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Product Description 1.4 Online Support To find information about... Intel Desktop Boards D915PCY and D915PCM under "Desktop Board Products" or "Desktop Board Support" Available configurations for the Desktop Board D915PCY Available configurations for the Desktop Board D915PCM Processor data sheets ICH6 addressing Custom splash screens Audio software and utilities LAN software and drivers Visit this World Wide Web site: http://www.intel.com/design/motherbd http://support.intel.com/support/motherboards/desktop http://developer.intel.com/design/motherbd/cy/cy_available.htm http://developer.intel.com/design/motherbd/cm/cm_available.htm http://www.intel.com/design/litcentr http://developer.intel.com/design/chipsets/datashts http://intel.com/design/motherbd/gen_indx.htm http://www.intel.com/design/motherbd http://www.intel.com/design/motherbd 1.5 Processor The boards are designed to support Intel Pentium 4 processors in an LGA775 processor socket with an 800 or 533 MHz system bus. See the Intel web site listed below for the most up-to-date list of supported processors. For information about... Supported processors for the D915PCY board Supported processors for the D915PCM board Refer to: http://www.intel.com/design/motherbd/cy/cy_proc.htm http://www.intel.com/design/motherbd/cm/cm_proc.htm CAUTION Use only the processors listed on web site above. Use of unsupported processors can damage the board, the processor, and the power supply. INTEGRATOR'S NOTE Use only ATX12V-compliant power supplies. For information about Power supply connectors Refer to Section 2.8.2.2, page 66 19

Section	Page
Intel® Desktop Boards D915PCY/D915PCM Technical Product Specification	1
Revision History	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Other Common Notation	4
Contents	5
1 Product Description	11
1.1 PCI Bus Terminology Change	11
1.2 Board Differences	11
1.3 Overview	12
1.3.1 Feature Summary	12
1.3.2 Manufacturing Options	13
1.3.3 Board Layouts	14
1.3.4 Block Diagram	18
1.4 Online Support	19
1.5 Processor	19
1.6 System Memory	20
1.6.1 Memory Configurations	21
1.6.1.1 Dual Channel (Interleaved) Mode Configurations	22
1.6.1.2 Single Channel (Asymmetric) Mode Configurations	24
1.7 Intel® 915P Chipset	25
1.7.1 USB	25
1.7.2 IDE Support	25
1.7.2.1 Parallel ATE IDE Interface	25
1.7.2.2 Serial ATA Interfaces	26
1.7.2.3 SCSI Hard Drive Activity LED Connector (Optional)	27
1.7.3 Real-Time Clock, CMOS SRAM, and Battery	27
1.8 PCI Express Connectors	27
1.9 I/O Controller	28
1.9.1 Serial Ports	28
1.9.2 Parallel Port	28
1.9.3 Diskette Drive Controller	28
1.9.4 Keyboard and Mouse Interface	28
1.10 Audio Subsystem	29
1.10.1 Audio Subsystem Software	29
1.10.2 Audio Connectors	29
1.10.3 Intel® High Definition Audio Subsystem	30
1.11 LAN Subsystem	31
1.11.1 Intel® 82562EZ Physical Layer Interface Device	31
1.11.1.1 RJ-45 LAN Connector with Integrated LEDs	32
1.11.2 Alert Standard Format (ASF) Support	32
1.11.3 LAN Subsystem Software	33
1.11.4 Intel® Wireless Connect Technology (Optional)	33
1.12 Hardware Management Subsystem	33
1.12.1 Hardware Monitoring and Fan Control ASIC	33
1.12.2 Thermal Monitoring	34
1.12.3 Fan Monitoring	35
1.12.4 Chassis Intrusion and Detection	36
1.13 Power Management	36
1.13.1 ACPI	36
1.13.1.1 System States and Power States	37
1.13.1.2 Wake-up Devices and Events	39
1.13.2 Hardware Support	39
1.13.2.1 Power Connector	40
1.13.2.2 Fan Connectors	40
1.13.2.3 LAN Wake Capabilities	41
1.13.2.4 Instantly Available PC Technology	41
1.13.2.5 Resume on Ring	42
1.13.2.6 Wake from USB	42
1.13.2.7 Wake from PS/2 Devices	42
1.13.2.8 PME# Signal Wake-up Support	42
1.13.2.9 WAKE# Signal Wake-up Support	42
1.13.2.10 +5 V Standby Power Indicator LED	43
1.14 Trusted Platform Module (Optional)	44
1.14.1 System Requirements	44
1.14.2 Warning of Potential Data Loss	44
1.14.3 Security Precautions	45
1.14.3.1 Password Procedures	45
1.14.3.2 Emergency Recovery File Back Up Procedures	46
1.14.3.3 Hard Drive Image Backup Procedures	46
1.14.3.4 Clear Text Backup (Optional)	46
1.14.4 Trusted Platform Module Ownership	46
1.14.5 Enabling the Trusted Platform Module	47
1.14.6 Assuming Trusted Platform Module Ownership	47
1.14.7 Recovery Procedures	48
1.14.7.1 Recovering from Hard Disk Failure	48
1.14.7.2 Recovering from Desktop Board or TPM Failure	48
1.14.8 Clearing Trusted Platform Module Ownership	49
1.14.9 Software Support	50
2 Technical Reference	51
2.1 Introduction	51
2.2 Memory Resources	51
2.2.1 Addressable Memory	51
2.2.2 Memory Map	53
2.3 DMA Channels	53
2.4 Fixed I/O Map	54
2.5 PCI Configuration Space Map	55
2.6 Interrupts	56
2.7 PCI Conventional Interrupt Routing Map	56
2.8 Connectors	58
2.8.1 Back Panel Connectors	58
2.8.2 Component-side Connectors	60
2.8.2.1 Chassis Fan Connectors	65
2.8.2.2 Power Supply Connectors	66
2.8.2.3 Add-in Card Connectors	67
2.8.2.4 Auxiliary Front Panel Power/Sleep LED Connector	68
2.8.2.5 Front Panel Connector	68
2.8.2.5.1 Hard Drive Activity LED Connector [Yellow]	69
2.8.2.5.2 Reset Switch Connector [Purple]	69
2.8.2.5.3 Power/Sleep LED Connector [Green]	69
2.8.2.5.4 Power Switch Connector [Red]	69
2.8.2.6 Front Panel USB Connectors	69
2.8.2.7 Front Panel IEEE 1394a Connectors (Optional)	70
2.9 Jumper Block	71
2.10 Mechanical Considerations	72
2.10.1 D915PCY Board Form Factor	72
2.10.2 D915PCM Board Form Factor	73
2.10.3 I/O Shield	74
2.11 Electrical Considerations	75
2.11.1 DC Loading	75
2.11.2 Add-in Board Considerations	75
2.11.3 Fan Connector Current Capability	76
2.11.4 Power Supply Considerations	76
2.12 Thermal Considerations	77
2.13 Reliability	79
2.14 Environmental	80
2.15 Regulatory Compliance	80
2.15.1 Safety Regulations	80
2.15.2 EMC Regulations	81
2.15.2.1 FCC Compliance Statement (USA)	81
2.15.2.2 Canadian Compliance Statement	82
2.15.3 European Union Declaration of Conformity Statement	82
2.15.4 Product Ecology Statements	82
2.15.4.1 Disposal Considerations	83
2.15.4.2 Recycling Considerations	83
2.15.5 Product Certification Markings (Board Level)	83
3 Overview of BIOS Features	85
3.1 Introduction	85
3.2 BIOS Flash Memory Organization	86
3.3 Resource Configuration	86
3.3.1 PCI Autoconfiguration	86
3.3.2 PCI IDE Support	86
3.4 System Management BIOS (SMBIOS)	87
3.5 Legacy USB Support	87
3.6 BIOS Updates	88
3.6.1 Language Support	88
3.6.2 Custom Splash Screen	88
3.7 Boot Options	89
3.7.1 CD-ROM Boot	89
3.7.2 Network Boot	89
3.7.3 Booting Without Attached Devices	89
3.7.4 Changing the Default Boot Device During POST	89
3.8 Fast Booting Systems with Intel® Rapid BIOS Boot	90
3.8.1 Peripheral Selection and Configuration	90
3.8.2 Intel Rapid BIOS Boot	90
3.9 BIOS Security Features	91
4 Error Messages and Beep Codes	93
4.1 BIOS Error Messages	93
4.2 Port 80h POST Codes	95
4.3 Bus Initialization Checkpoints	99
4.4 Speaker	100