Interface apparatus for connecting a device and a host system, and method of controlling the interface apparatus

摘要

According to one embodiment, a serial ATA interface apparatus having an S-ATA bridge. The S-ATA bridge is to be connected to a host system by a serial ATA bus. The S-ATA bridge has a shadow register and a buffer memory. The shadow register stores commands. The buffer memory can access a HDC. The S-ATA bridge finishes processing the commands before it outputs a response signal to the host system.