How can SPD5118 work in I3C mode with push-pull drivers for both host side and local side?

Question

How can SPD5118 work in I3C mode with push-pull drivers for both host side and local side? 
 Is there any configurable register or method to set SPD5118 as push-pull drivers for both host side and local side in I3C mode?

OV_Renesas · Answer

Hi There, Thank you for posting your question online and apologies for the long delay. 
 For the host side the pull-up resistor is supposed to be designed outside of the chip to support I2C open Drain mode. 
 When power up. SPD5118 is working in I2C mode, pull-up resistors are needed. 
 In I3C mode, there is also open drain phase, which also requires pull-up resistors, in push-pull phase the existing pull-up resistors will not interfere with the transaction of I3C if it is in the right range of value. Best Regards, OV_Renesas