To USB or Not to USB


USB 3.0 hits Smart Phones & Tablets in 2012, (Yes 2012)

Happy New Year!

Yes, it’s still Happy.

My understanding: The world won’t end in 2012.

Which is great because according to the Ismail Rahman, CTO of the USB-IF says, that Mobile Phones and Tablets will support USB 3.0 in 2012 (PC World USB 3.0 in Smart Phones and Tablets article) 

Smartphones and tablets will also recharge faster through USB 3.0, as the power will flow faster than in USB 2.0, says Rahman

This is because a USB 3.0 Host port will provide up to 900mA of power for charging, which is more than the 500mA supplied by USB 2.0.  So he’s correct.

One thing PC World asks/says/challenges Ismail on:

But transferring data using the current USB 3.0 technology at such high data rates requires more power, which does not fit the profile of mobile devices.

Ismail responds:

“It’s not the failure of USB per se, it’s just that in tablets they are not looking to put the biggest, fastest things inside a tablet,” Ismail said.

He’s correct.  Another awesome response I might give is:

“Actually, USB 3.0 is more power efficient.  It transmits then shuts down.  USB 2.0 has a Host transmitting all the time with every device receiving signals all the time.

Also, at 10x the speed for only about 2x the power (in general) in means that a 10 minute transaction only 1 minute.  Then it turns off.  So it’s off for 9 minutes for USB 3.0 compared to USB 2.0.  So the power consumption is only 20% of USB 2.0.  So the battery lasts longer, about 5x longer just for the transfers…  USB 3.0 is better out of the box.”

There are some conditions, some secrets to the design at the system level to make sure this happen.  Basically, you need to be able to suspend the power to as much of the USB 3.0 elements as possible or shut down the power completely.

So Rahman points out USB 3.0 is coming to Tablets and Smart Phones in 2012, and theoretically he’s got some product knowledge as the CTO of the USB-IF.  I’m wondering if this is the TI OMAP 5 platform as announced by TI or something else?

USB at Home

You can install USB outlets at home for a mere $25.  Each port provides a full 1mA of charging which is good for charging your iPad or Kindle or Android phone, or BlackBerry or maybe your digital camera or cell phone. Got to for more info.   I know I could use them.



Today’s Donut Picture

I have a picture of a Tray of Donuts. I’m keeping it to myself.



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