Ethernet Over SONET/SDH Mapper

Provide the Industry's Most Compact and Efficient Solution for Transporting Ethernet Traffic Over SONET/SDH

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The DS33M30 family of products provides a compact and efficient solution for transporting Gigabit Ethernet traffic over OC-3/STM-1 optical networks. With the addition of an optical transceiver, Ethernet PHY, DDR SDRAM, and host processor, a complete solution of GbE over OC-3/STM-1 can be implemented. The family supports Ethernet over SONET/SDH (EoS) at VC-4, "Next-Generation" EoS higher order mapping with multiple concatenated VC-3s, and Ethernet over PDH over SONET/SDH (EoPoS) with up to three virtually concatenated DS3/E3 tributaries. The supported frame encapsulations include GFP-F, HDLC, cHDLC, and X.86 (LAPS).

Key Features

  • Support for EoS in One STS-3c/VC-4, EoS Over Up to Three Concatenated STS-1/VC-3s, and EoPoS Over Up to Three Concatenated DS-3s
  • Two Independent 155.52Mbps SerDes Ports
  • One 10/100/1000 IEEE 802.3 Ethernet MAC Port
  • Configurable MII/RMII/GMII MAC Interface
  • GFP/LAPS/HDLC/cHDLC Encapsulation
  • IEEE 802.1Q VLAN and Q-in-Q Support
  • Add/Drop OAM Frames from µP Interface
  • Quality of Service (QoS) Support
  • Traffic Policing Through CIR/CBS
  • Classification Through PCP or DSCP
  • Supports Up to 512Mb DDR SDRAM Buffer
  • SPI™ and Parallel Microprocessor Interfaces
  • 1.8V, 2.5V, 3.3V Supplies


  • Ethernet Service Delivery over SONET/SDH,
  • LAN Extension
  • Multi-Service Provisioning Platforms (MSPPs),
  • Transparent LAN Service,

Technical Documents

App Note 4102 Using Ethernet over PDH in SONET/SDH Networks

Tools & Models

  • DS33M31 IBIS Model
  • Product Reliability Reports: DS33M31.pdf 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


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    Evaluation Board6053DS33M33DK Demo Kit for the DS33M33
    Evaluation Board6052DS33M30DK Demo Kit for the DS33M30