This part is a kind of semiconductor called OTI-002168.

Function of this product has USB 2.0 Flash Disk Controller.

Manufacturers : OTI

Image and pinout :

Some of the text within the PDF file :

OTi „ Ours Technology Inc. OTi-2168 USB 2.0 FLASH DISK CONTROLLER DESCRIPTION The flash disk controller (OTi-2168) is a USB2.0 mass storage class controller used to make a linear flash device array look likes a normal disk, hiding the flash related problems with erasing. The OTi-2168 is a controller with USB interface. The USB interface is for high speed operation (480Mb/s). It conforms to USB Specification, Version 2.0. The USB transceiver is embedded in this controller. With stable slew-rate control, the controller reduces EMI. The OTi-2168 has a Phase Lock Loop (PLL) embedded. The PLL provides all clocks needed in this controller. It needs an externally provided clock operating in 12MHz. The OTi-2168 can control up to 8 pieces of NAND flash memory. The flash capacity can be 32M bits [ ... ]

OTI-002168 PDF Datasheet Download