AK4571 Datasheet, PDF (28/54 Pages) Asahi Kasei Microsystems – USB I/F Audio CODEC

ASAHI KASEI
3.3.5. Terminal Descriptor(ID=1)
Analog Microphone Input Terminal
Offset Fiel d
Size
0 Blength
1
1 bDescriptorType
1
2 bDescriptorSubtype 1
3 BterminalID
1
4 WTerminalType
2
6 BAssocTerminal
1
7 BNrChannels
1
8 WChannelConfig
2
10 IChannelNames
1
11 Iterminal
1
Value
0x0C
0x24
0x02
0x01
0x0201
0x0 2
0x01
0x000 0
0x00
0x00
3.3.6. Terminal Descriptor (ID=2)
A/D Output Terminal
Offset Field
Size Value
0 Blength
1 0x09
1 BdescriptorType
1 0x24
2 bdescriptorSubtype 1 0x03
3 BterminalID
1 0x02
4 WterminalType
2 0x0101
6 BassocTerminal
1 0x01
7 BsourceID
1 0x05
8 Iterminal
1 0x00
[AK4571]
Description
Size of this descriptor
CS_INTERFACE
INPUT_TERMINAL subtype
ID of this terminal
Terminal is Microphone
Associated with Output Terminal 0x02
One channel
Mono sets no position bit
Unused
Unused
Description
Size of this descriptor
CS_INTERFACE
OUTPUT_TERMINAL subtype
ID of this terminal
Terminal is USB streaming
Associate with Input Terminal is 0x01
From Feature Unit (ID5)
Unused
MS0153-J-02
- 28 -
2003/3