Single Board Computer COM-1452
The COM-1452 is a PC/104+ Version 2.0 compliant communications module that features five fast Ethernet ports and allows the host CPU module to perform bridging operations with the possibility to manage up to five different LANs using the Ethernet protocol. There is also a hardware bypass between Ethernet ports 1 and 2 that can be activated via software, automatically activated when the COM-1452 is powered off, or activated when a watchdog signal is received from the host Eurotech CPU module. This makes it possible to realize a crossover connection between two LANs.
Each Ethernet port is managed by an Intel® 82551 controller that can provide fast data transfers by offloading TCP, UDP and IP checksums from the main processor. The off-load TCP segmentation is also supported for operations such as Large Send.
The COM-1452 has a Texas Instruments PCI2060 PCI-to-PCI Bridge; this allows transactions to occur between a master on one PCI bus and a target on another by creating hierarchical PCI buses. The bridge makes it possible for the primary and secondary bus clocks to be completely asynchronous.
The small footprint design of the COM-1452 makes it easy to embed within new or existing system designs and is an ideal choice when space-constrained environments are decisive factors. The module has been designed to resist harsh environmental conditions; it is resistant to high humidity, vibrations and mechanical shocks. The module can be qualified to operate in the standard (0 to +60°C) or extended (-40 to +85°C) temperature ranges.
Features
Architecture
PC/104-Plus Version 2.0 compliant
Fast Ethernet Controllers
Five Intel® 82551 Fast Ethernet controllers
PCI-to-PCI Bridge
Texas Instruments PCI2060 PCI-to-PCI Bridge
Hardware Bypass
Hardware bypass between Ethernet ports 1 & 2 (relays normally open)
Watchdog
Programmable management of an external
WDT signal
PCI Environment
5V tolerant
Supported Operating Systems
WinCE, WinXPe and Linux
RoHS
Fully RoHS (2002/95/CE) Compliant
Interfaces
PC/104-Plus (PCI)
PC/104 (ISA). For signal pass-through only
Five Fast Ethernet ports. Physical 10/100BASE-T (magnetics) on board
External Watchdog port
Connector for Ethernet status LEDs
Physical Characteristics
Dimensions: 90 x 96mm (3.6" x 3.8")
Height: 11mm (0.4")
Power supply: Single +5V DC +/- 5%
Power consumption:
3.0W (typical)
4.5W (maximum)
Operating Temperature:
0 to + 60°C (standard)
-40 to + 85°C (extended)
Humidity: Up to 95% non-condensing
