An information processing apparatus includes a data transmitting apparatus that transmits data of an N-bit width; a data receiving apparatus that receives the data of the N-bit width from the data transmitting apparatus; and a data bus of the N-bit width connecting the data transmitting apparatus and the data receiving apparatus. The data transmitting apparatus includes a first error-detection-code-attached data generation circuit, a second error-detection-code-attached data generation circuit, a first degeneration correspondence register, and a transmission-side selection circuit. The data receiving apparatus includes a first error checking circuit, a second error checking circuit, and a second degeneration correspondence register.