Could u please explain ur requirement in detail? When u say connect FX3 and GX3, Are u planning to use FX3 as HS host?
Sorry, I missed ur reply (http://www.cypress.com/forum/usb-30-super-speed/connection-fx3-and-gx3). FX3 has the capability to work as HS host, but please create a tech support case and ask Cy engineers whether FX3 has enough memory for GX3 device driver.
Thank you for your reply~~
I'll ask Cy engineers