SN11087

2003/7/8 ver 0.3

2

exist. The customers can select any one of them during the mass production stage, making

production much easier.

With these flexibilities, the manufacturers can easily build

different products by using exactly the same components. The only place needs to be

changed on PCB is pin 35.

The USB Mass Storage Class compliance capability of SN11087 makes it a truly

“plug-and-play” device without vendor drivers under Windows 2000/ME/XP and Mac OS

9/10. SN11087 also provides PC boot up and data security function that exact the same as a

floppy disk (1.44M), which makes it an ideal replacement for the legacy floppy disk.

2 Features

USB 1.1 12 MHz 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

Low system clock (6MHz) to reduce EMI

Customized VID, PID, serial number, and 28 characters of Vendor/Product/Revision

string supported within flash or external EEPROM.

EEPROM in system programmable (ISP) capability

Support Samsung and Toshiba NAND-type flash memory, from 32Mbits to 1Gbits

Support new type of Samsung NAND type flash memory, from 1Gbits to 4Gbits

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

acceleration

Embedded SRAM for logical-to-physical address translation to extend the life time of

NAND-type flash

Support up to 8 NAND type flash memories are supported

Support up to 2 Gbytes of disk capacity

Embedded FIFO for upstream and downstream data transfer

Built-in power MOS to meet USB suspend requirement (500 uA)

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

LED indicator pin

Three modes of LED flashing patterns can be selected

Five speed of LED flashing speed provided