SLVUB62B June 2017 – November 2020
The DP source receptacle routes DP lanes for port A/B, AUX for port A/B, HPD for port A/B, as well as DP port A/B select. The HD3SS3412 is used to MUX the DP source from the full-size DP receptacle to the USB Type-C alternate mode MUX (TUSB546) for port A/B. Only one of the ports can support DP at a time. The DP source MUX is controlled by GPIO0 that allocates the DP source signals to the appropriate port. Figure 5-7 shows the DP source MUX Configuration
Only one DP source can be used on either port A or port B at the same time.