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1. Since you are designing a DRP design, CYPD3177 is not right chip for your design. If you are not going to transmit USB2.0 data but you need support charging protocol, You'd better to choose CYPD3171 as your target device. The D+/D- shall wire to DP0/DM0 of CCG3PA, it can configured to support all of charger.
2. If you would like to have a internal switch inside of CCGx, CCG5 is the option for you.