Single Pair Ethernet (SPE) comes to town.

By Peter Jones


Ethernet is continuing its long history of evolving to meet new needs. Over the past few years IEEE 802.3 has been working on the definition of BASE-T1 Ethernet. Unlike the BASE-T (e.g. 1000BASE-T) most of us are familiar with, SPE uses a single pair copper cable, and is targeted at very different markets.

The initial target market for BASE-T1 was automotive (see 1000BASE-T1 CFI). The more recent 802.3cg 10SPE project adds building and industrial automation to the target markets for SPE. These industries are on the path to Ethernet, and SPE is a key technology to enable the transition.  These trends are illustrated in the following slides from the 10SPE kick off (aka CFI).

 

10SPE supports 15m and 1000m point to point links with power. It also supports 25m CSMA/CD multidrop with PLCA (Physical Layer Collision Avoidance) to improve performance under load. 10SPE is designed to use the enormous installed base of single pair copper used in building and industrial automation today.

SPE offers us the chance to replicate the success of BASE-T Ethernet (e.g., 4+ Billion BASE-T switch ports have been sold), in market spaces not served by today’s Ethernet. As the “Voice of Ethernet”, the Ethernet Alliance is in a unique position to help guide SPE to broad adoption.

How can we make this happen? Here are some suggestions:

  • Consult the whole ecosystem about what’s needed
  • Collaborate with key industry bodies (e.g., IEEE 802.3, ISO/IEC, TIA, ODVA, PI, FieldComm)
  • Take advantage of having done this before with BASE-T
  • Prioritize “adoptability”

Please join us on March 25th 2019 at 8:00am PT for a 60 minute public teleconference to discuss this opportunity, and the work required to take advantage of it. You can register for this call at http://events.constantcontact.com/register/event?llr=iejgf4bab&oeidk=a07eg6bixdk853daeef.

I look forward to seeing you on the call.

Peter Jones

Ethernet Alliance SPE Subcommittee Chair

Note: More about Peter is at https://about.me/petergjones.