rtd LAN25255HR User manual

RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
LAN25255HR/LAN35255HR
4+1 Gigabit Ethernet Unmanaged Switch
User’s Manual
BDM-610020088 Rev. A

RTD Embedded Technologies, Inc.
103 Innovation Boulevard
State College, PA 16803 USA
Telephone: [phone]
Fax: [phone]
www.rtd.com
[email protected]
[email protected]

RTD Embedded Technologies, Inc. | www.rtd.com iii LAN25255HR User’s Manual
Revision History
Rev A Initial Release
Advanced Analog I/O, Advanced Digital I/O, aAIO, aDIO, a2DIO, Autonomous SmartCal, “Catch the Express”, cpuModule, dspFramework, dspModule, expressMate, ExpressPlatform, HiDANplus, “MIL Value for
COTS prices”, multiPort, PlatformBus, and PC/104EZ are trademarks, and “Accessing the Analog World”, dataModule, IDAN, HiDAN, RTD, and the RTD logo are registered trademarks of RTD 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 instructions found in this manual may result in damage to the product described in this manual, or other components of the system. The procedure set forth in this manual shall only be performed
by persons qualified to service electronic equipment. Contents and specifications within this manual are given without warranty, and are subject to change without notice. RTD Embedded Technologies, Inc. shall not
be liable for errors or omissions in this manual, or for any loss, damage, or injury in connection with the use of this manual.
Copyright © 2011 by RTD Embedded Technologies, Inc. All rights reserved.

RTD Embedded Technologies, Inc. | www.rtd.com iv LAN25255HR User’s Manual
Table of Contents
1Introduction 6
Product Overview........................................................................................................................................................................ 61.1
Board Features ........................................................................................................................................................................... 61.2
Ordering Information................................................................................................................................................................... 61.3
Contact Information .................................................................................................................................................................... 71.4
1.4.1 Sales Support 7
1.4.2 Technical Support 7
2Specifications 8
Operating Conditions .................................................................................................................................................................. 82.1
Electrical Characteristics ............................................................................................................................................................ 82.2
3Board Connection 9
Board Handling Precautions ....................................................................................................................................................... 93.1
Physical Characteristics.............................................................................................................................................................. 93.2
Connectors and Jumpers.......................................................................................................................................................... 103.3
3.3.1 External I/O Connectors and Jumpers 10
3.3.2 RJ45 Twisted Pair Ethernet, CN5, CN7, CN9, CN11 10
3.3.3 Twisted Pair Ethernet CN1, CN6, CN8, and CN10 11
3.3.4 Status LEDs 11
3.3.5 External Status LED Connectors CN14 and CN15 11
3.3.6 Bus Connectors 12
CN1(Top) & CN2(Bottom): PCIe Connector 12
CN3: PCI Connector 12
Steps for Installing .................................................................................................................................................................... 133.4
4Functional Description 14
Block Diagram........................................................................................................................................................................... 144.1
BroadCom Gig-Ethernet Switch................................................................................................................................................ 144.2
Intel WG82574IT Gigabit Ethernet Controller........................................................................................................................... 144.3
Onboard LEDs and External LED Connectors ......................................................................................................................... 144.4
5IDAN Connections 15
Module Handling Precautions................................................................................................................................................... 155.1
Physical Characteristics............................................................................................................................................................ 155.2
IDAN-LAN25255HR and IDAN-LAN35255HR.......................................................................................................................... 165.3
IDAN Twisted Pair Ethernet PORT1, PORT2, PORT3, and PORT4........................................................................................ 175.4
Steps for Installing .................................................................................................................................................................... 175.5
6Troubleshooting 18
7Additional Information 19
PC/104 Specifications............................................................................................................................................................... 197.1
PCI and PCI Express Specification .......................................................................................................................................... 197.2
8Limited Warranty 20

RTD Embedded Technologies, Inc. | www.rtd.com vLAN25255HR User’s Manual
Table of Figures
Figure 1: LAN25255.................................................................................................................................................................................................. 6
Figure 2: RJ-45 Jack Connector ............................................................................................................................................................................. 11
Figure 3: IDAN-LAN25255HR and IDAN-LAN35255HR ........................................................................................................................................ 16
Figure 4: IDAN-LAN25255HR and IDAN-LAN25255HR Front View ...................................................................................................................... 16
Figure 5: IDAN-LAN25255HR and IDAN-LAN25255HR Rear View....................................................................................................................... 16
Table of Tables
Table 1: Ordering Options ........................................................................................................................................................................................ 6
Table 2: Operating Conditions .................................................................................................................................................................................. 8
Table 3: Electrical Characteristics ............................................................................................................................................................................ 8
Table 4: RJ45 Signal Assignments......................................................................................................................................................................... 10
Table 5: DIL Signal Assignments............................................................................................................................................................................ 11
Table 6: Status LEDs.............................................................................................................................................................................................. 11
Table 7: CN14 External LED Drive ......................................................................................................................................................................... 11
Table 8: CN15 External LED Drive ......................................................................................................................................................................... 12
Table 9: LAN25255HR and LAN35255HR IDAN Pin Out....................................................................................................................................... 17

RTD Embedded Technologies, Inc. | www.rtd.com 6LAN25255HR/LAN35255HR User’s Manual
1Introduction
Product Overview1.1
The LAN25255HR/LAN35255HR is designed to provide four Gigabit Ethernet ports for expanding the networking capabilities of any system.
The board can be used either in a PCI/104-Express system or as a standalone module. In a stack it uses an x1 PCI Express link for an
onboard Gigabit Ethernet controller. As a standalone module it provides four RJ45 ports one as an upstream port and 3 downstream ports.
This board is compatible with all PCI Express cpuModules. The LAN25255HR has both a PCIe/104 and PCI-104 connectors. The
LAN35255HR has only the PCIe/104 connector.
Board Features1.2
BroadCom BCM53115 Gigabit Ethernet Switch:
o5 Full Duplex Unmanaged Gigabit Ethernet Ports
1 port connects to the onboard WG82574IT Gigabit Ethernet controller
4 Ports Ethernet switch, any port can be the uplink
oIndustrial Temperature rated: -40 to +85 C
PCI Express (PCIe) x1 Interface to CPU through PCIe/104 bus
oUniversal interface operates on Type 1 and Type 2 PCIe/104 buses
PCI Express Bus:
oProvides 2.5 Gbps in each direction
oSingle lane and single Virtual Channel operation
Compatible with multi-Virtual Channel chipsets
oPacketized serial traffic with PCI Express Split Completion protocol
oData Link Layer Cyclic Redundancy Check (CRC) generator and checker
oAutomatic Retry of bad packets
oIn-band interrupts and messages
oMessage Signaled Interrupt (MSI) support
PCI Bus is used as a pass through interface on LAN25255HR, not present on the LAN35255HR
Ordering Information1.3
The LAN25255HR/LAN35255HR is available with the following options:
Table 1: Ordering Options
Part Number
Description
LAN25255HR
4 port Gigabit Ethernet Switch PCI/104-Express
IDAN-LAN25255HR
IDAN 4 port Gigabit Ethernet Switch in IDAN enclosure PCI/104-Express
LAN35255HR
4 port Gigabit Ethernet Switch PCIe/104
IDAN-LAN23255HR
IDAN 4 port Gigabit Ethernet Switch in IDAN enclosure PCIe/104
Figure 1: LAN25255
The Intelligent Data Acquisition Node (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.

RTD Embedded Technologies, Inc. | www.rtd.com 7LAN25255HR/LAN35255HR User’s Manual
Contact Information1.4
1.4.1 SALES SUPPORT
For sales inquiries, you can contact RTD Embedded Technologies sales via the following methods:
Phone: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: [email protected]
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: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: [email protected]

RTD Embedded Technologies, Inc. | www.rtd.com 8LAN25255HR/LAN35255HR User’s Manual
2Specifications
Operating Conditions2.1
Table 2: Operating Conditions
Symbol
Parameter
Test Condition
Min
Max
Unit
Vcc5
5V Supply Voltage
4.75
5.25
V
Vcc3
3.3V Supply Voltage
n/a
n/a
V
Ta
Operating Temperature
-40
+85
C
Ts
Storage Temperature
-55
+125
C
RH
Relative Humidity
Non-Condensing
0
90%
%
MTBF
Mean Time Before Failure
30C
TBD
Hours
Electrical Characteristics2.2
Table 3: Electrical Characteristics
Symbol
Parameter
Test Condition
Min
Max
Unit
P
Power Consumption
Vcc5 = 5.0V
TBD
W
Icc5
5V Input Supply Current
Active
TBD
mA
IBUS5
5V Current between buses
8.0
A
PCIe/104 Bus
Differential Output Voltage
0.8
1.2
V
DC Differential TX Impedance
95.2
116.9
Ω
Differential Input Voltage
0.175
3.3
V
DC Differential RX Impedance
92.7
115.8
Ω
Electrical Idle Detect Threshold
61
173
mV

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3Board Connection
Board Handling Precautions3.1
To prevent damage due to Electrostatic Discharge (ESD), keep your board in its antistatic bag 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 Characteristics3.2
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 2: Board Dimensions

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Connectors and Jumpers3.3
Figure 3: LAN25255HR/LAN35255HR Board Connections
3.3.1 EXTERNAL I/O CONNECTORS AND JUMPERS
CN5/7/9/11: RJ-45 connectors for Ethernet access
CN4/6/8/10: 2x5 0.1” DIL connector not populated in standard product. Used for bringing out the Ethernet ports in an IDAN system.
CN14/15: External LED connectors
JP1 and JP2: Power for external LED connectors CN14 and CN15
CN12 and JP3: Factory use only
3.3.2 RJ45 TWISTED PAIR ETHERNET,CN5, CN7, CN9, CN11
Connectors 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
8
MDI_D-
Not Used
Table 4: RJ45 Signal Assignments
Link/ACT LED
CN5 Switch Port
Link/ACT LED
CN11 Switch Port
Link/ACT LED
CN9 Switch Port
JP1 LED Power
CN14 External LEDs
for CN5 & CN7 Ports
Link/ACT LED
Onboard Ethernet
JP2 LED Power
CN15 External LEDs
for CN9 & CN11 Ports
CN1 & CN2: PCIe/104 Connector
CN3: PCI-104 Connector
Link/ACT LED
CN7 Switch Port

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CN5, CN7, CN9, and CN11 are standard female RJ-45 connectors. The figure below shows the pin numbering when looking into the
connector:
Figure 2: RJ-45 Jack Connector
3.3.3 TWISTED PAIR ETHERNET CN1, CN6, CN8, AND CN10
CN1, CN6, CN8, and CN10 are optional connectors which can be factory installed in place of the RJ45 connector. This connector is not
installed when the RJ45 connector is installed. The pin out of CN1, CN6, CN8, and CN10 is in the table below.
Pin
1000 Function
10/100 Function
RJ-45 Pin
1
MDI_B+
Receive +
3
2
MDI_B-
Receive -
6
3
MDI_C+
Not Used
4
4
MDI_C-
Not Used
5
5
MDI_A+
Transmit +
1
6
MDI_A-
Transmit -
2
7
MDI_D+
Not Used
7
8
MDI_D-
Not Used
8
9
Shield Ground
10
Shield Ground
Table 5: DIL Signal Assignments
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 at 1000 Mbps
Blue
Link at 100 Mbps
Red
Link at 10 Mbps
Blink
Activity
Table 6: Status LEDs
3.3.5 EXTERNAL STATUS LED CONNECTORS CN14 AND CN15
CN14 and CN15 are the status LED signals that are buffered and able to source or sink 24 mA. Additionally, JP1 and JP2 can select either 3.3
volts or ground to use with these signals. The pin out is in the tables below.
CN14 Pin
Function
10/100 Function
1
CN5 Link at 10 Mbps
Low when linked at 10 Mbps, blink for activity
3
CN5 Link at 100 Mbps
Low when linked at 100 Mbps, blink for activity
5
CN5 Link at 1000 Mbps
Low when linked at 1000 Mbps, blink for activity
7
CN7 Link at 10 Mbps
Low when linked at 10 Mbps, blink for activity
9
CN7 Link at 100 Mbps
Low when linked at 100 Mbps, blink for activity
11
CN7 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 JP1 1-2 is shorted these pins will be ground
If JP1 2-3 is shorted these pins will be 3.3 volts
Table 7: CN14 External LED Drive

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CN15 Pin
Function
10/100 Function
1
CN9 Link at 10 Mbps
Low when linked at 10 Mbps, blink for activity
3
CN9 Link at 100 Mbps
Low when linked at 100 Mbps, blink for activity
5
CN9 Link at 1000 Mbps
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 will be 3.3 volts
Table 8: CN15 External LED Drive
3.3.6 BUS CONNECTORS
CN1(Top) & CN2(Bottom): PCIe Connector
The PCIe connector is the connection to the system CPU. The position and pin assignments are compliant with the PCI/104-Express
Specification. (See PC/104 Specifications on page 19)
The LAN25255HR and LAN35255HR are “Universal” boards, and can connect to either a Type 1 or Type 2 PCIe/104 connector.
CN3: PCI Connector
The PCI connector is the connection to PCI peripheral modules. This connector is used only as a pass through connector on this board.

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Steps for Installing3.4
1. Always work at an ESD protected workstation, and wear a grounded wrist-strap.
2. Turn off power to the PC/104 system or stack.
3. Select and install stand-offs to properly position the module on the stack.
4. Remove the module from its anti-static bag.
5. Check that pins of the bus connector are 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 necessary cables to the PC/104 stack.
11. Re-connect the power cord and apply power to the stack.
12. Boot the system and verify that all of the hardware is working properly.
Figure 4: Example 104™Stack

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4Functional Description
Block Diagram4.1
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 Block Diagram
BroadCom Gig-Ethernet Switch4.2
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.
Intel WG82574IT Gigabit Ethernet Controller4.3
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, 9KB 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.
Onboard LEDs and External LED Connectors4.4
The LAN25255 has onboard LEDs for each of the five Ethernet ports 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.

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5IDAN Connections
Module Handling Precautions5.1
To prevent damage due to Electrostatic Discharge (ESD), keep your module in its antistatic bag until you are ready to 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 Characteristics5.2
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 in W x 0.669 in H)
Figure 5: IDAN Dimensions

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IDAN-LAN25255HR and IDAN-LAN35255HR5.3
This utilityModule is also available in an IDAN configuration. The IDAN module is shown below.
Figure 3: IDAN-LAN25255HR and IDAN-LAN35255HR
Figure 4: IDAN-LAN25255HR and IDAN-LAN25255HR Front View
Figure 5: IDAN-LAN25255HR and IDAN-LAN25255HR Rear View
9 pin “D”: male
Module Part#: Adam Tech DE09PD
Mating Part#: Adam Tech DE09SD
9 pin “D”: male
Module Part#: Adam Tech DE09PD
Mating Part#: Adam Tech DE09SD

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IDAN Twisted Pair Ethernet PORT1, PORT2, PORT3, and PORT45.4
As an IDAN, the Ethernet signals are available on a male, DB-9 connector. A DB-9 to RJ-45 adapter is also included for each port.
DB-9 Pin
1000 Function
10/100 Function
RJ-45 Pin
1
MDI_B+
Receive +
3
2
MDI_C+
Not Used
4
3
MDI_A+
Transmit +
1
4
MDI_D+
Not Used
7
5
Shield Ground
N/C
6
MDI_B-
Receive -
6
7
MDI_C-
Not Used
5
8
MDI_A-
Transmit -
2
9
MDI_D-
Not Used
8
Table 9: LAN25255HR and LAN35255HR IDAN Pin Out
Steps for Installing
5.5
1. Always work at an ESD protected workstation, and wear a grounded 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 and evenly press the module onto the IDAN system.
8. If any boards are to be stacked above this module, install them.
9. Finish assembling the IDAN stack by installing screws of an appropriate length.
10. Attach any necessary cables to the IDAN system.
11. Re-connect the power cord and apply power to the stack.
12. Boot the system and verify that all of the hardware is working properly.
Figure 6: Example IDAN System

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6Troubleshooting
If you are having problems with your system, please try the following initial steps:
Simplify the System –Remove modules one at a time from your system to see if there is a specific module that is causing a
problem. Perform you troubleshooting with 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: [phone]
E-Mail: [email protected]
Be sure to check the RTD web site (http://www.rtd.com) frequently for product updates, including newer versions of the board manual and
application software.

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7Additional Information
PC/104 Specifications7.1
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 Specification7.2
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

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8Limited Warranty
RTD Embedded Technologies, Inc. warrants the hardware and software products it manufactures and produces to be free from defects in
materials and workmanship for one year following the date of shipment from RTD Embedded Technologies, Inc. This warranty is limited to the
original purchaser of product and is not transferable.
During the one year warranty period, RTD Embedded Technologies will repair or replace, at its option, any defective products or parts at no
additional charge, provided that the product is returned, shipping prepaid, to RTD Embedded Technologies. All replaced parts and products
become the property of RTD Embedded Technologies. Before returning any product for repair, customers are required to contact the factory for
a Return Material Authorization (RMA) number.
This limited warranty does not extend to any products which have been damaged as a result of accident, misuse, abuse (such as: use of
incorrect input voltages, improper or insufficient ventilation, failure to follow the operating instructions that are provided by RTD Embedded
Technologies, “acts of 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 disclaims all warranties not stated herein. All implied warranties, including implied warranties for merchantability and
fitness for a particular purpose, are limited to the duration of this warranty. In the event the product is not free from defects as warranted above,
the purchaser's sole remedy shall be repair or replacement as provided above. Under no circumstances will RTD Embedded Technologies be
liable to the purchaser or any user for any damages, including any incidental or consequential damages, expenses, lost profits, lost savings, or
other damages arising out of the use or inability to use the product.
Some states do not allow the exclusion or limitation of incidental or consequential damages for consumer products, and some states do not
allow limitations on how long an implied warranty lasts, so the above limitations or exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.