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Since CYPD3171 and 3175, as well as Southchip's SC8915 and 8815, are pin to pin compatible you can configure it to work as a Power bank application.
The following changes has to be carried out:
1) For making it a DRP, you need to modify the hardware like adding consumer FET and checking the VBUS_IN_DISCHARGE connections.
2) And the firmware should be changed for the required application.
You can refer application diagram form the datasheet for additional details.
I hope this has answered your doubt.