Embedded Systems Conference
Breaking News
Newest First | Oldest First | Threaded View
James Awad
User Rank
re: Changing the status quo in processor design: why synchronous is no longer ‘cool’
James Awad   8/9/2011 5:38:41 PM
Dear DK8PP, Thanks for your feedback. I am of course aware of a lot of the past attempts at building asynchronous processors, which is why I feel asynchronous has gotten a bad reputation. Today there are many companies working to revolutionize the semiconductor space with new products and tools for async. If you take a look at some of Octasic's products, you'll see that we've brought to market 2 generations of DSPs that deliver on the promise of lower power and smaller silicon. So I appreciate your skepticism and would be glad to discuss further with you! James

Code Monkey
User Rank
re: Changing the status quo in processor design: why synchronous is no longer ‘cool’
Code Monkey   8/9/2011 4:12:56 PM
Chuck Moore's company, GreenArrays, is producing sea-of-async-computers. The MISC story has a long history, starting at iTV, moving through Intellasys and landing at GreenArrays. Chuck designed his own chip design tools to model his asynchronous chips and make the GDSII. It would be interesting to see a history of how his tools evolved from 1980 until now. The chips do indeed achieve very low power, but at the cost of being way outside the mainstream. However, a sea-of-async-computers architecture lends itself to future process nodes where "dark silicon" becomes an issue because of heat generation.

User Rank
re: Changing the status quo in processor design: why synchronous is no longer ‘cool’
DK8PP/M   8/9/2011 8:01:56 AM
Well, nice idea, but real results were not so promising. In the 1990s, there was the AMULET group in the Department of Computer Science at the University of Manchester, who developed an asynchronous version of the ARM6, the AMULET1. It used 75% more transistors than the ARM6, achieved about 50% less performance and consumed about the same power. In today's technologies, we have rather high static currents, which means the number of transistors contributes more to power consumption than the toggle rate. Nice idea, worth to be followed-up, but I remain sceptical.

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
Max Maxfield

My Mom the Radio Star
Max Maxfield
Post a comment
I've said it before and I'll say it again -- it's a funny old world when you come to think about it. Last Friday lunchtime, for example, I received an email from Tim Levell, the editor for ...

Bernard Cole

A Book For All Reasons
Bernard Cole
1 Comment
Robert Oshana's recent book "Software Engineering for Embedded Systems (Newnes/Elsevier)," written and edited with Mark Kraeling, is a 'book for all reasons.' At almost 1,200 pages, it ...

Martin Rowe

Leonard Nimoy, We'll Miss you
Martin Rowe
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.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
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
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 ...
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, ...
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Flash Poll