Interface Descriptor for Communication Class Interface
| Offset | Field | Size | Value | Description |
|---|---|---|---|---|
1 |
bDescriptorType |
1 |
0x04 |
INTERFACE descriptor |
2 |
bInterfaceNumber |
1 |
0x00 |
Index of this interface |
3 |
bAlternateSetting |
1 |
0x00 |
Index of this setting |
4 |
bNumEndpoints |
1 |
0x01 |
1 endpoint |
5 |
bInterfaceClass |
1 |
0x02 |
Communication Class |
6 |
bInterfaceSubclass |
1 |
0x02 |
Abstract Control Model |
7 |
bInterfaceProtocol |
1 |
0xFF |
Vendor-specific protocol |
8 |
iInterface |
1 |
0x00 |
Unused |