BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING [0013]FIGS. 1A and 1B show examples of the configuration of an electronic instrument in accordance with one embodiment of the present invention. [0014]FIGS. 2A, 2B, 2C, and 2D are illustrative of isochronous transfer and asynchronous transfer. [0015]FIG. 3 shows the configuration of the data transfer control device in accordance with one embodi