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Re: Good move
krisi   7/24/2014 7:26:47 PM
thank you Janine, makes sense...I presume 25G links use FECso the real number is higher than 25G, right?

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Re: Good move
JanineLove   7/24/2014 7:24:14 PM
That's exactly right @Krisi, 4x25

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Re: Good move
krisi   7/24/2014 7:18:22 PM
Not sure...why 25 Gb/s?...such a strange number...I haven't followed this for years but I would think 40 Gb/s was more natural...or is it 4x25=100?

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Re: 25G Ethernet on Tap at IEEE
docdivakar   7/22/2014 7:15:12 PM
It seems like many flavours of datacenter ethernet are settling down! Couple of years ago, there was 10Gbps x 4 and 10Gbps x 10 for 40Gig and 100Gig ethernet, some what influenced by the legacy InfiniBand camp. I am glad to see 25Gbps getting the approval of the majority.

We did have healthy discussions around 25/28gig SerDes couple of years ago after OIF / CEI standard for 25G class designs was approved:


Here is another link to a presentation on signal integrity challenges for 100Gig ethernet that considers the 25/28Gig lanes as one of the options (focus mostly on the backplane).


MP Divakar

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Good move
JanineLove   7/22/2014 4:10:32 PM
There are certainly specific issues, complexities, and challenges of moving to 25G or higher, and I'm glad to see this decision by IEEE. For futher reading/info: Steve Tarnovich at EDN posted an article on 100GbE recently, and this is a major topic that we deal with at DesignCon.

In conjunction with unveiling of EE Times’ Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. One of Silicon Valley's great contributions to the world has been the demonstration of how the application of entrepreneurship and venture capital to electronics and semiconductor hardware can create wealth with developments in semiconductors, displays, design automation, MEMS and across the breadth of hardware developments. But in recent years concerns have been raised that traditional venture capital has turned its back on hardware-related startups in favor of software and Internet applications and services. Panelists from incubators join Peter Clarke in debate.
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