SetFeature request in SX2

Question: Who handles the SetFeature request in SX2? How does the SX2 support the test modes for electrical compliance testing as defined in section 7.1.20 of the USB 2.0 specification?

 

Answer:

The SetFeature request will be handled by the SIE in CY7C68001. You need to ensure that the SX2 is enumerated successfully by the external master. The EZ-USB SX2 is an SIE-only device. A master is required to tell SX2 to connect. SX2 is intended to be used in self-powered mode. Therefore, when the diagnostic driver is loaded by the operating system to run the test suite, the SX2 should still be running and be ready to test.