Developing LSI for High Speed Next Generation Communication Interfaces

Feb 19, 2010

NEC Corp. announced today the development and successful demonstration of LSI technology for next-generation high-speed serial communication interfaces. This new technology allows inter-chip communication that is three times faster than modern communication interface standards, such as USB 3.0 and PCI Express 2.0, without using complicated transmission modes like multilevel transmission.

In recent years, due to the appearance of high-definition (HD) TV and 3D video content, the volume of data being processed for personal use has rapidly grown. This growth has resulted in greater demand for high speed transmission of data both between and within a wide variety of equipment. In order to provide for this demand, various types of sophisticated transmission schemes have been proposed to compensate for the large waveform distortion of input signals fed to the receiver, and to reach high-speed communications of more than 10 Gb/s to facilitate next-generation USB and PCI Express.

However, application of such transmission schemes is quite limited as their complexity is not compatible with widely-employed binary transmission schemes used in current USB and PCI Express.

NEC and NECEL's newly developed high-speed communication interface technology utilizing binary transmission schemes enable data rates of 16 Gb/s, which is approximately three times faster than existing communication interface standards, such as 3.0 and PCI Express 2.0.

Conventional equalizers correct the distortion of a receiver's input signal waveform by feeding back received data to the input signal waveform. However, as data rates grow higher, the time allowed for feedback operation becomes shorter, making the correction of distortion difficult.

In the newly developed technology, a feed-forward type waveform equalization is employed within the analog domain: the branched input signal is delayed by one data period and is then added to the original input signal waveform. This procedure greatly reduces the nearest-neighbor inter-bit interference in the signal waveform and thus successfully alleviates the issue of feedback-time constraint inherent in conventional equalizers.

NEC and NECEL presented the results of this research on February 9 at the IEEE International Solid State Circuits Conference (ISSCC 2010), held February 7 -11 in San Francisco, California, U.S.A.

Explore further: Halogen-free leaded multilayer ceramic capacitors for automotive and general-purpose applications

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Jay Z to acquire Wimp music service

13 minutes ago

US rap star Jay Z will make a $56-million foray into the music streaming business by taking over the Norwegian service Wimp, its shareholders confirmed Friday.

Scientists trial system to improve safety at sea

1 hour ago

A space scientist at the University of Leicester, in collaboration with the New Zealand Defence Technology Agency and DMC International Imaging, has been trialling a concept for using satellite imagery to ...

How to harness the wind

1 hour ago

With the abundance of wind in the Great North, one might think that harnessing it would be a breeze. But that isn't the case. Fortunately, a Ryerson researcher has found a way to address the major challenges ...

When Facebook goes down it takes big chunks of the internet with it

1 hour ago

Checking social networks is a morning ritual for many, and when that routine is disrupted – as it was recently when Facebook's servers went down – its absence can come as a surprise. But what also becomes apparent is that when the world's most popular social network is inaccessible, so t ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.