D153E - PC/104 Ethernet Interface

The D153E is a multi-purpose dual Ethernet Controller Interface with embedded processing power, designed for PC/104 host systems. The integrated Ethernet controllers, designed by duagon, feature hardware prioritisation and very low jitter. The intelligent component encapsulates all Ethernet-relevant functions on a standardized PC/104 module. It can be considered as a communication module that handles various Ethernet communications protocol. The D153E lowers the processing performance requirements on the host system, as there is no need for additional CPU power for the different real-time Ethernet stack.

The interface card is fully compliant to IEEE 802.3 and supports features like Auto-Polarity, Auto-Negotiation and Auto-MDI-X.

An optional full-featured 3-port switch can be integrated to enable ring topologies directly on the D153E. The optional bypass relays keep the ring topology also in case of a malfunction of the D153E. The device further supports the Rapid Spanning Tree Protocol (RSTP) according to IEEE 802.1w. For additional redundancy protocol please contact duagon.

The D153E is prepared for the “Ethernet on traction vehicles” standard IEC 61375-3-4. It supports various Ethernet protocols like TRDP, CIP, IPTCom, PROFINET, UDP or TCP/IP. Optionally the device supports VLAN-tagged packets according to IEEE 802.1Q. This feature may be used to separate network traffic, e.g. for different protocols.

The interface card integrates the magnetics with a galvanic isolation of 1.5 kVrms, the PHY, the complete protocol controller and a simple host interface.

With duagon’s driver kit, the D153E, featuring an easy-touse UART emulation, can be integrated very quickly on almost any host system through a small register set (each 8-bit long) - The D153E does not need a wide address range compared to a solution based on dual-ported memory.

The D153E is designed for harsh rolling stock environments and is fully compliant to EN 50155.


  • Proprietary Ethernet stack for process data prioritization with decreased data latency
  • Support for most common real-time Ethernet protocols including EtherNet/IP – CIP, IPTCom, PROFINET and TRDP
  • Optional full-featured 3-port switch and onboard bypass relays
  • Support for redundancy protocols, e.g. RSTP
  • Optional support for VLAN-tagged packets according to IEEE 802.1Q
  • duagon web server for remote firmware updates
  • -40 to +85°C operating temperature