TX1 USB2/USB3 port vs. USB controller

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX1
1

Hello, anyone can help to confirm the TX1 exposed USB2.0 port mapping with USB controller in chip?
Right now there are 3 USB port exposed (USB0/USB2/USB3).
It looks USB0 (Pin B39/B40) should be mapped to USB2.0 controller #1 becuase it is OTG;

questions are aboyut USB2(Pin #A38/A39)/USB3 (PinB42/B43) , another possibility is they are both mapped to USB2.0 controller #2, but USB2.0 controller #2 only has HSIC port (from X1 datasheet) .

So it looks for me there are two possibilities:

  1. TX1 USB2/USB3 are mapped to USB2.0 controller #1 as well (on carrier board they just simply dispatched to a Standard A port)

  2. TX1 USB2/USB3 are mapped to USB2.0 controller #2, that means one on-module USB PHY chip must be used.

Anyone from Nvidia can help to confirm?

2

USB2 and USB3 are both mapped to XUSB controller, not USB2.0 controller. XUSB controller provides mechanisms to communicate with USB2.0 peripherals.

3

@Trumany or that is out of my expectation – USB2 and USB3 both under XUSB controller.

Thanks for the quick reply!

4

@Trumany one more question, the USB1 port, which is not exposed but internally connected with WIFI on module, that is also under XUSB controller?

To be more precise, if USB1/2/3 are all under XUSB 2.0 controller, they shall have separate datapath with XUSB 3.0 controller?

5

USB1/2/3 are different ports but share one same controller. You can get details in chapter 22 of TRM.