SN11085 データシートの表示（PDF） - Sonix Technology Co., Ltd
部品番号
コンポーネント説明
メーカー
SN11085 Datasheet PDF : 16 Pages
| |||
SN11085
2002/12/01 ver 0.97
them with concatenated ascending order from FLCE1 to FLCE8. There is no special
rule for the number of flash memory. (e.g. not necessarily to be the multiples of 2 or
4).
5.2 EEPROM format
An optional 93C46 EEPROM can be connected to SN11085 to override the default
USB vendor ID and product ID. In addition, strings for vendor name and product
name; and serial number (defined in mass storage device class) can be customized
with this EEPROM content. It should be noted that the VID and PID values cannot be
set to 0x0000 or 0xFFFF.
If 93C46 EEPROM is not detected by SN11085 after power on, default USB vendor
ID (hex 0C45) and product ID (hex 1060) are returned to the host. In such case,
ROMDO must be pulled high. (ROMDO pull high – no serial number, PID = hex
1060; ROMDO pulled low – with serial number, PID = hex 1030, default serial
number = 0). Default string will be returned unless this information is replaced by the
setting in flash memory. Writing string into the flash memory space is done by Sonix
mass production tool software.
Table 2 EEPROM data format
Address Field
length Value
Offset
Description
0
VID
Word
By customer USB Vendor ID
1
PID
Word
By customer USB Product ID (all 0s or all 1s are not allowed)
2
Serial Number 1 ~ 4 Word
By customer USB Mass Storage Serial Number nibble 1 to 4
3
Serial Number 5 ~ 8 Word
By customer USB Mass Storage Serial Number nibble 5 to 8
4
Serial Number 9 ~ 12 Word
By customer USB Mass Storage Serial Number nibble 9 to 12
5 ~ 8 Vendor Name
8 bytes By customer The name of the manufacturer in ASCII format
9 ~ 16 Product Name
16 bytes By customer The name of the product in ASCII format
17 ~ 18 Firmware version 2 bytes By customer
The serial number format in the Mass Storage Class device descriptor is described in
section 5.1.1.1 of the spec. If an external EEPROM is used, the following table
7
Share Link: 