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Table 5.2.3-2 Configuration Descriptor
Byte
1
1
2
Item
bLength
bDescriptorType
wTotalLength
Description
Descriptor size (09h)
Descriptor type (configuration: 02h)
Descriptor size returned for this configuration
09h
02h
22h
Value
(Total size including configuration, interface, HID class, and
endpoint descriptor)
00h
1
1
bNumInterfaces
bConfigurationValue
Number of interfaces supported
Parameter to pass to Set_Configuration, which is used to select
01h
01h
this descriptor
1
1
1
iConfiguration
bmAttributes
bMaxPower
Index of a string descriptor that represents this configuration
Device power supply (08h: use bus power)
Max. bus current consumption (32h: 100 mA)
00h
80h
32h
Table 5.2.3-3 Interface Descriptor
Byte
1
1
1
Item
bLength
bDescriptorType
bInterfaceNumber
Description
Descriptor size (09h)
Descriptor type (interface: 04h)
0-based index value used to identify the interface supported by this
09h
04h
00h
Value
configuration
1
1
1
1
1
1
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Value used to select an alternate setting for the interface
Number of endpoints used by this interface
Class code (03h: HID class)
Subclass code (01h: supports boot protocol)
Protocol code (02h: mouse)
Index of a string descriptor that represents this interface
00h
01h
03h
01h
02h
00h
76
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