Data transfer control device, electronic equipment, and data transfer control method

摘要

A data transfer control device including a buffer is provided which includes an EP 2 area (a data storage area set to FIFO) and a CSW area (a randomly accessible status storage area), when data and a CSW are allocated as information to be transferred through one end point EP 2. When a phase has switched from a USE data phase (data transport) to a status phase (status transport), the information read area is switched from the EP 2 area to the CSW area. and IN data to be transferred from the end point EP 2 to a host is read from the CSW area. A CSW 0 area for success status and a CSW 1 area for non-success status are provided, and a status block packet in which is set either success or non-success default information is previously written therein.