DATA TRANSFER CONTROL DEVICE AND ELECTRONIC DEVICE

PROBLEM TO BE SOLVED: To achieve a bus bridge function between an ATA and an SATA and also achieve proper data transfer for an ATAPI. SOLUTION: A data transfer control device includes a PATAI/F 10 connected to a PATA bus, an SATAI/F 50 connected to an SATA bus, and a sequence controller 30 for performing transfer sequence control. A host 2 issues an ATA packet command such that DMA bits are in DMA settings. When an ATAPI packet command is issued such that a command packet is set in data register, the PATAI/F 10 transfers DMA data to and from the host 2, and the SATAI/F 50 transfers PIO data to and from a device 4. COPYRIGHT: (C)2009,JPO&INPIT