SN11012 Datasheet, PDF (1/7 Pages) SONiX Technology Company – USB to SM/Flash Interface Controller, Mass Storage Class Compliant

2002/6/26
0.2
SN11012
Confidential
USB to SM/Flash Interface Controller, Mass
Storage Class Compliant
1 General Description
SN11012 is a high-performance integrated circuit to bridge USB and SM/Flash
compliance devices. 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. SN11012 can be easily configured to access SM
and/or NAND type flash devices. With supporting flash memory capability, the
combo system which supports both card reader and thumb drive can be built without
any special effort. The embedded translation table help the system makers to design a
high performance SM card or NAND type flash accessing device but still keeps the
cost low. The proprietary randomization algorithm effectively extends the lifetime of
the SM card and 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 SN11012 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 SN11012 even 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.
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