Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
krisi
User Rank
Author
Re: 56G serdes? 802.3bj panel?
krisi   2/7/2014 10:59:21 AM
NO RATINGS
Have fun at OFC then, used to go to that trade show...and yes, I rememebr John D/Ambrosia starting 100G efforts 10 years ago...I am just curious what is teh state-of-the-art of this technlogy, used to be very power hungry...if anyone else is interested in giving a talk on this topic feel free to ping me...Kris

MeasurementBlues
User Rank
Author
Re: 56G serdes? 802.3bj panel?
MeasurementBlues   2/7/2014 10:53:40 AM
NO RATINGS
Grenoble and Vancouver are unlikely, but I will be in San Francisco in a few weeks for OFC. 100G has been around there for years. See http://edn.com/electronics-news/4380966/100-Gbps-Ethernet-In-demand-now from 2008.

krisi
User Rank
Author
Re: 56G serdes? 802.3bj panel?
krisi   2/7/2014 10:48:58 AM
NO RATINGS
thank you @MeasurementsBlues...I am surprised there is no FEC...what kind of Bit Error Rates (BER) do people achieve without it? Kris

krisi
User Rank
Author
Re: 56G serdes? 802.3bj panel?
krisi   2/7/2014 10:46:47 AM
NO RATINGS
I think he does! You are clearly the winner...I will buy you few beers as well if you could come to Grenoble or Vancouver conference (www.cmosetr.com) and talk about 100G challenges...Kris

MeasurementBlues
User Rank
Author
Re: 56G serdes? 802.3bj panel?
MeasurementBlues   2/7/2014 10:37:42 AM
NO RATINGS
@krisi, does Rick Merritt owe me a beer?

MeasurementBlues
User Rank
Author
Re: 56G serdes? 802.3bj panel?
MeasurementBlues   2/7/2014 10:36:05 AM
NO RATINGS
@krisi, most of those data streams use 66b/64b encoding and some may use 128b/127b. There was a lot of talk about using forward error correction, particularly where these serial buses might carry data-storage protocols. For example, SATA protocols riding on PCI3 GEN 3 physical layer.

See Exercise those storage devices for more.

krisi
User Rank
Author
Re: 56G serdes? 802.3bj panel?
krisi   2/7/2014 10:25:44 AM
NO RATINGS
thank you Martin...28 Gb/s it is...what kind of errror correction is used that is responsible for the extra 3 Gb/s?...Kris

MeasurementBlues
User Rank
Author
Re: 56G serdes? 802.3bj panel?
MeasurementBlues   2/6/2014 10:39:08 PM
NO RATINGS
I just posted an article about characterizing a 28Gb/s channel and how to de-embed the losses from the channel to get a clean measurement of the signal at the receiver.

DesignCon paper and tutorial explain de-embedding

 

MeasurementBlues
User Rank
Author
Re: 56G serdes? 802.3bj panel?
MeasurementBlues   2/6/2014 10:37:06 PM
NO RATINGS
100G Started as 1x10G and now is 2x25G. Well, 4x28G because of bit overhead. Most of the talk at DesignCon is per lane rather than aggregate. The major issue with aggregating is channel-to-channel crosstalk. Most of the issues are just simple getting 26G and 32G to run reliably, All kinds of issues come up such as insertion loss, reflections, intersymbol interference, and skew. At these speeds, differential pairs mismatched by even 1mm have skew prodlems.

rick merritt
User Rank
Author
Re: 56G serdes? 802.3bj panel?
rick merritt   2/4/2014 2:54:50 AM
NO RATINGS
@Kris: A good question: what was the highrest bandwidth per pin shown at DesignCon. A beer for whomever can answer that one!

Page 1 / 2   >   >>


Radio
NEXT UPCOMING BROADCAST
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.
Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...