rtd LAN35H08HR-D User manual

RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
LAN35H08HR-D & LAN35E08HR-D,
LAN35H08HR-RJ & LAN35E08HR-RJ,
IDAN-LAN35H08HR & IDAN-LAN35E08HR
Gigabit Ethernet Unmanaged Switches
User’s Manual
BDM-610020116 Rev. B
LAN35H08HR-D
LAN35H08HR-RJ

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 LAN35H08HR-D & LAN35E08HR-D User’s Manual
Revision History
Rev A Initial Release 10/20/2014
Rev B Modified LAN35E08HR version, added IDAN cable kit and MTBF. Corrected weight. 10/06/2015
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 LAN35H08HR-D & LAN35E08HR-D User’s Manual
Table of Contents
1Introduction 6
Product Overview........................................................................................................................................................................ 6
Board Features ........................................................................................................................................................................... 6
Ordering Information................................................................................................................................................................... 7
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................................................................................................................................................................................ 12
3.3.1 External I/O Connectors 13
3.3.2 10-pin DIL Twisted Pair Ethernet, Port 1 –Port 8 (LANx08HR-D only) 13
3.3.3 RJ45 Twisted Pair Ethernet, Port 1 –Port 8 (LANx08HR-RJ only) 14
3.3.1 12-pin SIL Power, CN6 (LAN35H08HR only) 14
3.3.2 Status LEDs 14
3.3.3 External Status LED Connectors CN7 and CN9 14
3.3.4 CN1 (Top) & CN2 (Bottom) Bus Connectors 15
Steps for Installing .................................................................................................................................................................... 15
4Functional Description 17
Block Diagrams......................................................................................................................................................................... 17
BroadCom Gig-Ethernet Switch................................................................................................................................................ 18
Jumbo Frame Support .............................................................................................................................................................. 18
Intel WG82574IT Gigabit Ethernet Controller........................................................................................................................... 19
Onboard LEDs and External LED Connectors ......................................................................................................................... 19
5IDAN Connections 20
Module Handling Precautions................................................................................................................................................... 20
Physical Characteristics............................................................................................................................................................ 20
IDAN Versions .......................................................................................................................................................................... 21
5.3.1 IDAN-LAN35H08HR & IDAN-LAN35E08HR 21
Steps for Installing .................................................................................................................................................................... 24
6Troubleshooting 25
7Additional Information 26
PC/104 Specifications............................................................................................................................................................... 26
PCI and PCI Express Specification .......................................................................................................................................... 26
8Limited Warranty 27

RTD Embedded Technologies, Inc. | www.rtd.com vLAN35H08HR-D & LAN35E08HR-D User’s Manual
Table of Figures
Figure 1: LAN35H08HR-D & LAN35E08HR-D Board Dimensions ........................................................................................................................ 10
Figure 2: LAN35H08HR-RJ & LAN35E08HR-RJ Board Dimensions..................................................................................................................... 11
Figure 3: LAN35H08HR-D & LAN35E08HR-D Board Connections ....................................................................................................................... 12
Figure 4: LAN35H08HR-RJ & LAN35E08HR-RJ Board Connections.................................................................................................................... 13
Figure 5: RJ-45 Jack Connector ............................................................................................................................................................................. 14
Figure 6: External LED Drive Circuit....................................................................................................................................................................... 15
Figure 7: Example 104™Stack............................................................................................................................................................................... 16
Figure 8: LAN35H08HR Block Diagram ................................................................................................................................................................. 17
Figure 9: IDAN-LAN35H08HR Block Diagram........................................................................................................................................................ 17
Figure 10: LAN35E08HR Block Diagram................................................................................................................................................................ 18
Figure 11: IDAN-LAN35E08HR Block Diagram...................................................................................................................................................... 18
Figure 12: IDAN Dimensions .................................................................................................................................................................................. 20
Figure 13: IDAN-LAN35H08HR or IDAN-LAN38E08HR Front View ...................................................................................................................... 22
Figure 14: IDAN-LAN35H08HR or IDAN-LAN38E08HR Rear View....................................................................................................................... 23
Figure 15: Example IDAN System .......................................................................................................................................................................... 24
Table of Tables
Table 1: Ordering Options ........................................................................................................................................................................................ 7
Table 2: Operating Conditions .................................................................................................................................................................................. 9
Table 3: Electrical Characteristics ............................................................................................................................................................................ 9
Table 4: Ethernet Signal Assignments.................................................................................................................................................................... 13
Table 5: RJ45 Signal Assignments......................................................................................................................................................................... 14
Table 6: Power Signal Assignments....................................................................................................................................................................... 14
Table 7: Status LEDs.............................................................................................................................................................................................. 14
Table 8: CN7 External LED Drive ........................................................................................................................................................................... 15
Table 9: CN8 External LED Drive ........................................................................................................................................................................... 15
Table 10: IDAN-LAN35H08HR and IDAN-LAN35E08HR Front Connector Pin Out .............................................................................................. 22
Table 11: IDAN-LAN35H08HR and IDAN-LAN35E08HR Rear Connector Pin Out............................................................................................... 23

RTD Embedded Technologies, Inc. | www.rtd.com 6LAN35H08HR & LAN35E08HR User’s Manual
1Introduction
Product Overview
The LAN35H08HR and LAN35E08HR are stackable 10-port unmanaged Gigabit Ethernet switches for expanding the networking capabilities of
any system. The boards can be used either in a PCIe/104 system or as a standalone stackable switch. In a stack the LAN35H08HR has a
host interface x1 PCI Express link for an onboard Gigabit Ethernet controller that is connected to one port of the switch. The LAN35E08HR
does not have an Ethernet controller and is designed to stack above an LAN35H08HR or another LAN35E08HR to provide additional switch
ports.
As standalone modules they each provide eight Ethernet ports any one of which can be the upstream port and the remaining will be
downstream ports. The LAN35H08HR has a power connector and the LAN35E08HR provides stackable expansion. This board is compatible
with all PCI Express cpuModules and has only the PCIe/104 connector. The boards are available in IDAN frames with two 37-pin “D”
connectors.
Board Features
•LAN35H08HR with host interface
oPCIe/104 PCI Express x1 link to onboard WG82574IT Gigabit Ethernet controller connects to one switch port
o8 ports brought to 10-pin DIL I/O connectors
o1 port for up stacking switch expansion with LAN35E08HR modules
oPower connector for standalone applications
•LAN35E08HR switch expansion
oPCIe/104 stack through connector for power only
o1 port for stack down expansion connector
▪Note: The stackdown connector is not PC/104 compliant, so exercise care if placing it above something other
than a LAN35H08HR or another LAN35E08HR. Standalone applications should use the LAN35H08HR.
o8 ports brought to 10-pin DIL I/O connectors
o1 port for up stacking switch expansion with LAN35E08HR modules
•I/O Connector Options
o–D has eight 10-pin 0.1” dual-inline connectors
o–RJ has eight RJ-45 connectors
oLAN35H08HR has a power connector
oIDAN has two 37-pin “D” connectors
•Two BroadCom BCM53115 Gigabit Ethernet Switches:
o10 Full Duplex Unmanaged Gigabit Ethernet Ports
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 with supplied passive heatsink
•PCIe/104 Universal 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

RTD Embedded Technologies, Inc. | www.rtd.com 7LAN35H08HR & LAN35E08HR User’s Manual
Ordering Information
The LAN35H08HR & LAN35E08HR are available with the following options:
Table 1: Ordering Options
Part Number
Description
LAN35H08HR-RJ
8-port Gigabit Ethernet Switch with host interface and PCIe/104 bus with RJ-
45 and power connectors
LAN35H08HR-D
8-port Gigabit Ethernet Switch with host interface and PCIe/104 bus with 10-
pin DIL and power connectors
IDAN-LAN35H08HRS
8-port Gigabit Ethernet Switch with host interface in IDAN enclosure with
two 37-pin “D” connectors and PCIe/104 bus
LAN35E08HR-RJ
8-port Gigabit Ethernet Switch expansion with PCIe/104 bus and RJ-45
connectors
LAN35E08HR-D
8-port Gigabit Ethernet Switch expansion with PCIe/104 bus and 10-pin DIL
connectors
IDAN-LAN35E08HRS
8-port Gigabit Ethernet Switch expansion in IDAN enclosure with two 37-pin
“D” connectors and PCIe/104 bus
IDAN-XKCM48
Cable kit for IDAN-LAN35H08HRS and IDAN-LAN35E08HRS to break the
37-pin “D” connectors to RJ-45.
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 8LAN35H08HR & LAN35E08HR 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 9LAN35H08HR & LAN35E08HR 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
Ta
Operating Temperature
With supplied passive heatsink
-40
+85
C
Ts
Storage Temperature
-55
+125
C
RH
Relative Humidity
Non-Condensing
0
90%
%
MTBF
Mean Time Before Failure
LAN35H08HR, 30°C
598,589
Hours
IDAN-LAN35H08HR, 30°C
594,464
LAN35E08HR, 30°C
649,041
IDAN-LAN35E08HR, 30°C
645,046
Electrical Characteristics
Table 3: Electrical Characteristics
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Power
+5V
LAN35H08HR
Power
Consumption
MAC/Phy linked at 1Gbps
MAC/Phy plus 1 port linked at 1Gbps
MAC/Phy plus 2 ports linked at 1Gbps
MAC/Phy plus 3 ports linked at 1Gbps
MAC/Phy plus 4 ports linked at 1Gbps
MAC/Phy plus 5 ports linked at 1Gbps
MAC/Phy plus 6 ports linked at 1Gbps
MAC/Phy plus 7 ports linked at 1Gbps
MAC/Phy plus 8 ports linked at 1Gbps
MAC/Phy , up stacking, plus 8 ports linked at 1Gbps
3.2
3.6
3.9
4.3
4.7
5.0
5.4
5.8
6.2
6.6
W
Power
+5V
LAN35E08HR
Power
Consumption
No ports linked at 1Gbps
Down stacking port linked at 1Gbps
Down stacking plus 1 ports linked at 1Gbps
Down stacking plus 2 ports linked at 1Gbps
Down stacking plus 3 ports linked at 1Gbps
Down stacking plus 4 ports linked at 1Gbps
Down stacking plus 5 ports linked at 1Gbps
Down stacking plus 6 ports linked at 1Gbps
Down stacking plus 7 ports linked at 1Gbps
Down stacking plus 8 ports linked at 1Gbps
Down and Up stacking plus 8 ports linked at 1Gbps
1.9
2.2
2.6
3.0
3.3
3.7
4.1
4.5
4.9
5.2
5.6
W
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 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
•LAN35x08HR-D Weight: Approximately 91 g (0.20 lbs.)
•LAN35x08HR-RJ Weight: Approximately 109 g (0.24 lbs.)
•Dimensions: 90.17 mm L x 95.89 mm W (3.550 in L x 3.775 in W)
Figure 1: LAN35H08HR-D & LAN35E08HR-D Board Dimensions
CN6 on LAN35H08HR only

RTD Embedded Technologies, Inc. | www.rtd.com 11 LAN35H08HR & LAN35E08HR User’s Manual
Figure 2: LAN35H08HR-RJ & LAN35E08HR-RJ Board Dimensions
CN6 on LAN35H08HR only

RTD Embedded Technologies, Inc. | www.rtd.com 12 LAN35H08HR & LAN35E08HR User’s Manual
Connectors
Figure 3: LAN35H08HR-D & LAN35E08HR-D Board Connections
CN5 Switch Expansion Up
Factory Use Only
CN8 (on bottom)
Switch Expansion Down
LAN35E08HR only
CN1 PCIe/104
CN2 PCIe/104 (bottom)
CN9
Link/Activity LEDs
Link Speed/ACT LED
Switch Port 4
Link Speed/ACT LED
Switch Port 3
Link Speed/ACT LED
Switch Port 2
Link Speed/ACT LED
Switch Port 1
CN7
Link/Activity LEDs
Switch Port 5
Link Speed/ACT LED
Switch Port 6
Link Speed/ACT LED
Switch Port 7
Link Speed/ACT LED
Switch Port 8
Link Speed/ACT LED
CN6: Power
LAN35H08HR only
Link Speed/ACT LED
•LAN35H08HR –Host Ethernet Link
•LAN35E08HR –Expansion Down Link
Link Speed/ACT LED
Expansion Up Link

RTD Embedded Technologies, Inc. | www.rtd.com 13 LAN35H08HR & LAN35E08HR User’s Manual
Figure 4: LAN35H08HR-RJ & LAN35E08HR-RJ Board Connections
3.3.1 EXTERNAL I/O CONNECTORS
•Port 1 –8: 10-pin DIL connectors for Ethernet
•CN7/9: External LED connectors
•CN5: Switch Expansion Up Link
•CN8: Switch Expansion Down Link (LAN35E08HR only)
•CN6: Power Input
3.3.2 10-PIN DIL TWISTED PAIR ETHERNET,PORT 1–PORT 8(LANX08HR-D ONLY)
Port 1 –Port 8 are the Ethernet I/O connectors. The pin out of all eight connector is the same and is listed 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 4: Ethernet Signal Assignments
CN5 Switch Expansion Up
Factory Use Only
CN8 (on bottom)
Switch Expansion Down
LAN35E08HR only
CN9
Link/Activity LEDs
CN7
Link/Activity LEDs
Switch Port 5
Link Speed/ACT LED
Switch Port 6
Link Speed/ACT LED
Switch Port 7
Link Speed/ACT LED
Switch Port 8
Link Speed/ACT LED
Link Speed/ACT LED
LAN35H08HR –Host Ethernet Link
LAN35E08HR –Expansion Down Link
Link Speed/ACT LED
Expansion Up Link
Link Speed/ACT LED
Switch Port 4
Link Speed/ACT LED
Switch Port 3
Link Speed/ACT LED
Switch Port 2
Link Speed/ACT LED
Switch Port 1
CN1 PCIe/104
CN2 PCIe/104 (bottom)
CN6: Power
LAN35H08HR only

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3.3.3 RJ45 TWISTED PAIR ETHERNET,PORT 1–PORT 8(LANX08HR-RJ ONLY)
Port 1 –Port 8 are UTP (Unshielded Twisted Pair) wiring normally used for 10/100/1000 Base-T Ethernet. The following table gives the pin
out of Port 1 –Port 8.
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 5: RJ45 Signal Assignments
Port 1 –Port 8 are standard female RJ-45 connectors. The figure below shows the pin numbering when looking into the connector:
Figure 5: RJ-45 Jack Connector
3.3.1 12-PIN SIL POWER,CN6 (LAN35H08HR ONLY)
CN6 is a power connector to allow use in a standalone system. The board only requires +5V and ground, however if +12V is supplied it will
power the PCIe/104 bus connectors. CN6 is only on the LAN35H08HR versions. The pin out is listed in the table below.
Pin
Function
1
Ground
2
+5V
3
+5V
4
Ground
5
Ground
6
+12V
7
+12V
8
Ground
9
Ground
10
+5V
11
+5V
12
Ground
Table 6: Power Signal Assignments
3.3.2 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, flash with activity
Blue
Link at 100 Mbps, flash with activity
Red
Link at 10 Mbps, flash with activity
Table 7: Status LEDs
3.3.3 EXTERNAL STATUS LED CONNECTORS CN7AND CN9
CN7 and CN9 are the status LED signals that are buffered and able to sink 24 mA. Each signal is driven low when active and tri-stated when
inactive, has a 374 Ohm current limiting resistor, and supports being pulled up to +5 volts. The drive circuit is shown below:

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Figure 6: External LED Drive Circuit
The pin out is in the tables below.
CN7 Pin
Function
Description
1
Port 1 Link/activity
Low when linked, goes tri-state with activity
3
Port 2 Link/activity
Low when linked, goes tri-state with activity
5
Port 3 Link/activity
Low when linked, goes tri-state with activity
7
Port 4 Link/activity
Low when linked, goes tri-state with activity
9
LAN35H08HR –Host Ethernet Link
LAN35E08HR –Expansion Down Link
Low when linked, goes tri-state with activity
2, 4, 6, 8, 10
+5V volts
Power for LEDs
Table 8: CN7 External LED Drive
CN9 Pin
Function
Description
1
Port 5 Link/activity
Low when linked, goes tri-state with activity
3
Port 6 Link/activity
Low when linked, goes tri-state with activity
5
Port 7 Link/activity
Low when linked, goes tri-state with activity
7
Port 8 Link/activity
Low when linked, goes tri-state with activity
9
Expansion Port Up Link/activity
Low when linked, goes tri-state with activity
2, 4, 6, 8, 10
+5V volts
Power for LEDs
Table 9: CN8 External LED Drive
3.3.4 CN1 (TOP)&CN2 (BOTTOM)BUS CONNECTORS
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 26)
The LAN35H08HR is an “Universal” board and can connect to either a Type 1 or Type 2 PCIe/104 connector.
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.

RTD Embedded Technologies, Inc. | www.rtd.com 16 LAN35H08HR & LAN35E08HR User’s Manual
Figure 7: Example 104™Stack

RTD Embedded Technologies, Inc. | www.rtd.com 17 LAN35H08HR & LAN35E08HR User’s Manual
4Functional Description
Block Diagrams
The Figures below shows the functional block diagram of the LAN35H08HR and IDAN-LAN35H08HR. The various parts of the block diagram
are discussed in the following sections.
Figure 8: LAN35H08HR Block Diagram
Figure 9: IDAN-LAN35H08HR Block Diagram
The Figures below shows the functional block diagram of the LAN35E08HR and IDAN-LAN35E08HR. The various parts of the block diagram
are discussed in the following sections.

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Figure 10: LAN35E08HR Block Diagram
Figure 11: IDAN-LAN35E08HR Block Diagram
BroadCom Gig-Ethernet Switch
The main components of the LAN35H08HR are the two BroadCom BCM53115 Gigabit Ethernet switch. They are industrial temperature rated,
5 port Gigabit Ethernet switches that are connected together to make a 10 port switch. This switch contains 10 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
LAN35H08HR 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 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).

RTD Embedded Technologies, Inc. | www.rtd.com 19 LAN35H08HR & LAN35E08HR User’s Manual
Intel WG82574IT Gigabit Ethernet Controller
The LAN35H08HR 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 bytes 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 Connectors
The LAN35H08HR has onboard tri-color LEDs for each of the ten Ethernet ports on the board. The setting for the onboard LEDs is to show
link, activity, and speed at 10/100/1000M. There are two 0.1 inch DIL connectors (CN7 & CN8) that can be wired to external LED circuitry.
They carry a link/activity signal for each port.

RTD Embedded Technologies, Inc. | www.rtd.com 20 LAN35H08HR & LAN35E08HR 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 12: IDAN Dimensions