Setting the address of Deserializer
Look at datasheet table 10. to determint how to select coax pin with CX/TP.

Look at datasheet table 1. to determine address when address pins are grounded.

PCLK should be sent from the transmitting end. PCLK should be within TFT datasheet limits. We don't know the parameters of the display, nor the transmitting end, so any guess is good. It is best to stick with exact standard formats instead of rough calculations.