I was looking at the pinout of USB C connector from the following page.

https://www.allaboutcircuits.com/te...pe-c-which-pins-power-delivery-data-transfer/

I have some questions.

1- What are plug and receptacle. I guess this is male and female connector please correct me
2- Is that true that we can have 2 x USB 3.0 on USB C ?
3- What is SBU1 and SBU2 ?

 

----> https://en.wikipedia.org/wiki/USB-C

 

I am still not getting it but something is clear.

The receptacle connector has two D+ pins and two D- pins- while plug connector has only one D+ and one D-. The same is true for CC pins. The receptacle connector has two CC pins- while plug connector has only one CC pin. This means that the USB C cable has one D+, one D- and one CC. This make sense.

I also notice that both receptacle and plug has two differential pairs of SS TX and two differential pairs of SS RX. Does it means that USB C cable has actually two differential pairs of SS TX and two differential pairs of SS RX ?

 

As Wikipedia notes, the USB C connector is designed to be reversible, as you rotate/reverse the connector when using it.

I actually don't know if it uses 2 lanes. Of course it could be possible, using a lane for a simple reverse seems a waste of data rate. Check the standard docs: https://www.usb.org/usb-type-cr-cable-and-connector-specification. They're free!

 

That true, the USB C is reversible connector which means that we can turn the connector 180 degree while connecting the cable. This is s new feature in USB C. This shows that there is only one lane (1 x USB 3.0) in the cable and inside the connector both sides are connected. I appreciate your comments on this point.