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RTD Embedded Technologies, Inc. 

| 

www.rtd.com

 

 

15

 

LAN25255HR/LAN35255HR User’s Manual

 

4

 

Functional Description

 

 

Block Diagrams 

The Figure below shows the functional block diagram of the LAN25255HR.  The various parts of the block diagram are discussed in the 
following sections. 

 

Figure 7: LAN25255HR/LAN35255HR and IDAN-LAN25255HR/LAN35255HR Block Diagram 

 

BroadCom Gig-Ethernet Switch 

The main component of the LAN25255HR is the BroadCom BCM53115 Gigabit Ethernet switch.  This is an industrial temperature rated, 5 port 
Gigabit Ethernet switch.  This switch contains 5 full-duplex 10/100/1000 BASE-TX Ethernet transceivers for network interfacing.  One of these 
ports is used in conjunction with the WG82574IT for a host port.  This allows the LAN25255HR to work as its own mini-server in a stacked 
system.  In a stand-alone system the BroadCom switch acts as a basic Ethernet switch.  Any port can be used as an upstream port to supply a 
connection to the 3 other ports. 

 

Jumbo Frame Support 

The Broadcom Ethernet switch is capable of forwarding Ethernet frames up to 9720 bytes.  The maximum frame size supported by the Intel 
Ethernet controller is 9014 bytes.  To use Jumbo frames, it must be enabled in the Ethernet Controller driver settings (e.g. via the Device 
Manager in Windows).  Until this is enabled, the Intel controller will drop any Jumbo frames it receives.  Note that to use Jumbo frames 
effectively, all devices connected to the network must have Jumbo frames enabled, AND must agree on the frame size (mismatched frame 
sizes will result in dropped packets). 

 

Intel WG82574IT Gigabit Ethernet Controller 

The LAN25255HR has an onboard Gigabit Ethernet controller, the Intel WG82574IT.  The Intel WG82574IT is an industrial rated Gigabit 
Ethernet controller which features Auto-Crossover for MDI/MDI-X, 9014 byte Jumbo Frame support, 40KB packet buffer size and IPv4/6 
support. This controller connects to the host CPU through a x1 PCI Express link on the PCIe/104 connector and interfaces through the fifth port 
of the Ethernet switch to provide a host port for stacked systems.   

Содержание IDAN-LAN25255HR

Страница 1: ...RTD Embedded Technologies Inc AS9100 and ISO 9001 Certified LAN25255HR LAN35255HR IDAN LAN25255HR IDAN LAN35255HR Gigabit Ethernet Unmanaged Switch User s Manual BDM 610020088 Rev E ...

Страница 2: ...RTD Embedded Technologies Inc 103 Innovation Boulevard State College PA 16803 USA Telephone 814 234 8087 Fax 814 234 5218 www rtd com sales rtd com techsupport rtd com ...

Страница 3: ... Embedded Technologies Inc formerly Real Time Devices Inc PS 2 is a trademark of International Business Machines Inc PCI PCI Express and PCIe are trademarks of PCI SIG PC 104 PC 104 Plus PCI 104 PCIe 104 PCI 104 Express and 104 are trademarks of the PC 104 Embedded Consortium All other trademarks appearing in this document are the property of their respective owners Failure to follow the instructi...

Страница 4: ...wisted Pair Ethernet CN4 CN6 CN8 and CN10 12 3 3 4 Status LEDs 12 3 3 5 External Status LED Connectors CN14 and CN15 12 3 3 6 Bus Connectors 13 CN1 Top CN2 Bottom PCIe Connector 13 CN3 PCI Connector 13 Steps for Installing 14 4 Functional Description 15 Block Diagrams 15 BroadCom Gig Ethernet Switch 15 Jumbo Frame Support 15 Intel WG82574IT Gigabit Ethernet Controller 15 Onboard LEDs and External ...

Страница 5: ...HR Front View 18 Figure 5 IDAN LAN25255HR and IDAN LAN25255HR Rear View 19 Table of Tables Table 1 Ordering Options 6 Table 2 Operating Conditions 9 Table 3 Electrical Characteristics 9 Table 4 RJ45 Signal Assignments 11 Table 5 DIL Signal Assignments 12 Table 6 DIL Connector Pinout 12 Table 7 Status LEDs 12 Table 8 CN14 External LED Drive 13 Table 9 CN15 External LED Drive 13 Table 10 LAN25255HR ...

Страница 6: ... eliminate the need for crossover cables o Supports Jumbo frames up to 9720 bytes o Industrial Temperature rated 40 to 85 C PCI Express PCIe x1 Interface to CPU through PCIe 104 bus o Universal interface operates on Type 1 and Type 2 PCIe 104 buses PCI Express Bus o Provides 2 5 Gbps in each direction o Single lane and single Virtual Channel operation Compatible with multi Virtual Channel chipsets...

Страница 7: ...e IDAN building block can be used in just about any combination with other IDAN building blocks to create a simple but rugged 104 stack This module can also be incorporated in a custom built RTD HiDAN or HiDANplus High Reliability Intelligent Data Acquisition Node Contact RTD sales for more information on our high reliability systems ...

Страница 8: ... Monday through Friday 8 00am to 5 00pm EST E Mail sales rtd com 1 4 2 TECHNICAL SUPPORT If you are having problems with you system please try the steps in the Troubleshooting section of this manual For help with this product or any other product made by RTD you can contact RTD Embedded Technologies technical support via the following methods Phone 1 814 234 8087 Monday through Friday 8 00am to 5 ...

Страница 9: ...ng 0 90 MTBF Mean Time Before Failure 30C TBD Hours Electrical Characteristics Table 3 Electrical Characteristics Symbol Parameter Test Condition Min Typ Max Unit Power 5V Power Consumption 1 port connected MAC Phy 2 ports connected 3 ports connected 4 ports connected 5 ports connected 1 3 1 8 2 2 2 7 3 2 W IBUS5 5V Current between buses 8 0 A PCIe 104 Bus Differential Output Voltage 0 8 1 2 V DC ...

Страница 10: ...g until you are ready to install it into your system When removing it from the bag hold the board at the edges and do not touch the components or connectors Handle the board in an antistatic environment and use a grounded workbench for testing and handling of your hardware Physical Characteristics Weight Approximately 55 g 0 12 lbs Dimensions 90 17 mm L x 95 89 mm W 3 550 in L x 3 775 in W Figure ...

Страница 11: ...ctors CN5 CN7 CN9 and CN11 are for UTP Unshielded Twisted Pair wiring normally used for 10 100 1000 Base T Ethernet It is the default factory installed twisted pair connector on the board The following table gives the pin out of CN5 CN7 CN9 and CN11 Pin 1000 Function 10 100 Function 1 MDI_A Transmit 2 MDI_A Transmit 3 MDI_B Receive 4 MDI_C Not Used 5 MDI_C Not Used 6 MDI_B Receive 7 MDI_D Not Used...

Страница 12: ...d Ground 10 Shield Ground Table 5 DIL Signal Assignments Facing the connector pins the pin out is pictured in the following 9 7 5 3 1 Shield Ground MDI_D MDI_A MDI_C MDI_B Shield Ground MDI_D MDI_A MDI_C MDI_B 10 8 6 4 2 Table 6 DIL Connector Pinout 3 3 4 STATUS LEDS The tri color LEDs on the board are used to indicate the status of the Ethernet ports LED Color Description Off No Link Green Link a...

Страница 13: ... Low when linked at 1000 Mbps blink for activity 7 CN11 Link at 10 Mbps Low when linked at 10 Mbps blink for activity 9 CN11 Link at 100 Mbps Low when linked at 100 Mbps blink for activity 11 CN11 Link at 1000 Mbps Low when linked at 1000 Mbps blink for activity 2 4 6 8 10 12 3 3 volts or ground Depends on JP2 setting If JP2 1 2 is shorted these pins will be ground If JP2 2 3 is shorted these pins...

Страница 14: ...e properly positioned 6 Check the stacking order make sure all of the busses used by the peripheral cards are connected to the cpuModule 7 Hold the module by its edges and orient it so the bus connector pins line up with the matching connector on the stack 8 Gently and evenly press the module onto the PC 104 stack 9 If any boards are to be stacked above this module install them 10 Attach any neces...

Страница 15: ...ction to the 3 other ports Jumbo Frame Support The Broadcom Ethernet switch is capable of forwarding Ethernet frames up to 9720 bytes The maximum frame size supported by the Intel Ethernet controller is 9014 bytes To use Jumbo frames it must be enabled in the Ethernet Controller driver settings e g via the Device Manager in Windows Until this is enabled the Intel controller will drop any Jumbo fra...

Страница 16: ...ts on the board The setting for the onboard LEDs is to show link activity status and speed at 10 100 1000M To bring the LEDs out of an enclosed system there are two 0 1 inch DIL connectors CN14 CN15 that can be wired to external LED circuitry These signals are can source or sink 24 mA and the connector has jumper options for 3 3 volt or ground to facilitate external LED configuration ...

Страница 17: ...o install it into your system When removing it from the bag hold the module by the aluminum enclosure and do not touch the components or connectors Handle the module in an antistatic environment and use a grounded workbench for testing and handling of your hardware Physical Characteristics Weight Approximately 0 21 Kg 0 46 lbs Dimensions 151 972 mm L x 129 978 mm W x 16 993 mm H 5 983 in L x 5 117...

Страница 18: ... RTD s StackNet line of expandable managed and unmanaged switches 5 3 1 IDAN LAN25255HR AND IDAN LAN35255HR This utilityModule is an IDAN configuration with 9 pin D connectors The module comes with four 9 pin D to RJ45 adapters as shown below Figure 3 IDAN LAN25255HR and IDAN LAN35255HR Figure 4 IDAN LAN25255HR and IDAN LAN25255HR Front View 9 pin D male Module Part Adam Tech DE09PD Mating Part Ad...

Страница 19: ... wrist strap 2 Turn off power to the IDAN system 3 Remove the module from its anti static bag 4 Check that pins of the bus connector are properly positioned 5 Check the stacking order make sure all of the busses used by the peripheral cards are connected to the cpuModule 6 Hold the module by its edges and orient it so the bus connector pins line up with the matching connector on the stack 7 Gently...

Страница 20: ...RTD Embedded Technologies Inc www rtd com 20 LAN25255HR LAN35255HR User s Manual Figure 6 Example IDAN System ...

Страница 21: ...the least number of modules in the system possible Swap Components Try replacing parts in the system one at a time with similar parts to determine if a part is faulty or if a type of part is configured incorrectly If problems persist or you have questions about configuring this product contact RTD Embedded Technologies via the following methods Phone 1 814 234 8087 E Mail techsupport rtd com Be su...

Страница 22: ...C 104 Specifications A copy of the latest PC 104 specifications can be found on the webpage for the PC 104 Embedded Consortium www pc104 org PCI and PCI Express Specification A copy of the latest PCI and PCI Express specifications can be found on the webpage for the PCI Special Interest Group www pcisig com ...

Страница 23: ... God or other contingencies beyond the control of RTD Embedded Technologies or as a result of service or modification by anyone other than RTD Embedded Technologies Except as expressly set forth above no other warranties are expressed or implied including but not limited to any implied warranties of merchantability and fitness for a particular purpose and RTD Embedded Technologies expressly discla...

Страница 24: ...nologies Inc 103 Innovation Boulevard State College PA 16803 USA Telephone 814 234 8087 Fax 814 234 5218 www rtd com sales rtd com techsupport rtd com Copyright 2017 by RTD Embedded Technologies Inc All rights reserved ...

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