A system for camera serial interface lane implementation between camera sensor and host processor is disclosed. An input data receiving unit receives first input signal from a first camera sensor in at least one of a two-lane camera serial interface configuration (CSI) or a four-lane CSI configuration; receives second input signal from a second camera sensor in the two-lane CSI. A data selector device selecting a first port for forwarding input signal when the first input signal is received in the two-lane CSI, selecting a second port for forwarding the input signal when the first input signal is obtained in the four-lane CSI configuration. A host processor block including a first receiver block to generate a first output signal when the first input signal is received from the first port, a second receiver block generates a second output signal when the first input signal is obtained from the second port.