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AR# 40455

XPS USB2 - How can I read/set Device Descriptor fields?

Description

I am using the XPS USB 2.0 Processor IP core in my design. I am trying to understand how the different Device Descriptor fields are set for a given configuration. Where can I learn more about these fields?

Solution

Device Descriptor fields are set during software design. For example, see the xusb_storage.h file in the $XILINX_EDK/sw/XilinxProcessorIPLib/drivers/usb_v3_02_a/examples folder. The structure "USB_STD_DEV_DESC" defines the device descriptor for this particular example.

Refer to the USB 2.0 Specification for more details on Device Descriptor fields.
AR# 40455
Date Created 02/04/2011
Last Updated 12/15/2012
Status Active
Type General Article
IP
  • XPS USB 2.0 Device