KEY CHALLENGES:

System designers face a never-ending challenge of increasing system throughput and density. By aggregating two lower speed serial links together with a serial Mux/Demux device, designers can:

  • Halve the required number of physical lanes for the same throughput
  • Double system throughput with the same number of physical lanes or pins


The below diagram illustrates how pairs of 12.5Gb/s links are combined to form a bidirectional 25Gb/s link. An example application includes multiplexing the 4x10G lanes of a 40GbE link to 2x20G, thus either doubling the density of 40Gb Ethernet ports
or halving the number of signals.

KEY SYSTEM CONSIDERATIONS:

  • Supports industry communication standards
  • Protocol independent data payloads for datacom, telecom, storage, or other applications
  • Strong signal integrity ensuring reliable data transfer
  • Support Forward Error Correction (FEC) payloads for high-reliability
  • Package and power options supporting line card, daughter card and module applications are key to system integration, power and heat issues

THE MOSYS SOLUTION:

The MoSys MSH420S device is an ideal solution for multiplexing and demultiplexing high-speed serial links.

  • Two serial links transported across a single faster (2x) serial link provides:
    • Half the required number of physical lanes for the same payload
    • Double the payload for same number of physical lanes
  • Up to 5, Bi-directional, Mux/Demux channels in a single MSH420 device
    • Or up to 2 channels in a single, smaller MSH422S device (contact factory)
  • Supports critical industry standards, such as:
    • IEEE and OIF 10G, 25G, 40G and 100G standards
    • Protocol independent payload supports Datacom, Telecom, Storage applications
  • Independent PLLs per lane support different data rates per Mux/Demux channel within a single device
  • Signal integrity is key to ensuring reliable transfer of data
    • MoSys self-adapting RX equalizers for ease of connection
    • Reduce board design and bring-up time by eliminating per-lane “tuning”
  • Cost/performance must be considered in any system design:
    • Some devices are available in volume at less than $50 each

KEY POINTS SUMMARY:

  • Mux/Demux of serial links can double the throughput or halve the number signals in your system design.
  • Adherence to industry standards for interoperability with other available industry devices
  • Strong signal integrity and package/power options support cable, backplane, printed circuit boards and module level solutions.

TYPICAL APPLICATIONS:

  • Datacom, Telecom, 5G Networks
  • Datacenter and Cloud Interconnects
  • Storage and Data Acquisition Systems

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