General Description

SN11085 is a high-performance integrated circuit to bridge USB 1.1 interface and Flash memory. It provides a flexible and cost efficient single chip solution for external storage applications that intend to utilize the convenience of USB. Several special features are implemented for an efficient and low cost USB storage device solution. The embedded translation table eliminates external SRAM cost. The Sonix proprietary randomization algorithm effectively extends the lifetime of flash memory and ensures the product robustness. Embedded real time ECC correction keeps the data integrity while maintains the high data transfer rate.

Features

● USB 1.1 full-speed compatible

● USB 1.1 Mass Storage Class compliant

● USB Mass Storage Class Bulk-Only Transport 1.0 supported

● USB Mass Storage Class SCSI transparent command set supported

● Customized VID, PID, serial number, and 28 characters of Vendor/Product/Revision string supported with external EEPROM

● EEPROM in system programmable (ISP) capability

● 28 characters of Vendor/Product/Revision string can be stored in flash for external EEPROM cost reduction

● Support Samsung and Toshiba NAND-type flash memory, from 4Mbytes to 128 Mbytes

● Real-time ECC correction circuit for data integrity and memory access speed acceleration

● Embedded SRAM for logical-to-physical address translation of NAND-type flash

● Up to 8 NAND type flash memories are supported

● Embedded FIFO for upstream and downstream data transfer

● Data transfer rate up to 1.5 MB/s (burst), 1.1 MB/s (read average),

● LED indicator pin

● PC boot up capability (host BIOS with USB ZIP boot up support is necessary)

● Flash disk security function provided, up to 12 characters of password for high sensitive data protection from illegally access

● ROM-type flash disk capability provided (permanent write protect)

● No Driver needed under Microsoft Windows ME/2000/XP, Mac OS 8.6/9.x/10.x

● Sonix Driver for Microsoft Windows 98

● Single 3.3V operation

● 48 pin LQFP package