rtd IDAN-LAN25255HR User manual

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

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 10/30/2012
Rev B Added IDAN-LAN25256HR and IDAN-LAN35256HR versions 12/9/2013
Rev C Updated power specifications and added jumbo frames 8/20/2014
Rev D Added a DIL pin assignment figure, updated figure numbers 3/5/2015
Rev E Replaced IDAN-LAN35256HR versions with IDAN-LAN35x04HR, changed DIL pin location drawing 11/10/2017
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 © 2017 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........................................................................................................................................................................ 6
Board Features ........................................................................................................................................................................... 6
Ordering Information................................................................................................................................................................... 6
Contact Information .................................................................................................................................................................... 8
1.4.1 Sales Support 8
1.4.2 Technical Support 8
2Specifications 9
Operating Conditions .................................................................................................................................................................. 9
Electrical Characteristics ............................................................................................................................................................ 9
3Board Connection 10
Board Handling Precautions ..................................................................................................................................................... 10
Physical Characteristics............................................................................................................................................................ 10
Connectors and Jumpers.......................................................................................................................................................... 11
3.3.1 External I/O Connectors and Jumpers 11
3.3.2 RJ45 Twisted Pair Ethernet, CN5, CN7, CN9, CN11 11
3.3.3 Twisted 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
4Functional Description 15
Block Diagrams......................................................................................................................................................................... 15
BroadCom Gig-Ethernet Switch................................................................................................................................................ 15
Jumbo Frame Support .............................................................................................................................................................. 15
Intel WG82574IT Gigabit Ethernet Controller........................................................................................................................... 15
Onboard LEDs and External LED Connectors ......................................................................................................................... 16
5IDAN Connections 17
Module Handling Precautions................................................................................................................................................... 17
Physical Characteristics............................................................................................................................................................ 17
IDAN Versions .......................................................................................................................................................................... 18
5.3.1 IDAN-LAN25255HR and IDAN-LAN35255HR 18
Steps for Installing .................................................................................................................................................................... 19
6Troubleshooting 21
7Additional Information 22
PC/104 Specifications............................................................................................................................................................... 22
PCI and PCI Express Specification .......................................................................................................................................... 22
8Limited Warranty 23

RTD Embedded Technologies, Inc. | www.rtd.com vLAN25255HR User’s Manual
Table of Figures
Figure 1: LAN25255.................................................................................................................................................................................................. 7
Figure 2: RJ-45 Jack Connector ............................................................................................................................................................................. 12
Figure 3: IDAN-LAN25255HR and IDAN-LAN35255HR ........................................................................................................................................ 18
Figure 4: IDAN-LAN25255HR and IDAN-LAN25255HR 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 and LAN35255HR IDAN Pin Out..................................................................................................................................... 19

RTD Embedded Technologies, Inc. | www.rtd.com 6LAN25255HR/LAN35255HR User’s Manual
1Introduction
Product Overview
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. The boards are available in IDAN frames with either 9-pin “D” connectors or RJ45 connectors.
Board Features
•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
oAny port can be the uplink, remaining links will be downlinks.
oPorts have automatic MDI crossover to eliminate the need for crossover cables
oSupports Jumbo frames up to 9720 bytes
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 Information
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
4 port Gigabit Ethernet Switch PCI/104-Express in IDAN enclosure with 9-
pin “D” connectors
LAN35255HR
4 port Gigabit Ethernet Switch PCIe/104
IDAN-LAN35255HR
4 port Gigabit Ethernet Switch PCIe/104 in IDAN enclosure with 9-pin “D”
connectors
For IDAN versions with RJ-45 connectors see RTD’s StackNet line of expandable managed and unmanaged switches.

RTD Embedded Technologies, Inc. | www.rtd.com 7LAN25255HR/LAN35255HR User’s Manual
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 8LAN25255HR/LAN35255HR User’s Manual
Contact Information
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 9LAN25255HR/LAN35255HR User’s Manual
2Specifications
Operating Conditions
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 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 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

RTD Embedded Technologies, Inc. | www.rtd.com 10 LAN25255HR/LAN35255HR User’s Manual
3Board Connection
Board Handling Precautions
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 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 2: Board Dimensions

RTD Embedded Technologies, Inc. | www.rtd.com 11 LAN25255HR/LAN35255HR User’s Manual
Connectors and Jumpers
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

RTD Embedded Technologies, Inc. | www.rtd.com 12 LAN25255HR/LAN35255HR User’s Manual
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 CN4, CN6, CN8, AND CN10
CN4, 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 CN4, 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
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 at 1000 Mbps
Blue
Link at 100 Mbps
Red
Link at 10 Mbps
Blink
Activity
Table 7: 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

RTD Embedded Technologies, Inc. | www.rtd.com 13 LAN25255HR/LAN35255HR User’s Manual
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 8: CN14 External LED Drive
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 9: 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 22)
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.

RTD Embedded Technologies, Inc. | www.rtd.com 14 LAN25255HR/LAN35255HR User’s Manual
Steps for Installing
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

RTD Embedded Technologies, Inc. | www.rtd.com 15 LAN25255HR/LAN35255HR User’s Manual
4Functional 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.

RTD Embedded Technologies, Inc. | www.rtd.com 16 LAN25255HR/LAN35255HR User’s Manual
Onboard LEDs and External LED Connectors
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.

RTD Embedded Technologies, Inc. | www.rtd.com 17 LAN25255HR/LAN35255HR User’s Manual
5IDAN Connections
Module Handling Precautions
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 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 in W x 0.669 in H)
Figure 5: IDAN Dimensions

RTD Embedded Technologies, Inc. | www.rtd.com 18 LAN25255HR/LAN35255HR User’s Manual
IDAN Versions
The IDAN-LAN25255HR and IDAN-LAN35255HR feature rugged 9-pin “D” connectors. For IDAN versions with RJ-45 connectors see 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#: Adam Tech DE09SD

RTD Embedded Technologies, Inc. | www.rtd.com 19 LAN25255HR/LAN35255HR User’s Manual
Figure 5: IDAN-LAN25255HR and IDAN-LAN25255HR Rear View
The Ethernet signals on the IDAN-LAN25255HR and IDAN-LAN35255HR 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 10: LAN25255HR and LAN35255HR IDAN Pin Out
Steps for Installing
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.
9 pin “D”: male
Module Part#: Adam Tech DE09PD
Mating Part#: Adam Tech DE09SD

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