An FPGA chip includes one functional unit, one pre-allocation manager, and wiring segments. The functional unit includes a first module CPE and a second module PLF. The pre-allocation manager may be connected by means of one of the wiring segments. By configuring one pre-allocation manager, data transmission directions of the wiring segments may be changed. The functional unit is connected to one pre-allocation manager by means of a conventional line. The first module CPE and the second module PLF which are adjacent in the same functional unit are connected by means of a cross-connection line. The second functional modules are interconnected by means of a conventional routing system. Different functional blocks can be connected to each other from any position of a circuit.