In an integrated circuit, a first delay locked loop circuit is configured to adjust a phase of a first clock signal input to a first clock input terminal, and to at least one of transmit and receive information based on the phase-adjusted first clock signal. A second delay locked loop circuit is configured to adjust a phase of a second clock signal input to a second clock input terminal, and to at least one of transmit and receive information based on the phase-adjusted second clock signal. A path selection circuit is configured to select, in response to a select signal, one of a first signal path through the first delay locked loop circuit and a second signal path through the second delay locked loop circuit as a signal path for at least one of transmitting and receiving the information.