I have a DFP implementation that I am trying to debug. I have scoped both CC1 and CC2 pins and they alternatively toggle low when a downstream device is connected. I also have the EN_CC_N signal tied to GND to enable the CC controller. My understanding is that this should be enough to assert the ID signal to it's low state. However this does not seem to be happening. In my implementation therefore my yellow LED does not come on and the SS mux does not become enabled. 3.3V and 5V USB rails look healthy. I've noticed that the DIR pin remains at 3.3V regardless of the state or orientation of the USB C connection. I've attached a screenshot of my schematic.
Thanks,
