Summary
USB2.0 to ATA/ATAPI Bridge Controller
Description
The AU6391 is a single chip controller designed for bridgingg USB 2.0 to ATA/ATAPI bus interface. It is used as the primary controller of building an external USB 2.0 hard disk or CD/DVD drives.
Source title
AU6391 Datasheet(PDF) - List of Unclassifed Manufacturers