The MB86616 is the LSI for protocol conversion to connect SCSI devices to the IEEE 1394 bus. This LSI integrates a 1394 controller compliant with the IEEE Standard for High Performance Serial Bus (IEEE Std. 1394-1995, or FireWire standard) and an SCSI protocol controller compliant with the SCSI-Fast20 standard on a single chip. It also incorporates the F2MC-16F as a processor for controlling the individual on-chip controllers, providing ease of control.