Ampro Corporation 486E Twisted Pair Interface J7, Twisted-Pair Installations, J7 Pin Function

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Little Board™/486e Technical Manual

Installing a Boot PROM

The Little Board/486e CPU can be configured for a boot PROM by installing the boot PROM in byte-wide socket S0.

Installing a Boot PROM in Byte-Wide Socket S0

Install a LAN boot PROM in byte-wide socket S0. The boot PROM code is run at boot time as a BIOS extension.

To install a LAN boot PROM in byte-wide socket S0, follow these guidelines:

1.Either obtain a preprogrammed boot PROM device, or program a PROM or FLASH EPROM with the boot PROM image. Use a 128K byte device, such as a 27C010, if possible.

2.Install the boot PROM device in S0.

3.In SETUP, set socket S0 for 64K bytes at D0000h and select S0 to be enabled at boot time.

Twisted Pair Interface (J7)

The twisted pair interface (10BaseT) appears on connector J7. It is a standard RJ45 telephone-type modular connector, which is the normal connector used with standard twisted-pair cables. Table 2– 33 lists the signals and pin numbers of J7.

Table 2–33. RJ45 Twisted Pair Connector (J7)

J7 Pin	Function

1	+ Transmit Data

2	- Transmit Data

3	+ Receive Data

4	N/C

5	N/C

6	- Receive Data

Twisted-Pair Installations

This section discusses the guidelines for twisted-pair installations.

!Connector jack—A standard RJ45-terminated cable can be plugged directly to the female RJ45 connector on the Little Board/486e CPU.

!Connector plug—The RJ45 connector plugs attach to both ends of twisted-pair Ethernet cable lengths. They are used to connect the Little Board/486e CPU to a hub or concentrator.

!Terminators—There are no external termination devices required. Termination is handled automatically by the hub devices.

Twisted-pair Ethernet cable is 22 or 24 gauge copper wire twisted together in pairs. Ethernet twisted-pair uses two pairs (four wires), one for transmitting and one to receive. It is available from

2–44

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Contents Little Board/486e Computer Revision Reason for Change Date Table of Contents Page Technical Specifications Index Introduction Technical SupportThis page left intentionally blank Viii Features ChapterGeneral Description CPU/MotherboardEnhanced Embedded-PC Bios VL-Bus Flat Panel/CRT Display ControllerSerial Ports Enhanced Parallel PortFloppy Interface IDE InterfaceEthernet LAN Interface Byte-Wide Socket and Solid State Disk SSDEnhanced Reliability Modular PC/104 Expansion BusHalt Testing Software Little Board Development Platform Interface Connector Summary OverviewConnector Function Size Key Pin ConnectorsConnector and Jumper Locations Jumper Configuration Options Jumper Group Function DefaultSystem I/O Map Address Function DC Power Connector Type Mating ConnectorPin Connection Power Requirements Backup BatteryCooling Requirements Powerfail Monitor Dram System Memory MapExpanded Memory and Extended Memory Memory Address FunctionSerial Ports J11, J13 RS-232C Serial PortsRS-485 Serial Port AddressesInterrupt Assignments IRQ11 IRQ7ROM-BIOS Installation of the Serial Ports Serial Port Connectors J11, J13Ports Pin Signal Function In/Out DB25 Name PinConfiguring Serial 2 for RS-485 J6, W5, W6 Pin Signal NameRS-485 Twisted-Pair Cabling Using RJ11 Connectors Pin RJ11 Signal Standard Wire ColorUsing the RS-485 Interface Interconnection Scheme ExamplesHex Command Serial ConsoleCOM Port Table Serial HandshakeSerial Booting and Serial Programming Using a Serial ModemBi-Directional Parallel Port Register Name Address Primary SecondarySelection Address Interrupts ROM-BIOS Installation of Parallel Ports Signal Type Number of Lines Function Output DriveStandard and General Purpose I/O Operation Parallel Port Interrupt Parallel Port Interrupt Enable Register Bit Signal Name In/Out Active J15Or Function High/Low Pin Parallel Port Connector J15 J15 Pin Signal Function In/Out DB25 NameSignal Name Full Name Description Register Bit DefinitionsFloppy Disk Interface Floppy Drive ConsiderationsCapacity Drive Size Tracks Data Rate Floppy Interface Configuration Floppy Interface Connector J14Pin Signal Name Function In/Out IDE Connector J12 IDE Hard Disk Interface25. IDE Drive Interface Connector J12 IDE Interface Configuration Master/Slave Setting Compact Flash Solid-State DiskEnabling the Drive Solid-State Disk PreparationConnecting a CRT J5 Name Connector Pins/Type DescriptionFlat Panel/CRT Video Controller J5 Pin Signal Name DB-15 DB-9 Part Description Mating ConnectorConnecting a Flat Panel J3 W10 +5VPin Signal Description Name FLMPower Sequencing Advanced Power ManagementBios Support of Non-Standard Panels Pgmebios VIDEO=filenameSelecting Vee Polarity LCD Bias Supply OptionJ4 Pin J3 Pin Description Attaching an External Contrast Control Ra = 270 Rb = Vee max Vee min / 1.5Example Ethernet Network Interface Network TermsInstalling an Ethernet Boot Prom QNXTwisted-Pair Installations Installing a Boot PromInstalling a Boot Prom in Byte-Wide Socket S0 Twisted Pair Interface J7Using Network Operating Systems NOS Network OS Drivers Controlling the Ethernet LAN Interface DirectlyProgram Name Vendor Function Driver Name Manufacturer’s Ethernet ID 00 40SSD Device Size Package Generic Type Pins Part Number Byte-Wide Socket S0ROM-BIOS Extensions Addressing the Byte-wide SocketWindow Address Accessing the Byte-Wide Socket Performance IssuesSolid State Disk SSD Drives Device 64KB Segment Address Size Segments Upper Nibble of BH Byte-Wide Socket Signals Typical Devices Pins Jumper DiagramW14 Pin Signal Name Description Jumpering the Byte-Wide SocketUsing EPROMs Flash Eprom Typical Devices Pins Jumper DiagramFlash Eprom Programming Using SRAMs Non-volatile RAMUtility Connector J16 Pin Signal Name Function ExsmiPush Button Reset Connection External Battery ConnectionsPC Speaker LED ConnectionBattery-Backed Clock Watchdog Timer Jumper W4WDT Response AL,61H AL,NOT 08H OUT 61H,AL Page AT Expansion Bus Using Standard PC and AT Bus Cards Onboard MiniModule ExpansionBus Expansion Guidelines Bus TerminationExpansion Bus Connector Pinouts Pin Signal Function In/Out Current PU/PD/S47. AT Expansion Bus Connector, B1-B32 P1 48. AT Expansion Bus Connector, C0-C19 P2 PU/PD/S Interrupt and DMA Channel Usage Interrupt FunctionChannel Function Serial Parallel FloppyEthernet Video Setup Overview Menu Name Functions Setup Page 1-Standard CMOS/EEPROM Setup Standard CMOS/EEPROM SetupDrive Parameter Setup Date and TimeFloppy Drives IDE Hard Disk DrivesPage Error Halt VideoDram Memory System PostSetup Page 2-Options/Peripheral Configuration Extended BiosSerial Port Parallel PortPort Address Selection Address InterruptFloppy Interface Enable IDE Interface EnableHot Key Setup Enable Selection AddressVideo State Blank Post TestByte-Wide Socket Configuration Serial Boot Loader EnableWatchdog Timer Configuration Local Bus Video DisplayInstalling a Modified Bios to Support a New Panel Flat Panel Display TypeSetup Page 3-Serial Console Configuration Extended Serial Console ConfigurationPage Creating Configuration Files with SETUP.COM Switch FunctionOperation with DOS DIR LPT1Utility Software Overview Little Board/486e CPU Specifications Embedded-PC System EnhancementsOnboard Peripherals CRT Support for Standard Video Modes Vesa Font Pixels Clock Horiz Vert Mem Mode MHz KHz Support Software Mechanical and Environmental Specifications Mechanical Dimensions Technical Specifications Page Index Page POST, Setup Little Board/486e Technical Manual Index-4