AFE4900EVM: Can we have our own customized PRF cycle to get the data for PPG only?

I am a little confused on how to use this sensor in my application. In short, I am planning to acquire around 8 phase of readout from 3 different photodiodes connected to the sensor. What I understood is that this device can have up to 4 phase for one PRF cycle.

However, the registers of this sensor that are available are quite wide, hence can I make my own timing diagram so that I can have a 8 phase readout immediately from the sensor?

Thank you!