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
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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
S N
W C
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M
D
O
R
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M
D
I
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M V
S D
K D
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C
S
G
P
I
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0
F
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R
F
L
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P
S N
W C
G
N
D
36 35 34 33 32 31 30 2 9 2 8 2 7 26 25
AVDD
AVSS
DPLUS
DMINUS
NC
NC
NC
NC
FLD4
FLD5
FLD3
VDD
37
38
39
40
41
42
43
44
45
46
47
48
1
G
N
D
2
F
L
D
6
3
F
L
D
2
4
F
L
D
7
5
F
L
D
1
6
F
L
D
0
7
F
L
W
P
8
F
L
R
B
9
F
L
W
E
1 0 11 12
F
L
R
E
F
L
A
L
E
G
N
D
24
23
22
21
20
19
18
17
16
15
14
13
XOUT
XIN
NC
TEST
RSTN
LED
NC
NC
NC
FLCE
FLCLE
VDD
5
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