B&B Electronics PC Watchdog Timer Card ATXWDT Especificaciones Pagina 32
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SRMK2 Internet Server Technical Product Specification 32
• Support for isochronous and asynchronous transfer types over the same set of wires
• 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.
3.9 I/O Controller
The FDC37B782 I/O controller from SMSC is an ISA Plug and Play-compatible, multifunctional
I/O device that provides the following features:
• One serial port
• FIFO support on both serial and diskette drive interfaces
• PS/2-style mouse and keyboard interfaces
• Support for serial IRQ packet protocol
• Intelligent power management, including:
− Shadowed write-only registers for ACPI compliance
− Programmable wake up event interface
3.9.1 Serial Port
The motherboard supports one serial port via 9-pin D-Sub connector. The populated serial port is
located on the back panel. The serial port is NS16C550-compatible UARTs and support data
transfers at speeds up to 460 Kbits/sec with BIOS support. Additionally, this port supports the
Wake On Ring functionality.
3.9.2 Diskette Drive Controller
The I/O controller supports a single diskette drive that is compatible with the 82077 diskette drive
controller and support both PC-AT
†
and PS/2 modes. The baseboard supports only a slimline
floppy drive interface connector.
3.9.3 Keyboard and Mouse Interface
The PS/2 keyboard and mouse connectors are located on the back panel. The +5V lines to these
connectors are protected with a PolySwitch
†
circuit that, like a self-healing fuse, reestablishes the
connection after an overcurrent condition is removed.
! NOTE
The mouse and keyboard can be plugged into either of the PS/2 connectors. Turn off power to
the computer before connecting or disconnecting a keyboard or mouse.
3.9.4 Real-Time Clock, CMOS SRAM, and Battery
The real-time clock is provided by the SMC FDC37B782 Super I/O chip and is compatible with
DS1287 and MC146818 components. The clock provides a time-of-day clock and a multicentury
- SRMK2 Internet Server 1
- Revision History 2
- !! NOTE 3
- CAUTION 3
- WARNING 3
- Contents 5
- Conventions and Terminology 10
- 1 Introduction 11
- 2 Chassis Description 13
- 2.1.3 Front View of Chassis 14
- 2.1.4 Rear View of Chassis 15
- 2.2.1 AC Power Supply 15
- 2.2.1.3 AC Power Line 16
- Wire lengths should vary to 18
- 2.2.2 DC Power Supply 19
- 2.2.3 BTU information 19
- 2.2.4 System Cooling 20
- Cable Purpose 21
- Description 21
- Figure 9: Internal cables 22
- 2.3 System Configuration 23
- 3.1 Overview 24
- 3.2 Serverboard Layout 25
- !! NOTE 27
- 3.4 Chipset 28
- 3.5 Memory 30
- 3.6 SCSI Host bus Interface 31
- 3.7 IDE Interface 31
- 3.8 USB 31
- 3.9 I/O Controller 32
- 3.12 Hardware Monitor 34
- 3.14 Speaker 35
- 3.15 Fan Support 36
- 3.16 Baseboard Programming 36
- 3.16.3 SMI and NMI Routing 37
- 3.17.2 Midboard Connectors 41
- Pin Signal Name 42
- 3.20 DC Voltage Regulation 53
- 4 PCI Riser Board 54
- PIRQA INTA 55
- PIRQB INTB 55
- PIRQC INTC 55
- PIRQD INTD 55
- Figure 20: PCI riser board 56
- 5 Front Panel Board 57
- LED Description 58
- 6 SCSI Backplane 59
- 7 BIOS Description 61
- 7.2.1 Configuration Utility 62
- 7.3 System BIOS 63
- 7.3.1.7 Boot Splash Screen 67
- 7.3.2 Performance Features 67
- Name Description Default 67
- 7.3.2.2 Cache State on Boot 68
- 7.3.3 Reliability Features 69
- 7.3.3.4 ECC and SMI Support 70
- 7.3.4 System Services 71
- 7.3.4.1 New Cache Services 72
- 7.3.4.2 Get Version Info 73
- Returns Description 73
- 7.3.4.3 Processor Info 74
- 7.3.5 Boot Options 74
- 7.3.5.1 Quiet Boot 74
- 7.3.5.2 PXE Boot 74
- 7.3.6 OEM Customization 75
- offset 21h is 75
- Bit Definition 78
- 7.3.7 SMBIOS Support 78
- 7.3.8 Soft Power Switch 79
- 7.3.10 ACPI Support 80
- 7.4.1 LAN Alerts 81
- 7.4.2 WatchDog Timer (WDT) 81
- 7.4.3 Paging Support 82
- 9.1 Error Sources and Types 84
- 9.2 Error Handlers 84
- 9.3 ISA Bus Error 85
- 9.3.2 Processor Bus Error 86
- 9.3.3 Memory Bus Error 87
- 9.3.4 System Limit Error 87
- 9.3.5 Processor Failure 87
- Error Message Description 88
- 10 BIOS Setup Program 90
- 10.2 Main Menu 91
- 10.1 Maintenance Menu 91
- 10.3 Advanced Menu 92
- 10.4 Security Menu 93
- 10.5 Boot Menu 93
- 10.6 System Management Menu 94
- 10.7 Exit Menu 96
- 11 Certification 97
- 11.3.1 Japan 98
- 11.3.2 Canada 98
- 11.3.4 Taiwan (BSMI) 99
- 11.4.1 Japan 99
- 11.4.2 Canada 99
- 11.5.1 SRMK2D 100
- 11.5.2 Taiwan (BSMI) 100
- Declarations 101
- 11.7 Environmental Limits 101
- 12.1 Reliability 102
- 12.2 Serviceability 102
- 13 Compatibility Testing 103
- 14.1 Online Support 104
- 14.2 Specifications 104
- Appendix A 107
- CMOS/NVRAM commands 108
- >PutPagerNum 918005991234 111
- Password commands 112
- Help command 112
- Security 113
- Figure 28: Password prompt 114
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