PCM1802 with ESP32-Wroom-32

Hello, everyone.

I'm developing an analog to digital audio conversion project at my school, and while using the PCM1802, I had some questions regarding the clock signals. To use the PCM1802 in slave mode, should I provide the SCKI clock signal to it, or is that only necessary when using it in master mode? Because in the I2S settings in the software, only the BCK, LRCK (WS), and FSYNC clock signals are defined. It's worth noting that the PCM1802 has 4 pins designated for clock signals (SCKI, BCK, LRCK, and FSYNC).
Or should I generate an external clock signal to provide to the SCKI terminal on the PCM1802?

Thank you in advance!