Supporting USB - USB Mass Storage: Designing and Programming Devices and Embedded Hosts - page 36

Table 2-1: Example descriptors for a full-speed mass-storage device (Sheet 2 of
2).

0x00 Interface string index (no string defined)

Endpoint Descriptor
0x07 Descriptor size in bytes (7)

0x05 Descriptor type (ENDPOINT)

0x81 Endpoint number and direction (1 IN)

0x02 Transfer type (bulk)

0x0040 Maximum packet size (64)

0x00 Maximum latency

(doesn't apply to full-speed bulk endpoints)

Endpoint Descriptor
0x07 Descriptor size in bytes (7)

0x05 Descriptor type (ENDPOINT)

0x01 Endpoint number and direction (1 OUT)

0x02 Transfer type (bulk)

0x0040 Maximum packet size (64)

0x00 Maximum latency/high-speed OUT NAK rate

(doesn't apply to full-speed bulk endpoints)

String Descriptor 0 (Language ID)
0x04 Descriptor size in bytes (4)
0x03 Descriptor type (STRING)
0x0409 Language ID (U.S. English)
String Descriptor 1 (Manufacturer String)
0x34 Descriptor size in bytes (52)
0x03 Descriptor type (STRING)
“Microchip Technology Inc.” String contents, Unicode, 2 bytes per character
String Descriptor 2 (Product String)
0x3A Descriptor size in bytes (58)
0x03 Descriptor type (STRING)
“Microchip Mass Storage Drive” String contents, Unicode, 2 bytes per character
String Descriptor 3 (Serial Number)
0x1A Descriptor size in bytes (26)

0x03 Descriptor type (STRING)

“123456789ABC” String contents, Unicode, 2 bytes per character