Quad IMUX Ethernet Mapper

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The DS33Z41 extends a 10/100 Ethernet LAN segment by encapsulating MAC frames in HDLC or X.86 (LAPS) for transmission over up to four interleaved PDH/TDM data streams using robust, balanced, and programmable inverse multiplexing. The Interleave Bus (IBO) serial link supports seamless bidirectional interconnection with Dallas Semiconductor's T1/E1 framers and transceivers.

The device performs store-and-forward of packets with full wire-speed transport capability. The built-in Committed Information Rate (CIR) Controller provides fractional bandwidth allocation up to the line rate in increments of 512kbps.

DS33Z41: Functional Diagram DS33Z41: Functional Diagram Enlarge+

Key Features

  • 10/100 IEEE 802.3 Ethernet MAC (MII and RMII) Half/Full Duplex with Automatic Flow Control
  • Layer 1 Inverse Multiplexing Allows Bonding of Up to 4 T1/E1/J1 or DSL Links
  • Supports Up to 7.75ms Differential Delay
  • Channel (Byte) Interleaved Bus Operation
  • In-Band OAM and Signaling Capability
  • HDLC/LAPS Encapsulation with Programmable FCS, Interframe Fill
  • Committed Information Rate Controller Provides Fractional Allocation in 512kbps Increments
  • Programmable BERT for the Serial Interface
  • External 16MB, 100MHz SDRAM Buffering
  • Parallel Microprocessor Interface
  • 1.8V Operation with 3.3V Tolerant I/O
  • IEEE 1149.1 JTAG Support
  • Applications/Uses

    • Bonded Transparent LAN Service
    • Ethernet Delivery Over T1/E1/J1, T3/E3, OC-1/EC-1, G.SHDSL, or HDSL2/4
    • LAN Extension

    Technical Documents

    Tutorial 3849 Ethernet-over-PDH Technology Overview
    App Note 3411 DS33Z11 - Ethernet LAN To Unframed T1/E1 WAN Bridge
    App Note 3363 New Ethernet Systems Distribute DC Power with Data

    Quality and Environmental Data

    Product Reliability Reports: DS33Z41.pdf 
    Lead-Free Package Tin (Sn) Whisker Reports
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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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    Type ID Title
    Evaluation Board4797DS33Z41DK Ethernet Transport Design Kit