RTD Embedded Technologies, Inc.
|
www.rtd.com
6
LAN35H08HR & LAN35E08HR User’s Manual
1
Introduction
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
o
PCIe/104 PCI Express x1 link to onboard WG82574IT Gigabit Ethernet controller connects to one switch port
o
8 ports brought to 10-pin DIL I/O connectors
o
1 port for up stacking switch expansion with LAN35E08HR modules
o
Power connector for standalone applications
•
LAN35E08HR switch expansion
o
PCIe/104 stack through connector for power only
o
1 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.
o
8 ports brought to 10-pin DIL I/O connectors
o
1 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
o
LAN35H08HR has a power connector
o
IDAN has two 37-
pin “D” connectors
•
Two BroadCom BCM53115 Gigabit Ethernet Switches:
o
10 Full Duplex Unmanaged Gigabit Ethernet Ports
o
Any port can be the uplink, remaining links will be downlinks.
o
Ports have automatic MDI crossover to eliminate the need for crossover cables
o
Supports Jumbo frames up to 9720 bytes
o
Industrial 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:
o
Provides 2.5 Gbps in each direction
o
Single lane and single Virtual Channel operation
▪
Compatible with multi-Virtual Channel chipsets
o
Packetized serial traffic with PCI Express Split Completion protocol
o
Data Link Layer Cyclic Redundancy Check (CRC) generator and checker
o
Automatic Retry of bad packets
o
In-band interrupts and messages
o
Message Signaled Interrupt (MSI) support