To USB or Not to USB


USB 3.2 and Rat Trap plus Lego Obstacle Course

So it’s Saturday night at 11pm  (now 1145ish) and I’ve not blogged for several weeks so it’s time.

I visited China recently, and gave my card to (undisclosed) at (undisclosed) in the city of (undisclosed), China.
The engineer looked at my card (which has my picture), looked at me, then looked at me, then looked at my card and said

“I know you, I’ve been reading your blog for ten years” 

At this point, several feelings surface:

1) Do I know this person and have I met him before?
2) I really should blog more…
3) What do I do now?

And much later

4) Wait, I’ve been blogging for 10 years?  (Read the old blogs at your peril)


USB 3.2 is (almost) here

The USB-IF announced USB 3.2 Release 0.9 on July 25th when I really needed a topic to blog about.  So here it is.

This is always a problem for me writing about new specifications.  We’ve been contributing to the electrical and protocol specs for a year, and I never know what I can say and can’t so I say nothing.  In addition, this spec release is only available to USB members, so here’s what I can tell you from what you can figure out from the limited information in the press release.


Reminder: we are the only IP company with a Certified USB 3.1 Device Solution (PHY and Core) and Certified USB 3.1 Host Solution (PHY and Core).


USB 3.2 will double the current USB 3.1 speeds for 10 Gbps to 20 Gbps. It does this running data to along 2 lanes instead of a single lane.  The advantage of this approach is the PHY speed does not have to increase, it stays the same.  This means the cable length for the 20 Gbps (which is really 2 lane of 10 Gbps) stays at about 1m of cable.

The cool thing is if you double up the USB 3.0 speeds of 5 Gbps, you get 10 Gbps, and you can support a cable lenght of 2-3 meters.  Which is 2-3x longer than 1 meter.


(Yeah, I have a Masters Degree in Engineering and can(used to be able) to FFT so sure, I can multiply).


So the advantage you have is Speed for USB 3.2 Storage Devices which are now as fast as internal drives at 20 Gbps.
AND you get a longer cable of 2-3 meters which makes it super handy around the office and home.


This makes the PHY development task harder because you have to…

I can’t tell you because you need to be a customer.

For the controller, it’s an architecture change to bring in 2 lanes of data and bring them together at 2x the speed. It’s not as simple as doubling the clock speed.

Having said that, our engineers who have been working for 10-15 years on USB.  8 years ago, our team actually architected the USB 3.0 cores anticipating these updates so I’m super glad I work with our Synopsys USB team.

Okay, now the Blog is done, I’m going to go click on this link that says “5 foods to eat to increase your fitness level”


Doctor, Doctor Give me the news (Doctor Jokes)

Doctor: “I have some bad news and some very bad news.”
Patient: “Well, might as well give me the bad news first.”
Doctor: “The lab called with your test results. They said you have 24 hours to live.”
Patient: “24 Hours! Thats terrible! What could be worse? What’s the very bad news?”
Doctor: “I’ve been trying to reach you since yesterday.”

A man told his doctor that he wasn’t able to do all the things around the house that he used to do. When the examination was complete, he said: “Now, Doc, I can take it. Tell me in plain English what is wrong with me.”
“Well, in plain English,” the doctor replied, “you’re just lazy.”
“Okay,” said the man. “Now give me the medical term so I can tell my wife.”

A man speaks frantically on phone, “My wife is pregnant, and her contractions are only two minutes apart!”
“Is this her first child?” the doctor queries.
“No, you idiot!” the man shouts. “This is her husband!”


Lego + Rat Trap Obstacle Course

This safe for work (and kids) video gives some ideas for empty nest parents for fun activities after the kids have left the home



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