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SN11083
2002/6/26 0.2
Confidential
USB to Flash Interface Controller, Mass Storage Class Compliant
1 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. The external serial EEPROM provides the possibility to customize the USB identity for each product. The OEM makers could make products for different customers by just putting the vendor/product ID and names in the EEPROM but still keep other things the same. The serial number can help the system manufacturers to track down every single device they made even when the design and the PID/VID are all the same. The USB Mass Storage Class compliance capability of SN11083 makes it a truly "plug-and-play" device without vendor drivers needed under the OS like Windows 2000/ME/XP and Mac OS 9/10. This feature not only makes the system developing faster and easier, but also reduces the cost and increases the reliability. The SN11083 also provides the capability to boot the PC. Therefore, the system manufacturers can use it to build a much faster, high capacity, reliable, and portable system to replace the legacy floppy disk easily. With so many functions built- in and the high performance, easy to design- in architecture, SN11083 is an ideal choice for building a portable USB to Flash storage system.
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SN11083
2002/6/26 0.2
Confidential
2 Features
l l l l l l l l l l l l l l l l 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.
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SN11083
2002/6/26 0.2
Confidential
3 Pin Assignment
Pin# PAD Name Type Drive Special Description 1 GND 2 FLD6 3 FLD2 4 FLD7 5 FLD1 6 FLD0 7 FLWP 8 FLRB 9 FLWE 10 FLRE 11 FLALE 12 GND 13 VDD 14 FLCLE 15 FLCE 16 NC 17 NC 18 NC 19 LED 20 RSTN 21 TEST 22 NC 23 XIN 24 XOUT 25 NC 26 NC 28 GPIO0 DO 8mA PD DI DI I O DIO 8mA PU PD PWR DIO 8mA PD DIO 8mA PD DIO 8mA PD DIO 8mA PD DIO 8mA PD DO 8mA DI DIO 8mA PD DIO 8mA PD DO 8mA PWR PWR DO 8mA DO 8mA Digital ground Flash data bit 6 Flash data bit 2 Flash data bit 7 Flash data bit 1 Flash data bit 0 Flash write protect Flash ready/busy Flash write enable Flash read enable Flash address latch enable Digital ground Digital 3.3V Flash command latch enable Flash chip enable Not Connected Not Connected Not Connected LED lighter Chip reset Test pin No Connect Crystal input or oscillator input Crystal output or no connection No Connect No Connect Flash power control General Purpose Input/Output 0
3
27 FLPOWER DO 8mA OC
SN11083
2002/6/26 0.2 29 ROMCS 30 GND 31 VDD 32 ROMSK 33 ROMDI 34 ROMDO 35 NC DIO 4mA PWR PWR DIO 4mA DIO 4mA DIO 4mA PU
Confidential
Chip select for external EEPROM Digital ground Digital 3.3V Clock for external serial EEPROM Serial data to external EEPROM Serial data from external EEPROM No Connect Flash write protect switch analog 3.3V analog ground USB D+ signal USB D- signal Not Connected Not Connected Not Connected Not Connected
36 FLWPSW DI 37 AVDD 38 AVSS 39 DPLUS 40 DMINUS 41 NC 42 NC 43 NC 44 NC 45 FLD4 46 FLD5 47 FLD3 48 VDD PWR PWR AIO AIO -
DIO 8mA PD DIO 8mA PD DIO 8mA PD P -
Flash data bit 4 Flash data bit 5 Flash data bit 3 Digital 3.3V
P: power pin; AI: analog input pin, AIO: analog input/output pin; DI: digital input pin; DO: digital output pin; DIO: digital input/output pin.

TTL: TTL compatible input pin; PD: pull down; PU: pull up. All pads are Schmitt triggered and with slew rate control
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SN11083
2002/6/26 0.2
Confidential
4 Package diagram
LQPF 48 Package F L W P SN WC RRR RG OOO OP MMMV G MI DDS DNCO OI KDDS0 F LF PL OW WP ESN R WC
36 35 34 33 32 31 30 29 28 27 26 25 AD VD A SS V DS PLU D IN S MU N C N C N C N C FLD 4 FLD 5 FLD 3 VD D 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 GF F F NLLL DDDD 627 F L D 1 F L D 0 FF LL WR PB FF LL WR EE FG LN AD L E 24 23 22 21 20 19 18 17 16 15 14 13 XU OT X IN N C T EST RN ST L ED N C N C N C FLC E FL LE C VD D
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SN11083
2002/6/26 0.2
Confidential
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SN11083
2002/6/26 0.2
Confidential
5 Version Control
Draft 0.1 0.2 May-20-2002 June-17-2002 June-25-2002
add new feature of version 002
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