ISD-200 Datasheet, PDF (26/64 Pages) List of Unclassifed Manufacturers – USB Mass Storage Class Bulk-Only Specification Compliant

ISD-200 ASIC Datasheet
There is an additional string, index 6, that is not referenced by standard descriptors. Index 6
contains the ISD-200 Hardware Revision string.
The following table shows how the LANGID, manufacturer, and product strings are formatted in
the on-board ROM contents, and this can be considered an example of how to format strings in a
serial ROM or in FBh data. Each string character is comprised of an ASCII character appended to
a NULL byte to meet the UNICODE encoding requirements as specified in The Unicode
Standard, Worldwide Character Encoding, Version 1.0, Volumes 1 and 2.
Address
Field Name
0x50
0x51
0x52
0x53
bLength
bDescriptorType
LANGID (LSB)
LANGID (MSB)
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
0x5C
0x5D
0x5E
0x5F
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
0x69
0x6A
0x6B
0x6C
0x6D
0x6E
0x6F
0x70
0x71
0x72
0x73
0x74
0x75
bLength
bDescriptorType
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
bString
Description
USB String Descriptor - Index 0 (LANGID)
LANGID string descriptor length in bytes.
Descriptor type.
Language supported.
Note: See LANGID table in Microsoft documentation (the code for English
is 0x0409)
USB String Descriptor - Index 1 (Manufacturer)
String descriptor length in bytes (restricted to 63 bytes or less).
Descriptor type.
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
ASCII character.
(“NUL”)
USB String Descriptor - Index 2 (Product)
On-board
Defaults
0x04
0x03
0x09
0x04
0x22
0x03
0x49 (“I”)
0x00
0x6E (“n”)
0x00
0x2D (“-“)
0x00
0x53 (“S”)
0x00
0x79 (“y”)
0x00
0x73 (“s”)
0x00
0x74 (“t”)
0x00
0x65 (“e”)
0x00
0x6D (“m”)
0x00
0x20 (“ “)
0x00
0x44 (“D”)
0x00
0x65 (“e”)
0x00
0x73 (“s”)
0x00
0x69 (“i”)
0x00
0x67 (“g”)
0x00
0x6E (“n”)
0x00
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In-System Design Confidential