What’s the outlook for 25G x 4 versions of 100G Ethernet?
DesignCon is a great place to find out what’s going on with the next
generation of high-speed Ethernet products. Today they use four to ten
10G serdes ganged together to create 40 and 100G Ethernet links for core
network routers and switches. These are some of the most complex and
costly designs in networking.
A 100 Gbit/second Ethernet test module.
That groaning sound you hear around San Jose’s Tasman Drive is the sound
of several hundred comms engineers trying to drive the industry to
25-28G serdes for 4x25G versions of high-speed Ethernet. From what I
hear, progress is good.
So I am bringing another big question to DesignCon: Is it soup yet?
Experts at an evergreen panel on serdes will have answers—or at least strong opinions. Don’t get your expectations up too high. The title of the panel refers to “closed eyes” at 100G.
If you miss the panel, there are plenty of other opportunities. Look for 28G experts at papers by connector specialist Samtec or serdes designers Semtech. Three other groups will present work in the area—Intel and Altera, Agilent and Xilinx and a team from Dell, Molex and Texas Instruments.
Links to sessions mentioned above:
SerDes and T&M experts panel on closed eyes at 100G
Samtec gives connector-level view on 28G board-level designs
Paper from Semtech 28G specialists
Intel and Altera on 25G and beyond channel margins
Molex, Dell and TI on AC coupling at 25G and beyond
28G serdes measurement by Xilinx and Aglient