SN11087 Datasheet, PDF (8/14 Pages) SONiX Technology Company – Second Generation USB1.1 Flash Memory Controller

to be the multiples of 2 or 4).
SN11087
2003/7/8 ver 0.3
5.2 VID/PID/SN and Strings format
The default USB vendor ID, product ID and the strings for vendor name and product
name can be changed by storing customized values into the flash or EEPROM. The
serial number (defined in mass storage device class) can also be customized. It should
be noted that the VID and PID values cannot be set to 0x0000 or 0xFFFF. The default
vendor string of the SN11087 is “USB NAND”. The default product string is
“FLASH DISK”. Therefore, the Windows will show “USB NAND FLASH DISK”
when the default string is used.
Upon power up, if 93C46 EEPROM is not detected and the flash doesn’t have
VID/PID stored, default USB vendor ID (hex 0C45) and product ID (hex 1060) are
returned to the host. The ROMDO pin must be pulled high when no EEPROM exists.
The VID/PID/Serial number and vendor/product strings can be programmed through
the mass production software provided by Sonix.
The serial number format in the Mass Storage Class device descriptor is described in
section 5.1.1.1 of the spec. If the manufacturers needs to have serial number, then the
value of the highest two nibbles (nibble 1 and 2) of the serial number can not be 0xFF,
or the serial number feature will be disabled.
5.3 Software support
Sonix provides the following software to customers
1) Application software and driver for Win98/2000/Me/XP; boot up utility is
included for Win98/Me
2) Mass production tool which provides the following function
i) Flash memory format
ii) File copy/compare for data validation
iii) Copying files into the flash memory which are to be delivered with the
flash disk
iv) ISP of EEPROM (93C46)
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