Breaking News
Comments
Newest First | Oldest First | Threaded View
vediappan
User Rank
Rookie
re: Freescale ups ante with quad-core Qorivva
vediappan   12/21/2012 12:49:38 PM
NO RATINGS
Automotive microcontrollers are just as safety conscious as the Space Shuttle, since human lives are at risk, which is why Freescale adopted a similar strategy to have a completely redundant core whose results are compared with the main core at each time step, allowing errors to be corrected before they cause loss of life.

R_Colin_Johnson
User Rank
Blogger
re: Freescale ups ante with quad-core Qorivva
R_Colin_Johnson   4/25/2012 4:39:15 PM
NO RATINGS
The redundant core is performing every operation that the main core performs, just one clock step behind, which is then compared with a special error detection and correction unit. If the error can be corrected, it is, if it cannot, then the whole system goes into "limp home" mode, where the driver is instructed to take the car in for maintenance ASAP.

Neo10
User Rank
Rookie
re: Freescale ups ante with quad-core Qorivva
Neo10   4/25/2012 3:02:57 AM
NO RATINGS
So in effect the performance is still low enough for every computation to be done by a single core. Or is it just doing the data correction for memory to peripheral transactions?

R_Colin_Johnson
User Rank
Blogger
re: Freescale ups ante with quad-core Qorivva
R_Colin_Johnson   4/24/2012 11:00:40 PM
NO RATINGS
Automotive microcontrollers are just as safety conscious as the Space Shuttle, since human lives are at risk, which is why Freescale adopted a similar strategy to have a completely redundant core whose results are compared with the main core at each time step, allowing errors to be corrected before they cause loss of life.



Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
1 Comment
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
7 comments
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
37 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
138 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

latest comment hw20110 Wish I could have a car like that!
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)