User`s manual

RTD Embedded Technologies, Inc. | www.rtd.com 6 LAN25255HR/LAN35255HR User’s Manual
1 Introduction
Product Overview 1.1
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. The boards are available in IDAN frames with either 9-pin “D” connectors or RJ45 connectors.
Board Features 1.2
 BroadCom BCM53115 Gigabit Ethernet Switch:
o 5 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
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
 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
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
 PCI Bus is used as a pass through interface on LAN25255HR, not present on the LAN35255HR
Ordering Information 1.3
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
4 port Gigabit Ethernet Switch PCI/104-Express in IDAN enclosure with 9-
pin “D” connectors
IDAN-LAN25256HR
4 port Gigabit Ethernet Switch PCI/104-Express in IDAN enclosure with
RJ45 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
IDAN-LAN35256HR
4 port Gigabit Ethernet Switch PCIe/104 in IDAN enclosure with RJ45
connectors
IDAN-LAN35256HR-SFP
5 port Gigabit Ethernet Switch PCIe/104 in IDAN enclosure with RJ45
connectors and SFP socket