If read datasheet for Cypress Semiconductor IC CY7C68013(14, 15, 16)A, it's known that ICs can act as extended parallel port (EPP). Cypress Semiconductor provides a managed library CyUSB.dll for control this chips. I've searched many sources, including official forum, but did not found examples of code with EPP mode, that I need. Can anyone give some help?
I assume you are using a generic development board or custom hardware you have built. Likely, library CyUSB.dll won't be enough, you need to have correct firmware developed/uploaded to CY7C68013.
If you are purchased a CY7C68013 based usb to parallel converter, you should anyway see it as parallel port in Windows.
For a parallel interface app. note and general guidance, following may help: https://community.cypress.com/thread/10786?start=0&tstart=0
http://www.cypress.com/documentation/code-examples/usb-hi-speed-code-examples
And following is an example for building USB to parallel port device using CY7C68013: https://www-user.tu-chemnitz.de/~heha/basteln/PC/USB2LPT/ul-17.en.htm
Finally you may ask your question to Cypress forums, providing your application/hardware details.
Hope this helps..