AK4571 Datasheet, PDF (36/54 Pages) Asahi Kasei Microsystems – USB I/F Audio CODEC

ASAHI KASEI
3.6.
Interface #3 HID Class
3.6.1. Standard Interface Descriptor
Offset
0
1
2
3
4
5
6
7
8
Field
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubclass
bInterfaceProtocol
iInterface
Size
1
1
1
1
1
1
1
1
1
Value
0x09
0x04
0x03
0x00
0x01
0x03
0x00
0x00
0x00
3.6.2. HID Descriptor
Offset
0
1
2
4
5
6
7
Field
bLength
bDescriptorType
bcdHID
bCoundtryCode
bNumDescriptor
bDescriptorType
bDescriptorLength
Size
1
1
2
1
1
1
2
Value
0x09
0x21
0x0110
0x00
0x01
0x22
0x001f
3.6.3. Endpoint Descriptor
Offset Field
Size
0
bLength
1
1
bDescriptorType
1
2
bendpointAddress
1
3
bmAttributes
1
4
wMaxPacketSize
2
6
wInterval
1
Value
0x07
0x05
0x83
0x03
0x0001
0x40
Description
Size of this descriptor
INTERFACE descriptor
Index of this interface
Index of this setting
endpoint 1
HID
Non-Boot Device
Unused
null string
Description
Size of this descriptor
HID
HID spec rev #1.10
Report Descriptor
31 bytes
Description
Length of this descriptor
ENDPOINT descriptor
Endpoint 3, IN direction
Interrupt
64ms Interval
[AK4571]
MS0153-J-02
- 36 -
2003/3