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HP Dc7700 HP Compaq dx7300 and dc7700 Business PC Technical Reference Guide, 1 - Page 134

System Board Header Pinouts

UPC - 882780715318

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Power and Signal Distribution Power Button/LED, HD LED Header P5 (USDT, SFF, ST) HD LED + 1 HD LED - 3 GND5 Pwr Btn 7 Chassis ID0 9 GND 11 Therm Diode A 13 2 PS LED + 4 PS LED - 8 GND 10 Chassis ID1 12 NC 14 Therm Diode C Power Button/LED, HD LED Header P5 (MT, CMT) HD LED Cathode 1 HD LED Anode 3 GND5 M Reset 7 +5 VDC 9 NC 11 GND 13 Chassis ID2 15 2 PS LED Cathode 4 PS LED Anode 6 Pwr Btn 8 GND 10 NC 12 GND 16 +5 VDC Chassis ID0 17 18 Chassis ID1 Front Panel Audio Header P23 Mic In Left (Tip) 1 Mic In Right (Sleeve) 3 HP Out Right 5 Sense Send 7 HP Out Left 9 2 Analog GND 4 Front Audio Detect# 6 Sense_1 Return 10 Sense_2 Return Serial Port A Header P54 UART1 DCD- 1 UART1 RX DATA 3 UART1 TX DATA 5 UART1 DTR 7 GND 9 2 UART1 DSR4 UART1 RTS6 UART1 CTS8 UART1 RI10 Comm A Detect- Serial Port B Header P52 UART2 DTR- 1 UART2 CTS- 3 UART2 TX DATA 5 GND 7 +5.0V 9 UART2 RTS- 11 UART2 DCD- 13 +12V 15 2 UART2 RX DATA 4 UART2 DSR6 UART2 RI8 GND 10 +3.3V aux 12 Comm B Detect 14 -12V Hood Lock Header P124 Hood Lock 1 2 Coil Conn GND 5 4 +12V 6 Hood Unlock Hood Sense Header P125 1 Hood SW Detect 2 GND 3 Hood Sensor NOTE: No polarity consideration required for connection to speaker header P6. NC = Not connected Figure 7-8. System Board Header Pinouts 7-14 www.hp.com Technical Reference Guide

Section	Page
Title	1
Contents	3
Chap_1_Introduction_final_review.pdf	7
Introduction	7
1.1 About this Guide	7
1.1.1 Online Viewing	7
1.1.2 Hardcopy	7
1.2 Additional Information Sources	7
1.3 Model Numbering Convention	7
1.4 Serial Number	9
1.5 Notational Conventions	9
1.5.1 Values	9
1.5.2 Ranges	9
1.5.3 Register Notation and Usage	9
1.5.4 Bit Notation and Byte Values	9
1.6 Common Acronyms and Abbreviations	10
Chap_2_System_Overview_final.pdf	17
System Overview	17
2.1 Introduction	17
2.2 Features	18
2.3 Mechanical Design	20
2.3.1 Cabinet Layouts	21
2.3.2 Chassis Layouts	26
2.3.3 Board Layouts	30
2.4 System Architecture	33
2.4.1 Intel Processor Support	35
2.4.2 Chipset	36
2.4.3 Support Components	37
2.4.4 System Memory	37
2.4.5 Mass Storage	38
2.4.6 Serial and Parallel Interfaces	38
2.4.7 Universal Serial Bus Interface	38
2.4.8 Network Interface Controller	38
2.4.9 Graphics Subsystem	39
2.4.10 Audio Subsystem	39
2.5 Specifications	40
Chap_3_Processor_final_review.pdf	45
Processor/Memory Subsystem	45
3.1 Introduction	45
3.2 Intel Pentium Processors	46
3.2.1 Intel Processor Overview	46
3.2.2 Processor Upgrading	48
3.3 Memory Subsystem	48
Chap_4_System_Support_final_review.pdf	53
System Support	53
4.1 Introduction	53
4.2 PCI Bus Overview	53
4.2.1 PCI 2.3 Bus Operation	54
4.2.2 PCI Express Bus Operation	58
4.2.3 Option ROM Mapping	60
4.2.4 PCI Interrupts	60
4.2.5 PCI Power Management Support	60
4.2.6 PCI Connectors	61
4.3 System Resources	63
4.3.1 Interrupts	63
4.3.2 Direct Memory Access	68
4.4 Real-Time Clock and Configuration Memory	71
4.4.1 Clearing CMOS	71
4.4.2 Standard CMOS Locations	72
4.5 System Management	72
4.5.1 Security Functions	72
4.5.2 Power Management	74
4.5.3 System Status	75
4.5.4 Thermal Sensing and Cooling	75
4.6 Register Map and Miscellaneous Functions	76
4.6.1 System I/O Map	76
4.6.2 SCH5317 I/O Controller Functions	77
Chap_5_Input-Output_Interfaces_final_review.pdf	79
Input/Output Interfaces	79
5.1 Introduction	79
5.2 SATA Interfaces	79
5.2.1 SATA Programming	79
5.2.2 SATA Connector	81
5.2.3 RAID Functionality	81
5.3 Diskette Drive Interface	82
5.3.1 Diskette Drive Programming	82
5.3.2 Diskette Drive Connector	86
5.4 Serial Interface	87
5.4.1 Serial Connector	87
5.4.2 Serial Interface Programming	87
5.5 Parallel Interface	89
5.5.1 Standard Parallel Port Mode	89
5.5.2 Enhanced Parallel Port Mode	89
5.5.3 Extended Capabilities Port Mode	90
5.5.4 Parallel Interface Programming	90
5.5.5 Parallel Interface Connector	92
5.6 Keyboard/Pointing Device Interface	93
5.6.1 Keyboard Interface Operation	93
5.6.2 Pointing Device Interface Operation	95
5.6.3 Keyboard/Pointing Device Interface Programming	95
5.6.4 Keyboard/Pointing Device Interface Connector	99
5.7 Universal Serial Bus Interface	100
5.7.1 USB Data Formats	101
5.7.2 USB Programming	102
5.7.3 USB Connector	103
5.7.4 USB Cable Data	104
5.8 Audio Subsystem	105
5.8.1 HD Audio Controller	106
5.8.2 HD Audio Interface	106
5.8.3 HD Audio Codec	107
5.8.4 Audio Programming	108
5.8.5 Audio Specifications	110
5.9 Network Interface Controller	111
5.9.1 Wake-On-LAN Support	112
5.9.2 Alert Standard Format Support	112
5.9.3 Power Management Support	112
5.9.4 NIC Programming	113
5.9.5 NIC Connector	113
5.9.6 NIC Specifications	114
Chap_6_Integrated_Graphics_final_review.pdf	115
Integrated Graphics Subsystem	115
6.1 Introduction	115
6.2 Functional Description	116
6.3 Display Modes	118
6.4 Upgrading Graphics	119
6.5 VGA Monitor Connector	120
Chap_7_Power_and_Signal_final_review.pdf	121
Power and Signal Distribution	121
7.1 Introduction	121
7.2 Power Supply Assembly/Control	121
7.2.1 Power Supply Assembly	122
7.2.2 Power Control	124
7.2.3 Power Management	127
7.3 Power Distribution	128
7.4 Signal Distribution	131
Chap_8_BIOS_ROM_final_review.pdf	135
BIOS ROM	135
8.1 Introduction	135
8.2 ROM Flashing	136
8.2.1 Upgrading	136
8.2.2 Changeable Splash Screen	137
8.3 Boot Functions	137
8.3.1 Boot Device Order	137
8.3.2 Network Boot (F12) Support	138
8.3.3 Memory Detection and Configuration	138
8.3.4 Boot Error Codes	139
8.4 Setup Utility	140
8.5 Client Management Functions	149
8.5.1 System ID and ROM Type	150
8.5.2 Temperature Status	150
8.5.3 Drive Fault Prediction	150
8.6 SMBIOS	151
8.7 USB Legacy Support	151
App_A_Error_Messages__amp__Codes_final_review.pdf	153
A.1 Introduction	153
A.2 Beep/Power LED Codes	153
A.3 Power-On Self Test (POST) Messages	154
A.4 System Error Messages (1xx-xx)	157
A.5 Memory Error Messages (2xx-xx)	158
A.6 Keyboard Error Messages (30x-xx)	159
A.7 Printer Error Messages (4xx-xx)	160
A.8 Video (Graphics) Error Messages (5xx-xx)	160
A.9 Diskette Drive Error Messages (6xx-xx)	161
A.10 Serial Interface Error Messages (11xx-xx)	162
A.11 Modem Communications Error Messages (12xx-xx)	163
A.12 System Status Error Messages (16xx-xx)	164
A.13 Hard Drive Error Messages (17xx-xx)	165
A.14 Hard Drive Error Messages (19xx-xx)	167
A.15 Video (Graphics) Error Messages (24xx-xx)	168
A.16 Audio Error Messages (3206-xx)	168
A.17 DVD/CD-ROM Error Messages (33xx-xx)	169
A.18 Network Interface Error Messages (60xx-xx)	169
A.19 SCSI Interface Error Messages (65xx-xx, 66xx-xx, 67xx-xx)	170
A.20 Pointing Device Interface Error Messages (8601-xx)	171
App_B_ASCII_Character_Set_final_review.pdf	173
B.1 Introduction	173
App_C_Keyboard_final_review.pdf	177
C.1 Introduction	177
C.2 Keystroke Processing	177
C.2.1 PS/2-Type Keyboard Transmissions	179
C.2.2 USB-Type Keyboard Transmissions	180
C.2.3 Keyboard Layouts	180
C.2.4 Keys	183
C.2.5 Keyboard Commands	186
C.2.6 Scan Codes	187
C.3 Connectors	193

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7-14

www.hp.com

Technical Reference Guide

Power and Signal Distribution

NOTE:

No polarity consideration required for connection to speaker header P6.

NC = Not connected

Figure 7-8.

System Board Header Pinouts

UART1 RX DATA 3

UART1 TX DATA 5

UART1 DTR 7

GND 9

4 UART1 RTS-

8 UART1 RI-

6 UART1 CTS-

10 Comm A Detect-

Serial Port A

Header P54

UART1 DCD- 1

2 UART1 DSR-

UART2 DTR- 1

UART2 CTS- 3

UART2 TX DATA 5

GND 7

+5.0V 9

2 UART2 RX DATA

4 UART2 DSR-

8 GND

6 UART2 RI-

10 +3.3V aux

UART2 RTS- 11

UART2 DCD- 13

12 Comm B Detect

+12V 15

14 -12V

Serial Port B

Header P52

Hood Lock 1

GND 5

2 Coil Conn

4 +12V

6 Hood Unlock

Hood Lock

Header P124

1 Hood SW Detect

2 GND

3 Hood Sensor

Hood Sense

Header P125

HD LED + 1

HD LED - 3

GND5

2 PS LED +

4 PS LED -

8 GND

Pwr Btn 7

GND 11

Therm Diode A 13

12 NC

Chassis ID0 9

14 Therm Diode C

Power Button/LED, HD LED

Header P5 (USDT, SFF, ST)

10 Chassis ID1

HD LED Cathode 1

HD LED Anode 3

GND5

M Reset 7

+5 VDC 9

2 PS LED Cathode

4 PS LED Anode

8 GND

6 Pwr Btn

10 NC

NC 11

GND 13

12 GND

Chassis ID2 15

16 +5 VDC

Power Button/LED, HD LED

Header P5 (MT, CMT)

18 Chassis ID1

Chassis ID0 17

Mic In Right (Sleeve) 3

HP Out Right 5

Sense Send 7

HP Out Left 9

4 Front Audio Detect#

6 Sense_1 Return

10 Sense_2 Return

Front Panel Audio

Header P23

Mic In Left (Tip) 1

2 Analog GND