Zedboard and USB 2.0 Device mode

Question

Hi,

I am new to the Zedboard and before jumping in, I have one question for you. I feel like I can use the USB 2.0 OTG port as USB CDC device in High Speed (480 Mbps).

Can someone confirm this?

The UART-TO-USB is only doing 2.0 Full Speed (12 Mbps).

I need this high speed USB to interface the Zedboard with Matlab before migrating Matlab's algorithms code to the Zedboard.

Thank you!

Paul

bhfletcher · Accepted Answer

The USB 2.0 OTG port on Zynq is hardware-capable of high-speed mode, as documented in Chapter 15 of the Zynq TRM. Of course, like any protocol, there is overhead so you will never actually hit 480 Mbps in a real application.

In terms of example designs and advice, here is what I could find. I do not see where anyone has documented performance of the Zynq USB 2.0 peripheral in device mode.

http://www.wiki.xilinx.com/Zynq-7000+AP+SoC+USB+CDC+Device+Class+Design+Example+Techtip

http://www.wiki.xilinx.com/Zynq+Linux+USB+Device+Driver

http://www.xilinx.com/support/answers/47538.html

Bryan