why uses a FPGA in DLPC3437 design, but DLPC3439 no FPGA?

Hi, Sir, 

Recently, I'm study DLPC3437 design for 1080P projector, and found one FPGA in the reference design. But I remember no FPGA in the DPLC3439 reference design. and both platforms are 1080p, so can I remove the FPGA from DPLC3437 design for cost saving?

Thanks

Br

Zhang Tao