Signal processing card system based on FPGA

The invention discloses a signal processing card system based on FPGAs. The system is characterized in comprising a first FPGA, a second FPGA and a third FPGA. The models of the first FPGA and the second FPGA are XC7VX690T-2FFG1927I. The model of the third FPGA is XC6SLX100-2FG484I. The first FPGA and the second FPGA are connected through four groups of independent GTHx4. The line speed of each lane can reach 3.125 Gbps. The first FPGA and the third FPGA are connected in parallel through at least 20 pairs of LVDSs. The second FPGA and the third FPGA are connected in parallel through at least 20 pairs of LVDSs. Starting configuration and online loading can be carried out on the first FPGA and the second FPGA by the third FPGA. The first FPGA is also connected with an FMC interface. LA/HA/HB signals of the FMC interface are connected with the first FPGA according to LVDS differential pairs. The data rate of each pair of LVDS differential links can reach 1.25 Gbps. The first FPGA, the second FPGA, the third FPGA