An integrated circuit is provided. The integrated circuit includes a control circuitry (160), a plurality of pins (150), and a plurality of driving units (DU) coupled to the pins. The control circuitry provides a plurality of control signals (Ctrl) according to data (Dout) to be transmitted. The pins are coupled to a device (second chip 130) via a plurality of conductive traces (190) of a printed circuit board (PCB 120). The control signals control each of the driving units to selectively provide the data or one specific shielding pattern via the corresponding pin and the corresponding conductive trace of PCB to the device.