ADS1234 - Analog Input Control

Hi all,

I'm new to SPI communication and advanced electronics. I've asked to make a strain gage based application. When I searched on Internet, I found ADS1234 and after that I bought it. I looked all parts of datasheet but I couldn't find what I want. My question is that when I connect 4 loadcells individually, how can I read the values at SPI output? I mean analog inputs go into the Input mux but later how can I read them when I communicate with ADS1234 using PIC16F877?

Best regards,

Canfer