I am working in a design that includes USB 2.0 development with ULPI interface (USB3343 chip). As I am using Xilinx Spartan 7, I am considering to use the vendor's USB 2.0 IP, but Xilinx is not answering my request for IP cost (it's paid). I would like to ask you your opinion: a) Do you have good direct experience with other IP vendors? What USB 2.0 IP for FPGA do you recommend? b) Would you instead recommend developing in-house solution? Thanks.
I tried contacting Xilinx with the online form but there is no answer from them.
