29 Dec '14, 3pm

Ethernet Revs for Connected Cars

Tomorrow's cars are moving to Automotive Ethernet to get the bandwidth they need and lower the weight of wiring harnesses. As you may have already noticed via that pesky “check engine” light, cars today are highly computerized. From monitoring engine temperature to whether your gas cap is open, even the least-expensive, bare-bones car has some sort of computer in it. Data is usually being passed around on a megabit, half-duplex communication Controller Area Network (CAN). While there are a few more notable schemes, they all share the similarity that they communicate over a single twisted pair using differential signaling. They are very robust and very well tested. However, they are exceedingly slow compared to modern technology. In order to get around this limitation, automotive manufacturers have started cramming more and more CAN buses into a car. In fact, today’s automo...

Full article: http://www.eetimes.com/author.asp?section_id=36&doc_id=13...

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