setup Configuration Jumper Settings.75 Power Usage.79 Standby Current Requirements .80 Thermal Considerations for Components .83 Desktop Boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 Environmental Specifications .84 Safety Regulations .85 EMC Regulations.85 Component Side Markings .86 Solder Side Markings .86 Boot Device Menu Options .92 Supervisor and User Password Functions .94 BIOS Setup Program Menu Bar .95 BIOS Setup Program Function Keys .96 Maintenance Menu .96 Extended Configuration Submenu .97 Main Menu.98 Advanced Menu.99 PCI Configuration Submenu .100 ix Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. x Boot Configuration Submenu.101 Peripheral Configuration Submenu.102 IDE Configuration Submenu .104 Primary/Secondary IDE Master/Slave Submenus.105 Diskette Configuration Submenu .107 Event Log Configuration Submenu .108 Video Configuration Submenu .109 Security Menu .110 Power Menu .111 APM Submenu .112 ACPI Submenu.112 Boot Menu .113 Boot Device Priority Submenu .114 Hard Disk Drives Submenu .115 Removable Devices Submenu.115 ATAPI CD-ROM Drives Submenu .116 Exit Menu .116 BIOS Error Messages.117 Uncompressed INIT Code Checkpoints.119 Boot Block Recovery Code Checkpoints .119 Run-Time Code Uncompressed in F000 Shadow RAM .120 Bus Initialization Checkpoints .123 Upper Nibble High Byte Functions.123 Lower Nibble High Byte Functions.124 Beep Codes.125 1 Product Description What This Chapter Contains 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 Board Differences.11 Overview .12 Online Support .18 Operating System Support .18 Design Specifications .19 Processor .22 System Memory .23 Intel® 850E Chipset .25 I/O Controller .30 Audio Subsystem.32 LAN Subsystem (Optional) .34 CNR (Optional) .35 Hardware Management Subsystem.36 Power Management .39 1.1 Board Differences This TPS describes these Intel® desktop boards: D850EMD2 D850EMD2 and D850EMV2 D850EMV2. The boards are identical except for the differences listed in Table 1 below. Table 1. Summary of Board Differences Desktop Board D850EMD2 D850EMD2 · microATX form factor (9.60 inches by 9.60 inches) · Three PCI bus connectors · Three fan connectors Desktop Board D850EMV2 D850EMV2 · ATX form factor (12.00 inches by 9.60 inches) · Five PCI bus connectors · Four fan connectors NOTE All illustrations show the desktop board D850EMD2 D850EMD2 unless there are significant differences between the two boards. Any significant differences are indicated in each figure. 11 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.2 Overview 1.2.1 Feature Summary Table 2 summarizes the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2's major features. Table 2. Feature Summary Form Factor Desktop Board D850EMD2 D850EMD2: microATX (9.60 inches by 9.60 inches) Desktop Board D850EMV2 D850EMV2: ATX (12.00 inches by 9.60 inches) Processor · Support for an Intel® Pentium® 4 processor in a µPGA478 PGA478 socket · 400/533 MHz system data bus Memory · Two Direct-RDRAM channels with two RIMMs per channel (four RIMM sockets) · Support for up to 2 GB of system memory Chipset Intel® 850E Chipset, consisting of: · Intel® 82850E 82850E Memory Controller Hub (MCH) · Intel® 82801BA 82801BA I/O Controller Hub (ICH2) · 4 Mbit Firmware Hub (FWH) I/O Control SMSC LPC47M142 LPC47M142 LPC bus I/O controller Video AGP connector supporting 1.5 V 4X AGP cards only Peripheral Interfaces · Up to seven Universal Serial Bus (USB) ports · Two serial ports · One parallel port · Two IDE interfaces with Ultra DMA 33 and ATA-66/100 ATA-66/100 support · One diskette drive interface · PS/2 keyboard and mouse ports Expansion Capabilities · Desktop Board D850EMD2 D850EMD2: Three PCI bus add-in card connectors (SMBus routed to PCI bus connector 2) · Desktop Board D850EMV2 D850EMV2: Five PCI bus add-in card connectors (SMBus routed to PCI bus connector 2) BIOS · Intel/AMI BIOS (resident in the 4 Mbit FWH) · Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and System Management BIOS (SMBIOS) Instantly Available PC · Support for PCI Local Bus Specification Revision 2.2 · Suspend to RAM support · Wake on PCI, CNR, RS-232 RS-232, front panel, PS/2 keyboard, and USB ports LAN Wake Capabilities Support for system wake-up using an add-in network interface card with remote wake-up capability via the PME# signal continued 12 Product Description Table 2. Feature Summary (continued) Hardware Management Subsystem One of the following: · Hardware monitoring ASIC Voltage sense to detect out-of-range power supply voltages Thermal sense to detect out-of-range thermal values Fan monitoring · Hardware monitoring and fan control ASIC Thermal sense to detect out-of-range thermal values Audio (Integrated) Voltage sense to detect out-of-range power supply voltages Fan monitoring and control Audio subsystem that uses the Analog Devices AD1885 AD1885 analog codec for AC '97 processing For information about Refer to The board's compliance level with ACPI, Plug and Play, and SMBIOS. Section 1.5, page 19 1.2.2 Manufacturing Options Table 3 describes the manufacturing options. Not every manufacturing option is available in all marketing channels. Please contact your Intel representative to determine which manufacturing options are available to you. Table 3. Manufacturing Options LAN Intel® 82562ET 82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device CNR One Communication and Networking Riser (CNR) connector (slot shared with PCI bus connector 3 on the desktop board D850EMD2 D850EMD2 and with PCI bus connector 6 on the desktop board D850EMV2 D850EMV2) USB 2.0 Support for USB 2.0 devices. The USB 2.0 option supports up to five USB ports. It uses the following components: · NEC µPD720100 PD720100 USB 2.0 host controller · SMSC LPC47M132 LPC47M132 LPC bus I/O controller The USB 1.1 ports routed through the ICH2 are not available with the USB 2.0 option. NOTE The LAN and the CNR manufacturing options are mutually exclusive. 13 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.2.3 Board Layouts Figure 1 shows the location of the major components on the desktop board D850EMD2 D850EMD2. B C A D E V F U G H T I S J R Q P O N L K M OM14440 OM14440 A B C D E F G H I J K AD1885 AD1885 audio codec Intel 82562ET 82562ET PLC device (optional) AGP connector Back panel connectors +12 V power connector (ATX12V ATX12V) Intel 82850E 82850E MCH µPGA478 PGA478 processor socket Hardware monitor RAMBUS Bank 0 (RIMM1 and RIMM2) RAMBUS Bank 1 (RIMM3 and RIMM4) Power connector L M N O P Q R S T U V Diskette drive connector IDE connectors LPC bus I/O controller Front panel connector Battery Speaker 4 Mbit FWH Intel 82801BA 82801BA ICH2 NEC µPD720100 PD720100 USB 2.0 host controller (optional) PCI bus add-in card connectors CNR connector (optional) Figure 1. Desktop Board D850EMD2 D850EMD2 Components 14 Product Description Figure 2 shows the location of the major components on the desktop board D850EMV2 D850EMV2. B C A D E V F U G H T I S J R Q P O N L K M OM14441 OM14441 A B C D E F G H I J K AD1885 AD1885 audio codec Intel 82562ET 82562ET PLC device (optional) AGP connector Back panel connectors +12 V power connector (ATX12V ATX12V) Intel 82850E 82850E MCH µPGA478 PGA478 processor socket Hardware monitor RAMBUS Bank 0 (RIMM1 and RIMM2) RAMBUS Bank 1 (RIMM3 and RIMM4) Power connector L M N O P Q R S T U V Diskette drive connector IDE connectors LPC bus I/O controller Front panel connector Battery Speaker 4 Mbit FWH Intel 82801BA 82801BA ICH2 NEC µPD720100 PD720100 USB 2.0 host controller (optional) PCI bus add-in card connectors CNR connector (optional) Figure 2. Desktop Board D850EMV2 D850EMV2 Components 15 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.2.4 Block Diagram Figure 3 is a block diagram of the major functional areas of the standard desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2. See Figure 6 on page 27 for USB port routing. Diskette Drive Connector I/O Controller Primary/ Secondary IDE ATA-66/100 ATA-66/100 USB µPGA478 PGA478 Processor Socket System Bus (400/533 MHz) 82850E 82850E Memory Controller Hub (MCH) 4X AGP Connector (1.5 V only) Back Panel USB Ports (2) Front Panel USB Ports (2) USB LPC Bus 850E Chipset AGP Interface Serial Ports Parallel Port PS/2 Mouse PS/2 Keyboard AHA Bus 82801BA 82801BA I/O Controller Hub (ICH2) 4 Mbit Firmware Hub (FWH) Dual RAMBUS Channels Physical Layer Interface RAMBUS Bank 0 (RIMM1 and RIMM2) CSMA/CD Unit Interface RAMBUS Bank 1 (RIMM3 and RIMM4) AC Link Hardware Monitor LAN Connector (optional) CNR Connector (optional) SMBus Line In Line Out AD1885 AD1885 Audio Codec PCI Slot 1 Mic In Auxiliary Line In PCI CD-ROM PCI Slot 2 PCI Slot 3 PCI Slot 4 PCI Slot 5 USB D850EMV2 D850EMV2 Only = connector or socket Figure 3. Standard Block Diagram 16 Back Panel USB Ports (2) OM14437 OM14437 Product Description Figure 4 is a block diagram of the major functional areas of desktop boards D850EMD2 D850EMD2 and D850EMV2 D850EMV2 with the USB 2.0 manufacturing option. See Figure 7 on page 28 for USB port routing. Primary/ Secondary IDE µPGA478 PGA478 Processor Socket Diskette Drive Connector ATA-66/100 ATA-66/100 I/O Controller System Bus (400/533 MHz) LPC Bus 850E Chipset AGP Interface 82850E 82850E Memory Controller Hub (MCH) 4X AGP Connector (1.5 V only) Serial Ports Parallel Port PS/2 Mouse PS/2 Keyboard AHA Bus 82801BA 82801BA I/O Controller Hub (ICH2) 4 Mbit Firmware Hub (FWH) Dual RAMBUS Channels RAMBUS Bank 0 (RIMM1 and RIMM2) RAMBUS Bank 1 (RIMM3 and RIMM4) CSMA/CD Unit Interface Physical Layer Interface LAN Connector (optional) CNR Connector (optional) AC Link Hardware Monitor SMBus Line In Line Out AD1885 AD1885 Audio Codec PCI Slot 1 Mic In Auxiliary Line In PCI CD-ROM PCI Slot 2 USB PCI Slot 3 PCI Slot 4 PCI Slot 5 D850EMV2 D850EMV2 Only NEC µPD720100 PD720100 USB 2.0 Host Controller (optional) USB = connector or socket Back Panel USB Ports (2) Front Panel USB Ports (2) OM14438 OM14438 Figure 4. Block Diagram with Optional USB 2.0 Support 17 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.3 Online Support To find information about. Visit this World Wide Web site: Intel's desktop boards 850EMD2/D850EMV2 850EMD2/D850EMV2 http://www.intel.com/design/motherbd Processor data sheets http://www.intel.com/design/litcentr ICH2 addressing Custom splash screens http://intel.com/design/motherbd/gen_indx.htm Audio software and utilities http://www.intel.com/design/motherbd LAN software and drivers http://www.intel.com/design/motherbd 1.4 Operating System Support The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support drivers for all of the onboard hardware and subsystems under the following operating systems: · Windows 98 SE · Windows Me · Windows NT 4.0 · Windows 2000 · Windows XP For information about Supported drivers Refer to Section 1.3, page 18 NOTE Other drivers may be offered by other third-party vendors. NOTE USB 2.0 support has been tested with Windows 2000 and Windows XP drivers and is not currently supported by any other operating system. 18 Product Description 1.5 Design Specifications Table 4 lists the specifications applicable to the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2. Table 4. Specifications Reference Name Specification Title Version, Revision Date, and Ownership The information is available from. AC '97 Audio Codec '97 Revision 2.2, September 2000, Intel Corporation. ftp://download.intel.com/ial/ scalableplatforms/ ac97r22.pdf ACPI Advanced Configuration and Power Interface Specification Version 2.0, July 27, 2000, Compaq Computer Corp., Intel Corporation, Microsoft Corporation, and Toshiba Corporation. http://www.teleport.com/ ~acpi/ AGP Accelerated Graphics Port Interface Specification Version 2.0, May 4, 1998, Intel Corporation. http://www.agpforum.org/ AMI BIOS AMIBIOS Desktop Core 8.0 AMIBIOS 8.0, 2001, American Megatrends, Inc. http://www.ami.com/support/ doc/amibios8.pdf ATA/ ATAPI-5 Information Technology - AT Attachment with Packet Interface - 5, (ATA/ATAPI-5) Revision 3, February 29, 2000, Contact: T13 Chair, Seagate Technology. http://www.t13.org ATX ATX Specification Version 2.03, December 1998, Intel Corporation. http://www.formfactors.org/ developer/specs/atx/ atxspecs.htm ATX12V ATX12V ATX / ATX12V ATX12V Power Supply Design Guide Version 1.2, August 2000, Intel Corporation. http://www.formfactors.org /developer/specs/atx/ atxspecs.htm BIS Boot Integrity Services (BIS) Application Programming Interface (API) Version 1.0, August 4, 1999, Intel Corporation. http://www.intel.com/labs/ manage/wfm/wfmspecs.htm CNR Communication and Network Riser (CNR) Specification Revision 1.2, November 8, 2001, Intel Corporation. http://developer.intel.com/ technology/cnr/index.htm EHCI Enhanced Host Controller Interface Specification for Universal Serial Bus Revision 1.0, March 12, 2002, Intel Corporation. http://developer.intel.com/ technology/usb/download/ ehci-r10.pdf continued 19 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification Table 4. Specifications (continued) Reference Name Specification Title Version, Revision Date and Ownership The information is available from. EPP IEEE std 1284.1-1997 Enhanced Parallel Port Version 1.7, 1997, Institute of Electrical and Electronic Engineers. http://standards.ieee.org/ reading/ieee/std_public/ description/busarch/ 1284.1-1997_desc.html El Torito Bootable CD-ROM format specification Version 1.0, January 25, 1995, Phoenix Technologies Ltd. and IBM Corporation. http://www.ptltd.com/ techs/specs.html LPC Low Pin Count Interface Specification Version 1.0, September 29, 1997, Intel Corporation. http://www.intel.com/ design/chipsets/industry/ lpc.htm OHCI OpenHCI ­ Open Host Controller Interface Specification for USB Release 1.0a, September 14, 1999, Compaq Computer Corp., Microsoft Corporation, and National Semiconductor Corp. http://www.usb.org/ developers/docs.html PCI PCI Local Bus Specification Version 2.2, December 18, 1998, PCI Special Interest Group. http://www.pcisig.com/ PCI Bus Power Management Interface Specification Version 1.1, December 18, 1998, PCI Special Interest Group. http://www.pcisig.com/ Plug and Play Plug and Play BIOS Specification Version 1.0a, May 5, 1994, Compaq Computer Corp., Phoenix Technologies Ltd., and Intel Corporation. http://www.microsoft.com/ hwdev/respec/pnpspecs.htm PXE Preboot Execution Environment Version 2.1, September 1999, Intel Corporation. http://developer.intel.com/ ial/wfm/wfmspecs.htm RIMM Rambus Serial Presence Detect (SPD) Specification Version 1.0, March 1999, Rambus Corporation. http://www.rambus.com/ developer/ support_rimm.html Rambus RIMM Specification Version 1.0, February 1999, Rambus Corporation. http://www.rambus.com/ developer/ development_support.html continued 20 Product Description Table 4. Specifications (continued) Reference Name Specification Title Version, Revision Date and Ownership The information is available from. SMBIOS System Management BIOS Version 2.3.1, March 16, 1999, American Megatrends Inc., Award Software International Inc., Compaq Computer Corporation, Dell Computer Corporation, Hewlett-Packard Company, Intel Corporation, International Business Machines Corporation, Phoenix Technologies Limited, and SystemSoft Corporation. http://www.dmtf.org/ standards/bios.php UHCI Universal Host Controller Interface Design Guide Version 1.1, March 1996, Intel Corporation. http://www.usb.org/ developers/docs.html USB Universal Serial Bus Specification Version 1.1, September 23, 1998, Compaq Computer Corporation, Intel Corporation, Microsoft Corporation, and NEC Corporation. http://www.usb.org/ developers/docs.html Version 2.0, April 27, 2000, Compaq Computer Corporation, Hewlett-Packard Company, Lucent Technologies Inc., Intel Corporation, Microsoft Corporation, NEC Corporation, and Koninklijke Philips Electronics N.V. WfM Wired for Management Baseline Version 2.0, December 18, 1998, Intel Corporation. http://www.intel.com/labs/ manage/wfm/ wfmspecs.htm 21 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.6 Processor CAUTION Use of unsupported processors can damage the board, the processor, and the power supply. See the Intel® Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Specification Update for the most up-to-date list of supported processors for these boards. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support a single Pentium 4 processor (in a µPGA478 PGA478 socket) with a system bus of 400/533 MHz. Table 5 lists the supported processors. Table 5. Supported Processors Type Designation System Bus L2 Cache Size Pentium 4 processor Up to 2.4 GHz 400 MHz 256 KB Pentium 4 processor Up to 2.4A GHz 400 MHz 512 KB Pentium 4 processor Up to 2.53 GHz 533 MHz 512 KB The list of supported processors for the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 is available from Intel's World Wide Web site. All supported onboard memory can be cached. See the processor's data sheet for cachability limits. CAUTION Use only an ATX12V-compliant power supply with these desktop boards. ATX12V ATX12V power supplies have two power leads that provide required supplemental power for the Intel Pentium 4 processor and the Intel 850E chipset. Always connect the 20-pin and 4-pin leads of the ATX12V ATX12V power supply to the corresponding connectors on the board. Otherwise, the board and the processor could be damaged. Do not use a standard ATX power supply. Doing so could damage the board and the processor. For information about Refer to Processor support Section 1.3, page 18 Processor usage 22 Section 1.3, page 18 Power supply connectors Section 2.8.2.3, page 60 Product Description 1.7 System Memory CAUTION Turn off the power and unplug the power cord before installing or removing RIMM modules. Failure to do so could damage the memory and the board. (After AC power is removed, the standby power indicator LED should not be lit. See Figure 11 on page 45 for the location of the standby power indicator LED.) NOTE The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support combinations of no more than 32 RDRAM components per RDRAM bank. If the total number of RDRAM components installed in all RIMM sockets exceeds 64, the computer will not boot. 1.7.1 Memory Features The 82850E 82850E MCH integrates two lock-stepped Direct Rambus banks, providing a processor-tomemory bandwidth up to 3.2 GB/sec. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 have four RIMM sockets (two sockets for each bank) and support the following memory features: · Single- or double-sided RIMM configurations · Maximum of 32 Direct Rambus devices per bank · Memory configurations from 128 MB (minimum) to 2 GB (maximum), using 128 Mbit or 256 Mbit technology PC800-compliant RDRAM · Serial Presence Detect (SPD)­based configuration for optimal memory operation · Suspend to RAM support · ECC and non-ECC support 1.7.2 Continuity RIMM Modules All RIMM sockets must be populated to achieve continuity for termination at the Rambus interface. Continuity RIMMs (or "pass-through" modules) must be installed in the second RDRAM bank if memory is not installed. If any of the RIMM sockets are not populated, the computer will not complete the Power-On Self-Test (POST) and the BIOS beep codes will not be heard. 23 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.7.3 RDRAM Memory Configuration When installing memory, note the following: · The four RIMM sockets are grouped into two banks: · · · · Bank 0 (labeled on the board as RIMM1 and RIMM2) Bank 1 (labeled on the board as RIMM3 and RIMM4) Bank 0 must be populated first, ensuring that the RDRAM installed in RIMM1 and RIMM2 is identical in speed, size, and density. For example, the minimum system configuration would use two 64 MB RIMM modules of PC800 PC800 RDRAM. If the desired memory configuration has been achieved by populating Bank 0, then Bank 1 should be filled with two Continuity RIMMs. If memory is to be installed in Bank 1, the RIMM modules installed in RIMM3 and RIMM4 must be identical in size and density to each other and match the speed of the RIMM modules in Bank 0. The RIMM modules do not, however, need to match those in Bank 0 in size and density. For example, if Bank 0 has two 128 MB RIMMs of PC800 PC800 RDRAM, Bank 1 would require PC800 PC800 RDRAM also; however, any other supported RIMM modules such as 64 MB or 192 MB could be used. If ECC functionality is required, all installed RIMM modules must be ECC compliant. Table 6 gives examples of RDRAM component density for various RIMM modules. Component density (counts) can be identified on the RIMM label. Table 6. Supported Memory Configurations Rambus Technology Capacity with 4 DRAM Components per RIMM Capacity with 6 DRAM Components per RIMM Capacity with 8 DRAM Components per RIMM Capacity with 12 DRAM Components per RIMM Capacity with 16 DRAM Components per RIMM 128/144 Mbit, -40 64 MB 96 MB 128 MB 192 MB 256 MB 256/288 Mbit, -40 128 MB 192 MB 256 MB 384 MB 512 MB CAUTION If the installed processor operates with a 533 MHz system bus, use only PC800-40 PC800-40 memory; do not use PC800-45 PC800-45 memory. Failure to follow this guideline may result in unreliable operation. If the installed processor operates with a 400 MHz system bus, you can use either PC800-40 PC800-40 or PC800-45 PC800-45 memory. Table 7 lists the supported combinations of memory types with processor system bus values. Table 7. Processor System Bus Memory Support Matrix Support for PC800-40 PC800-40 memory? Support for PC800-45 PC800-45 memory? Support for PC700 PC700 memory? Support for PC600 PC600 memory? 533 MHz Yes No No No 400 MHz Yes Yes (Note) Yes Note: Will default to PC600-level performance. 24 Product Description 1.8 Intel® 850E Chipset The Intel 850E chipset consists of the following devices: · Intel 82850E 82850E MCH with Accelerated Hub Architecture (AHA) bus · Intel 82801BA 82801BA ICH2 with AHA bus · 4 Mbit FWH The MCH is a centralized controller for the system bus, the memory bus, the AGP bus, and the AHA interface. The ICH2 is a centralized controller for the board's I/O paths. The 4 Mbit FWH provides the nonvolatile storage of the BIOS. The component combination provides the chipset interfaces as shown in Figure 5. ATA-66/100 ATA-66/100 Network System Bus USB 850E Chipset 82850E 82850E Memory Controller Hub (MCH) AHA Bus 82801BA 82801BA I/O Controller Hub (ICH2) 4 Mbit Firmware Hub (FWH) LPC Bus Dual RAMBUS Channels AGP Interface SMBus PCI Bus AC Link OM14439 OM14439 Figure 5. Intel 850E Chipset Block Diagram NOTE The USB bus is routed from the NEC USB 2.0 controller if the USB 2.0 option is supported. For information about Refer to The Intel 850E chipset http://developer.intel.com Chipset resources Section 1.3, page 19 25 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.8.1 AGP NOTE The AGP connector is keyed for 1.5 V AGP cards only. Do not attempt to install a legacy 3.3 V AGP card. The AGP connector is not mechanically compatible with legacy 3.3 V AGP cards. The AGP connector supports AGP add-in cards with 1.5 V Switching Voltage Level (SVL). Legacy 3.3 V AGP cards are not supported and will prevent the system from booting if installed. For information about Refer to The location of the AGP connector Figure 1, page 14 The signal names of the AGP connector Table 40, page 67 AGP is a high-performance interface for graphics-intensive applications, such as 3-D applications. While based on the PCI Local Bus Specification, Rev. 2.1, AGP is independent of the PCI bus and is intended for exclusive use with graphical display devices. AGP overcomes certain limitations of the PCI bus related to handling large amounts of graphics data with the following features: · Pipelined memory read and write operations that hide memory access latency · Demultiplexing of address and data on the bus for nearly 100 percent efficiency For information about Refer to The Accelerated Graphics Port Interface Specification Section 1.5, page 19 1.8.2 USB The following sections describe the USB port configurations. NOTE Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices. For information about Refer to The location of the USB connectors on the back panel Figure 12, page 54 The signal names of the back panel USB connectors Table 22, page 55 The location of the front panel USB connector Figure 17, page 70 The signal names of the front panel USB connector Table 45, page 71 The USB specifications, OHCI, EHCI, and UHCI Section 1.5, page 19 1.8.2.1 USB 1.1 Support The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support up to seven USB ports, as shown in Figure 6. The ICH2 provides four ports: · · · 26 Two ports implemented with stacked back panel connectors, adjacent to the PS/2 connectors One port accessible through a CNR add-in card One port routed to the SMSC USB hub Product Description The onboard SMSC USB hub provides four ports: · Two ports implemented with stacked back panel connectors, adjacent to the audio connectors · Two ports routed to the front panel USB connector For more than seven USB devices, an external hub can be connected to any of the ports. Back panel USB connectors adjacent to the PS/2 ports USB USB ports (2) USB CNR connector USB USB ports (2) Back panel USB connectors adjacent to the audio connectors USB USB ports (2) Front panel USB connectors 82801BA 82801BA I/O Controller Hub (ICH2) USB port accesible through a USB connector on an optional CNR add-in card USB SMSC LPC47M142 LPC47M142 LPC Bus I/O Controller OM12339 OM12339 Figure 6. USB 1.1 Port Configuration (Optional) 1.8.2.2 USB 2.0 Support (Optional) The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support USB 2.0 using the NEC µPD720100 PD720100 USB 2.0 host controller, which is a manufacturing option. The port routing is implemented as shown in Figure 7. The NEC µPD720100 PD720100 controller is connected through the PCI bus and provides support for up to five USB ports: · Two ports implemented with stacked back panel connectors, adjacent to the audio connectors · Two ports routed to the front panel USB connector · One port accessible through a CNR add-in card For more than five USB devices, an external hub can be connected to any of the ports. Boards with the USB 2.0 option fully support OHCI and EHCI and use OHCI- and EHCI-compatible drivers. NOTE USB 2.0 support has been tested with Windows 2000 and Windows XP drivers and is not currently supported by any other operating system. 27 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification USB ports (2) PCI NEC µPD720100 PD720100 USB 2.0 Host Controller USB CNR connector USB ports (2) Back panel USB connectors adjacent to the audio connectors USB port accessible through a USB connector on an optional CNR add-in card Front panel USB connectors OM12337 OM12337 Figure 7. USB 2.0 Port Configuration (Optional) 1.8.3 1.8.3.1 IDE Support IDE Interfaces The ICH2's IDE controller has two independent bus-mastering IDE interfaces that can be independently enabled. The IDE interfaces support the modes listed in Table 8. Table 8. Supported IDE Modes Mode Description Programmed I/O (PIO) Processor controls data transfer Supported Transfer Rates 8237-style DMA DMA offloads the processor Up to 16 MB/sec Ultra DMA · DMA protocol on the IDE bus Up to 33 MB/sec · Supports host and target throttling ATA-66 ATA-66 · DMA protocol on the IDE bus Up to 66 MB/sec · Allows host and target throttling · Similar to Ultra DMA · Device driver compatible · DMA protocol on the IDE bus · Read transfer rates up to 100 MB/sec · Allows host and target throttling ATA-100 ATA-100 · Write transfer rates up to 88 MB/sec NOTE ATA-66 ATA-66 and ATA-100 ATA-100 are faster timings and require a specialized cable to reduce reflections, noise, and inductive coupling. The IDE interfaces also support ATAPI devices (such as CD-ROM drives) and ATA devices using the transfer modes listed in Section 4.4.4.1 on page 105. The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS) translation modes. The drive reports the transfer rate and translation mode to the BIOS. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support Laser Servo (LS-120 LS-120) diskette technology through the IDE interfaces. The BIOS supports booting from an LS-120 LS-120 drive. 28 Product Description NOTE The BIOS will always recognize an LS-120 LS-120 drive as an ATAPI floppy drive. To ensure correct operation, do not configure the drive as a hard disk drive. For information about Refer to The location of the IDE connectors Figure 15, page 63 The signal names of the IDE connectors Table 42, page 69 The Boot menu in the BIOS Setup program Section 4.7, page 113 1.8.3.2 SCSI Hard Drive Activity LED Connector The SCSI hard drive activity LED connector is a 1 x 2­pin connector that allows an add-in SCSI controller to use the same LED as the onboard IDE controller. For proper operation, this connector should be wired to the LED output of the add-in SCSI controller. The LED indicates when data is being read from, or written to, both the add-in SCSI controller and the IDE controller. For information about Refer to The location of the SCSI hard drive activity LED connector Figure 17, page 70 The signal names of the SCSI hard drive activity LED connector Table 43, page 69 1.8.4 Real-Time Clock, CMOS SRAM, and Battery A coin-cell battery (CR2032 CR2032) 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 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 VSB applied. NOTE If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on. 1.8.5 4 Mbit FWH The FWH provides the following: · · System BIOS program System security and manageability logic that enable protection for storing and updating of platform information 29 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.9 I/O Controller The SMSC LPC47M142 LPC47M142 I/O controller provides the following features: · 3.3 V operation · Two serial ports · One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port (EPP) support · Serial IRQ interface compatible with serialized IRQ support for PCI systems · PS/2-style mouse and keyboard interfaces · Interface for one 1.2 MB or 1.44 MB diskette drive · Intelligent power management, including a programmable wake-up event interface · PCI power management support · Two fan tachometer inputs (not used on desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 equipped with the hardware monitoring and fan control ASIC) · USB hub The BIOS Setup program provides configuration options for the I/O controller. NOTE The SMSC LPC47M132 LPC47M132 I/O controller is used if the USB 2.0 option is supported. The SMSC LPC47M132 LPC47M132 I/O controller supports all the features of the LPC47M142 LPC47M142 controller, except the LPC47M132 LPC47M132 does not have a USB hub. For information about Refer to SMSC LPC47M142 LPC47M142 and LPC47M132 LPC47M132 I/O controllers http://www.smsc.com 1.9.1 Serial Port The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 have two serial port connectors on the back panel. The serial ports support data transfers at speeds up to 115.2 kbits/sec with BIOS support. For information about Refer to The location of the serial port connectors Figure 12, page 54 The signal names of the serial port connectors Table 24, page 56 1.9.2 Parallel Port The 25-pin D-Sub parallel port connector is located on the back panel. Use the BIOS Setup program to set the parallel port mode. For information about Refer to The location of the parallel port connector Figure 12, page 54 The signal names of the parallel port connector 30 Table 23, page 55 Setting the parallel port's mode Section 4.4.3, page 102 Product Description 1.9.3 Diskette Drive Controller The I/O controller supports one diskette drive. Use the BIOS Setup program to configure the diskette drive interface. For information about Refer to The location of the diskette drive connector Section 2.8.2.4, page 63 The signal names of the diskette drive connector Table 41, page 68 The supported diskette drive capacities and sizes Table 73, page 107 1.9.4 Keyboard and Mouse Interface PS/2 keyboard and mouse connectors are located on the back panel. NOTE The keyboard is supported in the bottom PS/2 connector and the mouse is supported in the top PS/2 connector. Power to the computer should be turned off before a keyboard or mouse is connected or disconnected. For information about Refer to The location of the keyboard and mouse connectors Figure 12, page 54 The signal names of the keyboard and mouse connectors Table 21, page 55 31 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.10 Audio Subsystem The audio subsystem consists of the following devices: · Intel 82801BA 82801BA ICH2 · Analog Devices AD1885 AD1885 analog codec The audio subsystem includes these features: · Split digital/analog architecture for improved signal-to-noise (S/N) ratio: 85 dB · Power management support for ACPI 1.0 (driver dependant) · 3-D stereo enhancement The audio subsystem supports the following audio interfaces: · ATAPI-style connectors: CD-ROM · · Auxiliary line in Front panel audio connector, including pins for: Line out Mic in Back panel audio connectors: Line out Line in Mic in Figure 8 is a block diagram of the audio subsystem. Line In 82801BA 82801BA I/O Controller Hub (ICH2) Line Out AC '97 Link AD1885 AD1885 Audio Codec Mic In Auxiliary Line In CD-ROM OM12338 OM12338 Figure 8. Audio Subsystem Block Diagram For information about The location and signal names of the back panel audio connectors 32 Refer to Section 2.8.1, page 54 Product Description 1.10.1 1.10.1.1 Audio Connectors Front Panel Audio Connector A 2 x 5-pin connector provides mic in and line out signals for front panel audio connectors. For information about Section 2.8.3, page 70 The signal names of the front panel audio connector Refer to The location of the connector Table 44, page 71 NOTE The front panel audio connector is alternately used as a jumper block for routing audio signals. Refer to Section 2.9.1 on page 74 for more information. 1.10.1.2 Auxiliary Line In Connector A 1 x 4­pin ATAPI-style connector connects the left and right channel signals of an internal audio device to the audio subsystem. For information about Refer to The location of the auxiliary line in connector Figure 13, page 58 The signal names of the auxiliary line in connector Table 29, page 59 1.10.1.3 ATAPI CD-ROM Audio Connector A 1 x 4­pin ATAPI-style connector connects an internal ATAPI CD-ROM drive to the audio mixer. For information about Refer to The location of the ATAPI CD-ROM connector Figure 13, page 58 The signal names of the ATAPI CD-ROM connector Table 30, page 59 1.10.2 Audio Subsystem Software Audio software and drivers are available from Intel's World Wide Web site. For information about Refer to Obtaining audio software and drivers Section 1.3, page 18 33 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.11 LAN Subsystem (Optional) The Network Interface Controller subsystem consists of the ICH2 (with integrated LAN Media Access Controller) and a physical layer interface device. The LAN subsystem includes the following features: · PCI Bus Master interface · CSMA/CD Protocol Engine · Serial CSMA/CD unit interface that supports the following physical layer interface devices: 82562ET 82562ET onboard LAN 82562ET/EM 82562ET/EM (10/100 Mbit/sec Ethernet) on CNR bus · 82562EH 82562EH (1 Mbit/sec HomePNA) on CNR bus PCI Power Management Supports ACPI technology Supports wake-up from a suspend state using the PME# signal 1.11.1 Intel® 82562ET 82562ET PLC Device The Intel 82562ET 82562ET component provides an interface to the back panel RJ-45 RJ-45 connector with integrated LEDs. This physical interface may alternately be provided through the CNR connector. The Intel 82562ET 82562ET provides the following functions: · Basic 10/100 Ethernet LAN connectivity · RJ-45 RJ-45 connector support with status indicator LEDs on the back panel · Full device driver compatibility · ACPI support · Programmable transit threshold · Configuration EEPROM that contains the MAC address 1.11.2 RJ-45 RJ-45 LAN Connector with Integrated LEDs Two LEDs are built into the RJ-45 RJ-45 LAN connector. Table 9 describes the LED states when the board is powered up and the LAN subsystem is operating. Table 9. LAN Connector LED States LED Color LED State Condition Green Off 10 Mbit/sec data rate is selected. On 100 Mbit/sec data rate is selected. Off LAN link is not established. On (steady state) LAN link is established. On (brighter and pulsing) The computer is communicating with another computer on the LAN. Yellow 34 Product Description 1.11.3 LAN Subsystem Software LAN software and drivers are available from Intel's World Wide Web site. For information about Refer to Obtaining LAN software and drivers Section 1.3, page 18 1.12 CNR (Optional) AC '97 Interface Intel 82801BA 82801BA I/O Controller Hub (ICH2) LAN Interface SMBus USB CNR Connector The CNR connector provides an interface that supports the audio, modem, USB, and LAN interfaces of the Intel 850E chipset. Figure 9 shows the signal interface between the riser and the ICH2. Communication and Networking Riser (Up to two AC '97 codecs and one LAN device) OM12277 OM12277 Figure 9. ICH2 and CNR Signal Interface NOTE The USB bus is routed from the NEC USB 2.0 controller if the USB 2.0 option is supported. The CNR supports the following interfaces: · AC '97 interface: supports audio and/or modem functions on the CNR board. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support six-channel audio using a CNR board. · LAN interface: eight-pin interface for use with PLC-based devices. · SMBus interface: provides Plug and Play functionality for the CNR board. · USB interface: provides a USB interface for the CNR board. The CNR connector includes power signals required for power management and for CNR board operation. To learn more about the CNR, refer to the CNR specification. NOTE If you install a CNR card with an audio codec that cannot support a multichannel audio upgrade, the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2's integrated audio codec will be disabled. This only applies to desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 that have both the onboard audio subsystem and a CNR. 35 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification For information about Refer to CNR audio upgrade cards http://developer.intel.com/technology/cnr/ 1.13 Hardware Management Subsystem The hardware management features enable the boards to be compatible with the Wired for Management (WfM) specification. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 have several hardware management features, including the following: · Fan control and monitoring · Thermal and voltage monitoring For information about Refer to The WfM specification Section 1.5, page 19 1.13.1 Hardware Monitoring ASICs The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 provide one of the following: · A hardware monitoring ASIC · A hardware monitoring and fan control ASIC The features of these components are described in this section. Contact your Intel sales representative to determine which type of hardware monitoring ASIC is present on your Intel desktop board. 1.13.1.1 Hardware Monitoring ASIC The features of the hardware monitoring ASIC (Analog Devices ADM1025 ADM1025, Philips Semiconductor NE1619 NE1619, or equivalent) include: · Internal ambient temperature sensor · Remote thermal diode sensor for direct monitoring of processor temperature · Power supply monitoring of four voltages (+5 V, +3.3 V, +1.5 V, and +VCCP1) to detect levels above or below acceptable values · SMBus interface For information about Refer to The location of the fan connectors and sensors for thermal monitoring Figure 10, page 38 The Analog Devices ADM1025 ADM1025 36 http://www.analogdevices.com The Philips Semiconductor NE1619 NE1619 http://www.philipssemiconductor.com Product Description 1.13.1.2 Hardware Monitoring and Fan Control ASIC The features of the hardware monitoring and fan control ASIC (Analog Devices ADM1027 ADM1027, National Semiconductor LM85, Standard Microsystems SMSC EMC6D101 EMC6D101, or equivalent) include: · Internal ambient temperature sensor · Two remote thermal diode sensors for direct monitoring of processor temperature and ambient temperature sensing · Power supply monitoring of five voltages (+5 V, +12 V, +3.3 V, +1.5 V, and +VCCP1) to detect levels above or below acceptable values · Fan monitoring for all fans (three fans on the Desktop Board D850EMD2 D850EMD2; four fans on the Desktop Board D50EMV2 D50EMV2) · Thermally monitored closed-loop fan control, for all three fans, that can adjust the fan speed or switch the fans on or off as needed · SMBus interface For information about Refer to The location of the fan connectors and sensors for thermal monitoring Figure 10, page 38 The Analog Devices ADM1027 ADM1027 http://www.analogdevices.com The National Semiconductor LM85 http://www.national.com The Standard Microsystems SMSC EMC6D101 EMC6D101 http://www.smsc.com 1.13.1.3 Thermal Monitoring Figure 10 shows the location of the sensors and fan connectors. 37 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification E D A B C G F OM14480 OM14480 Item Description A Thermal diode, located on processor die B Ambient temperature sensor, internal to both hardware monitoring ASIC options C Remote ambient temperature sensor (Note) D Processor fan E Rear chassis fan (Fan 3; present on the Desktop Board D850EMV2 D850EMV2 only) F Front chassis fan (Fan 1) G Front chassis fan (Fan 2) Note: This sensor is present only on Desktop Boards with the hardware monitoring and fan control ASIC. Figure 10. Thermal Monitoring 1.13.2 Fan Control and Monitoring The I/O controller provides two fan tachometer inputs. Monitoring and control can be implemented using third-party software. For information about The functions of the fan connectors Section 1.14.2.2, page 42 The location of the fan connectors Figure 14, page 60 The signal names of the fan connectors 38 Refer to Section 2.8.2.3, page 60 Product Description 1.14 Power Management Power management is implemented at several levels, including: · Software support using ACPI · Hardware support: Power connector Fan connectors LAN wake capabilities Instantly Available technology Wake from USB Wake from PS/2 keyboard PME# wake-up support 1.14.1 ACPI ACPI gives the operating system direct control over the power management and Plug and Play functions of a computer. The use of ACPI with the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 requires an operating system that provides full ACPI support. ACPI features include: · Plug and Play (including bus and device enumeration). · Power management control of individual devices, add-in boards (some add-in boards may require an ACPI-aware driver), video displays, and hard disk drives. · Methods for achieving less than 15-watt system operation in the power-on/standby sleeping state. · A soft-off feature that enables the operating system to power off the computer. · Support for multiple wake-up events (see Table 12 on page 41). · Support for a front panel power and sleep mode switch. Table 10 lists the system states based on how long the power switch is pressed, depending on how ACPI is configured with an ACPI-aware operating system. Table 10. Effects of Pressing the Power Switch If the system is in this state. Off (ACPI S5 ­ soft-off) .and the power switch is pressed for Less than four seconds On (ACPI S0 ­ working state) Less than four seconds On (ACPI S0 ­ working state) More than four seconds Sleep (ACPI S1 ­ sleeping state) Less than four seconds Sleep (ACPI S1 ­ sleeping state) More than four seconds .the system enters this state Power-on (ACPI S0 ­ working state) Soft-off/Standby (ACPI S1 ­ sleeping state) Fail-safe power-off (ACPI S5 ­ soft-off) Wake-up (ACPI S0 ­ working state) Power-off (ACPI S5 ­ soft-off) For information about The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2's compliance level with ACPI Refer to Section 1.5, page 19 39 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.14.1.1.1 System States and Power States Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state. Table 11 lists the power states supported by the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 11. Power States and Targeted System Power Sleeping States Processor States Device States Targeted System Power (Note 1) S0 ­ working C0 ­ working D0 ­ working state Full power > 30 W S1 ­ Processor stopped C1 ­ stop grant D1, D2, D3 ­ device specification specific 5 W < power < 52.5 W S3 ­ Suspend to RAM. Context saved to RAM. No power D3 ­ no power except for wake-up logic Power < 5 W (Note 2) S4 ­ Suspend to disk. Context saved to disk. No power D3 ­ no power except for wake-up logic Power < 5 W (Note 2) S5 ­ Soft-off. Context not saved. Cold boot is required. No power D3 ­ no power except for wake-up logic Power < 5 W (Note 2) No power to the system No power D3 ­ no power for wake-up logic, except when provided by battery or external source No power to the system so that service can be performed Notes: 1. 2. 40 Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the system chassis' power supply. Dependent on the standby power consumption of wake-up devices used in the system. Product Description 1.14.1.1.2 Wake-up Devices and Events Table 12 lists the devices or specific events that can wake the computer from specific states. Table 12. Wake-up Devices and Events These devices/events can wake up the computer. .from this state Power switch S1, S3, S4, S5 RTC alarm S1, S3, S4, S5 LAN S1, S3, S4, S5 (Note) CNR S1, S3, S4, S5 (Note) PME# S1, S3, S4, S5 (Note) Modem (back panel serial port A) S1, S3 USB S1, S3 PS/2 keyboard S1, S3 Note: For LAN, CNR, and PME#, S5 is disabled by default in the BIOS Setup program. Setting this option to Power On will enable a wake-up event from LAN in the S5 state. NOTE The use of these wake-up events from an ACPI state requires an operating system that provides full ACPI support. In addition, software, drivers, and peripherals must fully support ACPI wake events. 1.14.1.1.3 Plug and Play In addition to power management, ACPI provides control information so that operating systems can facilitate Plug and Play. ACPI is used only to configure devices that do not use other hardware configuration standards. PCI devices, for example, are not configured by ACPI. 1.14.2 Hardware Support CAUTION Ensure that the power supply provides adequate +5 V standby current if the LAN wake capabilities and Instantly Available technology features are used. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. Refer to Section 2.11.3 on page 80 for additional information. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 provide several power management hardware features, including: · · · · · · · Power connector Fan connectors LAN wake capabilities Instantly Available technology Wake from USB Wake from PS/2 keyboard PME# wake-up support 41 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification LAN wake capabilities and Instantly Available technology require power from the +5 V standby line. The sections discussing these features describe the incremental standby power requirements for each. NOTE The use of Wake from USB devices from an ACPI state requires an operating system that provides full ACPI support. 1.14.2.1 Power Connector When used with an ATX12V-compliant power supply that supports remote power-on/off, the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 can turn off the system power through software control. When the system BIOS receives the correct command from the operating system, the BIOS turns off power to the computer. With soft-off enabled, if power to the computer is interrupted by a power outage or a disconnected power cord, the computer returns to either an on or off state, based on the BIOS configuration, when power resumes. The computer's response can be set using the After Power Failure feature in the BIOS Setup program's Power menu. For information about Refer to The location of the power connector Figure 14, page 60 The signal names of the power connector Table 36, page 62 The Power menu in the BIOS Setup program Section 4.6, page 113 The ATX specification Section 1.5, page 19 1.14.2.2 Fan Connectors The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 have two fan connectors with thermal control signals (fan 1 and fan 2) that are used to switch the fans on and off as determined by the thermal sensors. The ambient temperature of a desktop board D850EMD2/D850EMV2-based system is thermally monitored by separate temperature sensors that control voltage to the fan 1 and fan 2 connectors. If the fans attached to these connectors provide a tachometer signal, the sensor reports the fan speed to the hardware monitor component. Table 13 summarizes the functions of the fan connectors for desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 that use the Hardware Monitoring ASIC. 42 Product Description Table 13. Fan Connector Descriptions for Boards that use the Hardware Monitoring ASIC Feature Processor Fan Fan 1 Fan 2 Fan 3 (Note) +12 V DC connection Yes Yes Yes Yes Tachometer output Yes No Yes No Controllable No No No No Fan is on in the ACPI S0 or S1 states Yes Yes Yes Yes Fan is off in the ACPI S3, S4, and S5 states Yes Yes Yes Yes Note: This fan is present on the desktop board 850EMV2 850EMV2 only. Table 14 summarizes the functions of the fan connectors for desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 that use the Hardware Monitoring and Fan Control ASIC. Table 14. Fan Connector Descriptions for Boards that use the Hardware Monitoring and Fan Control ASIC Feature Processor Fan Fan 1 Fan 2 Fan 3 (Note 1) +12 V DC connection Yes Yes Yes Yes Tachometer output Yes Yes Yes Yes Controllable Yes Yes Yes Yes (Note 2) Fan is on in the ACPI S0 or S1 states Yes Yes Yes Yes Fan is off in the ACPI S3, S4, and S5 states Yes Yes Yes Yes Notes: 1. This fan is present on the desktop board D850EMV2 D850EMV2 only. 2. Fan 3 uses the same controls as fan 2. If fan 2 is switched off, fan 3 is also off. For information about Refer to The location of the fan connectors Figure 14, page 60 The signal names of the fan connectors Section 2.8.2.3, page 58 43 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 1.14.2.3 LAN Wake Capabilities CAUTION For LAN wake capabilities, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing LAN wake capabilities can damage the power supply. Refer to Section 2.11.3 on page 80 for additional information. LAN wake capabilities enable remote wake-up of the computer through a network. The LAN subsystem PCI bus network adapter monitors network traffic at the MII. Upon detecting a Magic Packet frame, the LAN subsystem asserts a wake-up signal that powers up the computer. Depending on the LAN implementation, the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support LAN wake capabilities in the following ways, which are with ACPI only: · Through the PCI bus PME# signal for PCI 2.2­compliant LAN designs · Through the onboard LAN subsystem · Through a CNR-based LAN subsystem 1.14.2.4 Instantly Available Technology CAUTION For Instantly Available technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing Instantly Available technology can damage the power supply. Refer to Section 2.11.3 on page 80 for additional information. Instantly Available technology enables the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 to enter the ACPI S3 (Suspend to RAM) sleep state. While in the S3 sleep state, the computer will appear to be off; the power supply fan is off, and the front panel LED is amber if dual colored or off if single colored. When signaled by a wake-up device or event, the system quickly returns to its last known wake state. Table 12 on page 41 lists the devices and events that can wake the computer from the S3 state. The desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2 support the PCI Bus Power Management Interface Specification. For information on the versions of this specification, see Section 1.5. Add-in boards that also support this specification can participate in power management and can be used to wake the computer. The use of Instantly Available technology requires operating system support and PCI 2.2­compliant add-in cards and drivers. 44 Product Description The standby power indicator LED shows that power is still present at the RIMM, PCI bus, AGP, and CNR connectors, even when the computer appears to be off. Figure 11 shows the location of the standby power indicator LED. CR7F1 OM14442 OM14442 Figure 11. Location of the Standby Power Indicator LED 1.14.2.5 Wake from USB USB bus activity wakes the computer from an ACPI S1 or S3 state. NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB. 1.14.2.6 Wake from PS/2 Keyboard PS/2 keyboard activity wakes the computer from an ACPI S1 or S3 state. 1.14.2.7 PME# Wake-up Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state (with BIOS support). 45 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 46 2 Technical Reference What This Chapter Contains 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 Introduction.47 Memory Map .47 Fixed I/O Map.48 DMA Channels .49 PCI Configuration Space Map .49 Interrupts .50 PCI Interrupt Routing Map .51 Connectors .53 Jumper Blocks.74 Mechanical Considerations.76 Electrical Considerations .79 Thermal Considerations.82 Reliability .83 Environmental .84 Regulatory Compliance .85 2.1 Introduction Sections 2.2­2.6 contain several stand-alone tables. Table 15 describes the system memory map, Table 16 shows the I/O map, Table 17 lists the DMA channels, Table 18 defines the PCI configuration space map, and Table 19 describes the interrupts. 2.2 Memory Map Table 15. System Memory Map Address Range (decimal) Address Range (hex) Size Description 1024 K - 2097152 K 100000 - 7FFFFFFF 2047 MB Extended memory 960 K - 1024 K F0000 F0000 - FFFFF 64 KB Run-time BIOS 896 K - 960 K E0000 E0000 - EFFFF 64 KB Reserved 800 K - 896 K C8000 C8000 - DFFFF 96 KB Available high DOS memory (open to the PCI bus) 640 K - 800 K A0000 A0000 - C7FFF 160 KB Video memory and BIOS 639 K - 640 K 9FC00 9FC00 - 9FFFF 1 KB Extended BIOS data (movable by memory manager software) 512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory 0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory 47 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 2.3 Fixed I/O Map Table 16. Fixed I/O Map Address (hex) Size Description 0000 - 00FF 256 bytes Used by the desktop boards D850EMD2/D850EMV2 D850EMD2/D850EMV2. Refer to the ICH2 data sheet for dynamic addressing information. One of these ranges: 0220 - 022F 0240 - 024F 16 bytes Audio 0228 - 022F (Note 1) 0278 - 027F (Note 1) 02E8 - 02EF (Note 1) 02F8 - 02FF (Note 1) 0376 0377, bits 6:0 0378 - 037F 03B0 - 03BB 03C0 - 03DF 03E8 - 03EF 03F0 - 03F5 03F6 03F8 - 03FF 04D0 - 04D1 LPTn + 400 0CF8 - 0CFB (Note 2) 0CF9 (Note 3) 0CFC - 0CFF FFA0 - FFA7 FFA8 - FFAF 8 bytes 8 bytes 8 bytes 8 bytes 1 byte 7 bits 8 bytes 12 bytes 32 bytes 8 bytes 6 bytes 1 byte 8 bytes 2 bytes 8 bytes 4 bytes 1 byte 4 bytes 8 bytes 8 bytes LPT3 LPT2 COM4 / video (8514A) COM2 Secondary IDE channel command port Secondary IDE channel status port LPT1 Intel 82850E 82850E MCH Intel 82850E 82850E MCH COM3 Diskette channel 1 Primary IDE channel command port COM1 Edge / level triggered PIC ECP port, LPTn base address + 400h PCI configuration address register Turbo and reset control register PCI configuration data register Primary bus master IDE registers Secondary bus master IDE registers Notes: 1. Dword access only 3. Default, but can be changed to another address range 2. Byte access only NOTE Some additional I/O addresses are not available due to ICH2 address aliassing. For information about 48 Refer to ICH2 addressing Section 1.3, page 18 Technical Reference 2.4 DMA Channels Table 17. DMA Channels DMA Channel Number Data Width System Resource 0 8 or 16 bits Open 1 8 or 16 bits Parallel port 2 8 or 16 bits Diskette drive 3 8 or 16 bits Parallel port (for ECP or EPP) 4 8 or 16 bits DMA controller 5 16 bits Open 6 16 bits Open 7 16 bits Open 2.5 PCI Configuration Space Map Table 18. PCI Configuration Space Map Bus Number (hex) Device Number (hex) Function Number (hex) Description 00 00 00 Memory controller of Intel 82850E 82850E component 00 01 00 PCI to AGP bridge 00 1E 00 Hub link to PCI bridge 00 1F 00 Intel 82801BA 82801BA ICH2 PCI to LPC bridge 00 1F 01 IDE controller 00 1F 02 USB 00 1F 03 SMBus controller 00 1F 04 USB 00 1F 05 AC '97 audio controller (optional) 00 1F 06 AC '97 modem controller (optional) 01 00 00 Add-in AGP adapter card 02 00 01 OHCI controller 1 (Note 1) 02 00 02 OHCI controller 2 (Note 1) 02 00 03 EHCI controller (Note 1) 02 08 00 LAN controller (optional) 02 09 00 PCI bus connector 1 02 0A 00 PCI bus connector 2 02 0B 00 PCI bus connector 3 02 0C 00 PCI bus connector 4 (Note 2) 02 0D 00 PCI bus connector 5 (Note 2) Notes: 1. USB 2.0 option only 2. Desktop Board D850EMV2 D850EMV2 only 49 Intel Desktop Board D850EMD2/D850EMV2 D850EMD2/D850EMV2 Technical Product Specification 2.6 Interrupts The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the Advanced Programmable Interrupt Controller (APIC) portion of the ICH4 component. The PIC is supported in Windows 98 SE and Windows ME and uses the first 16 interrupts. The APIC is supported in Windows 2000 and Windows XP and supports a total of 24 interrupts. Table 19. Interrupts IRQ System Resource NMI I/O channel check 0 Reserved, interval timer 1 Reserved, keyboard buffer full 2 Reserved, cascade interrupt from slave PIC 3 COM2 (Note 1) 4 COM1 (Note 1) 5 LPT2 (Plug and Play option)/User available 6 Diskette drive 7 LPT1 (Note 1) 8 Real-time clock 9 Reserved for ICH2 system management bus 10 User available 11 User available 12 Onboard mouse port (if present, else user available) 13 Reserved, math coprocessor 14 Primary IDE (if present, else user available) 15 Secondary IDE (if present, else user available) 16 (Note 2) AGP video (through PIRQA) 17 (Note 2) AC '97 audio/user available (through PIRQB) 18 (Note 2) User available (through PIRQC) 19 (Note 2) ICH2 USB controller #1 (through PIRQD) 20 (Note 2) ICH2 LAN (optional) (through PIRQE) 21 (Note 2) OHCI controller #2/user available (through PIRQF) 22 (Note 2) EHCI controller #1/user available (through PIRQG) 23 (Note 2) ICH2 USB controller #2/user available (through PIRQH) Notes: 1. 50 Default, but can be changed to another IRQ. 2. Available in APIC mode only. Technical Reference 2.7 PCI Interrupt Routing Map This section describes interrupt sharing and how the interrupt signals are connected between the PCI bus connectors and onboard PCI devices. The PCI specification specifies how interrupts can be shared between devices attached to the PCI bus. In most cases, the small amount of latency added by sharing interrupts does not affect the operation or throughput of the devices. In some special cases where maximum performance is needed from a device, a PCI device should not share an interrupt with other PCI devices. Use the following information to avoid sharing an interrupt with a PCI add-in card. PCI devices are categorized as follows to specify their inter