General Description

SN11083 is a high-performance integrated circuit to bridge USB 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. To help the system manufacturers to build high quality, low cost USB storage systems, several special features are implemented. The embedded translation table helps the system makers to design a high performance NAND type flash device but still keeps the cost low. The proprietary randomization algorithm effectively extends the lifetime of the flash memory, ensuring the robustness of the system. The real time ECC correction keeps the data integrity while still maintains the high data transfer rate.

Features

● 12 MHz 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

● 12 characters of serial number and up to 28 characters of Vendor/Product/Revision supported with external EEPROM

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

● Real-time ECC correction circuit to ensure the data integrity and accelerate the access speed for NAND-type flash.

● Built-in SRAM to support logical-to-physical address translation for NAND-type flash to reduce cost and increase performance and reliability

● Built-in FIFO for upstream and downstream data transfer

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

● LED lightening pin available.

● PC boot up capability provided (PC BIOS needs to support USB ZIP boot up) (version 2 only)

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

● Driver support Microsoft Windows 98

● Single 3.3V operation

● 48 pin LQFP package.