ILI9341 pinout problem
Since IM pins are not exposed , we can use only 16bit interface mode.
I tried keeping the configurations for above LCD with 16bit paralled interface and 8080-I protocol, and it worked fine!
Ans 2 -Yes D/CX = RS pin
Ans 3: SDCS is SD card chip select pin.
For pin connection I found some Holy person sharing it on drive along with stm32 fsmc 16bit source code.