3Com 3C905C-TX-M, 3C905C-TX manual RJ-45 Connector Pin Assignments, 100BASE-TX Operation

Page 72

72APPENDIX A: SPECIFICATIONS AND CABLING REQUIREMENTS

100BASE-TX Operation

100BASE-TX is the IEEE 802.3u standard for Fast Ethernet signaling over Category 5 UTP or STP wire at 100 Mbps.

Based on an extension to the IEEE 802.3 Ethernet speciﬁcation, Fast Ethernet characteristics include:

■A data rate of 100 Mbps.

■A broadcast architecture.

■A speciﬁc media-access control (MAC) scheme.

A wiring topology using 100BASE-TX speciﬁes a wiring hub, cable arranged in a star conﬁguration, and Category 5 UTP or STP wiring. Each node has a separate cable run that must not exceed 100 meters (328 ft) from the node to the hub.

RJ-45 Connector Pin Assignments

Figure 14 shows the RJ-45 connector pin assignments for the 3C905C NIC.

Figure 14 RJ-45 Connector Pin Assignments

	TX
	DATA
	ACT
	10	L
	100	N
	100	K
		K

1TD+

2TD_

3RD+

6RD_

1 2 3 4 5 6 7 8

Image 72

Contents Part No -1488-000 Published March 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Windows 95/98 and Windows NT Driver Installation Troubleshooting and Diagnostics 3COM DMI Agent Installation Figures Tables About this Guide ConventionsIcon Description Year 2000 Compliance Convention DescriptionIntroduction 3C905C NIC OverviewFeatures Using Remote Wake-UpUsing the Managed PC Boot Agent MBA Software Multiple NIC Installations and Remote Wake-UpRemote Wake-Up Requirements Using DynamicAccess Software Using the Workgroup Keep-Alive Packet Using Remote System AlertsRemote System Alerts Requirements Supported Remote System AlertsUsing Desktop Management Interface DMI Network Interface Card Installation Installation Task InstructionsOverview Preparing for Installation Running the Preinstallation Program Inserting the NICTo install the NIC in your PC Installing the NIC Remove slot cover Insert NIC Secure the NIC with the screw you removed in stepConnecting the Remote Wake-Up Cable Contact your PC manufacturer for the Remote Wake-Up cableConnecting the Remote Wake-Up Cable Connecting SOS or SMBus Cables for Remote System Alerts Connecting to the NetworkNetwork Cable Required Maximum Environment Cable Length Connecting to the Network Page Driver Installation Installing the DriverWindows NT WindowsTurn on the power to the PC. Windows 95 detects the NIC If the Update Device Driver Wizard startsIf the New Hardware Found dialog box appears You must restart the PC to complete the installation Insert the Windows 95 CD or diskette, and then click OKTurn on the power to the PC Insert EtherDisk diskette 1 in drive A, and then click NextInsert the Windows 98 CD or diskette, and then click OK Click FinishWindows NT Click the Adapters tabClick Add Click Close Click Add Adapter Verifying Successful Installation Windows 95 and WindowsClick OK Installing Multiple NICs Double-click the File Manager iconRepeat the process for each additional NIC to be installed Select the Adapters tab Click AddInsert EtherDisk diskette 2 when prompted Close the Network screenInstalling the NetWare Client Driver About 3Com Intelligent Auto Install SoftwareNET Ware Client Intelligent Auto Install Requirements Running the Intelligent Auto Install ProgramInstalling the NetWare Server Driver Obtaining NetWare Loadable ModulesNetWare NetWare Server NLM NameSave and exit the ﬁle, and then reboot the server NetWare 4.10Multiple NICs Verifying the PCI Slot Number Selected NIC Screen Conﬁguration Methods Method Description RequirementsDefault NIC Settings Method DescriptionOption Description Changing General NIC Conﬁguration Settings Option Description SettingsClick the Conﬁguration tab General ScreenConﬁguring the Managed PC Boot Agent MBA Enabling or Disabling the Boot ROM SettingUnder Network Parameter, select the setting to be changed Click OK to save the changes and exit the programBooting From the Network Click OK to save the setting and exit the programBBS BIOS-Compatible PCs Make sure that the NIC boot ROM setting is EnabledReboot the PC Non-BBS BIOS-Compatible PCsChange the MBA default boot setting from Local to Network Page Troubleshooting Diagnostics Troubleshooting the InstallationTip Description Accessing 3Com Support Databases Accessing the 3Com KnowledgebaseAccessing the 3Com NIC Help System Accessing Release Notes and Frequently Asked Questions Click the Support tabInterpreting the LEDs Running the NIC Diagnostics Tests Ensure that the hub or switch is powered onClick the Diagnostics tab Diagnostics Screen To Run the Network TestOn the ﬁrst PC, enable Auto Echo To Run the NIC TestTo Run the Remote Wake-Up Test On the second PC, run the Remote Wake-Up TestClick Test Remote Wake-Up Restart. The PC shuts down Troubleshooting Remote Wake-Up Make sure that Remote Wake-Up is enabled on the NICCheck the PC Bios Perform the Remote Wake-Up TestViewing Network Statistics Click the Statistics tabUsing the 3Com Icon in the Windows System Tray Removing NIC Software Click the Device Manager tabRemoving NIC Software Frequently Asked Questions Question AnswerQuestionAnswer Fast IP, part of 3Coms DynamicAccess software, improves Specifications Hardware SpeciﬁcationsStandards Conformance Cabling RequirementsTwisted-Pair Cable 10BASE-T Operation Category UseRJ-45 Connector Pin Assignments 100BASE-TX OperationConfiguration Client PC RequirementsInstalling DynamicAccess Software Restart the PCConﬁguring DynamicAccess Software Removing DynamicAccess Software Fast IP Allows you to enable and conﬁgure Fast IP3COM DMI Agent System Requirements Client PC RequirementsNetwork Management Requirements Installing the 3Com DMI Agent Page Online Technical Services Support from Your Network SupplierWorld Wide Web Site 3Com Bulletin Board Service Access by Analog Modem3Com FTP Site 3Com Facts Automated Fax Service Access by Digital Modem847 262 408 727Page Index NumbersDynamicAccess software NIC Online Help Online Knowledgebase Index Page 3Com Corporation Limited Warranty Obtaining Warranty Service FCC Class B Statement 3COM END User Software License Agreement Product Registration