Embedded Systems Conference
Breaking News
Comments
Oldest First | Newest First | Threaded View
Page 1 / 2   >   >>
Susan Rambo
User Rank
Author
Oscilloscope watch teardown!
Susan Rambo   2/3/2014 12:42:47 PM
NO RATINGS
Wow, I missed the Oscilloscope watch teardown at the show. Good slideshow. I think you hit some important stuff at the show. Martin Rowe might want to chime in about some developments in PCI-Express he saw from the show.

rick merritt
User Rank
Author
56G serdes? 802.3bj panel?
rick merritt   2/3/2014 3:07:33 PM
NO RATINGS
I did NOT get to the LSI session om 56G serdes or the panel on 802.3bj 100GbE backplanes.

I'd love to hear a report from anyone who did!

krisi
User Rank
Author
Re: 56G serdes? 802.3bj panel?
krisi   2/3/2014 5:46:52 PM
NO RATINGS
so what is the highest IO bandwidth per pin in all these solutions? 100G in parallel was demonstrated in R&D several years ago (you just need enough pins to carry 100G in aggregate)

Ed Connolly
User Rank
Author
PCB material
Ed Connolly   2/3/2014 6:06:45 PM
NO RATINGS
What is the laminate?

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!

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.

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

 

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   2/7/2014 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.

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?

Page 1 / 2   >   >>


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)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Martin Rowe

Leonard Nimoy, We'll Miss you
Martin Rowe
1 Comment
Like many of you, I was saddened to hear the news of Leonard Nimoy's death. His Star Trek character Mr. Spock was an inspiration to many of us who entered technical fields.

Max Maxfield

Awesome 3D Electronic Sculptures
Max Maxfield
10 comments
I recently received an email from someone we'll call Martin (because that's his name). Martin's message was short and sweet. In its entirety it read: "You need to see this!"

Rajaram Regupathy, Cypress Semiconductor

Add USB Battery Charging Protocols to an Android-Based Design
Rajaram Regupathy, Cypress Semiconductor
Post a comment
Editorial Note: Excerpted from Unboxing Android: A hands on approach with real world examples, by Rajaram Regupathy, the author takes you through the process incorporating effective power ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
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 ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...
Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Flash Poll