AK5371AVQ AKM [Asahi Kasei Microsystems], AK5371AVQ Datasheet - Page 16

• Manufacturer Part Number: AK5371AVQ
• Description: 2ch A/D Converter with USB I/F
• Manufacturer: AKM [Asahi Kasei Microsystems]

MS0546-E-00
3.2 Class-specific Audio Control Interface
3.3 Class-specific Audio Control Interface Header Descriptor
3.3.1
Offset
3.3.2
This descriptor describes the signal coming through the input port NumChannels is 1(monaural) and
ChannelConfig is set no position. Terminal type is Microphone.
Offset
3.3.3
This descriptor describes the USB stream to host.
Offset
3.3.4
Offset
10
11
ASAHI KASEI
0
1
2
3
5
7
8
0
1
2
3
4
6
7
8
0
1
2
3
4
6
7
8
0
1
2
3
4
5
6
7
8
9
MS0103-E-00
Contains general information about the audio device.
Input terminal descriptor
Output terminal descriptor
Feature Unit descriptor
Field
Field
Field
Field
bLength
bDescriptorType
bDescriptorSubtype
bcdADC
wTotalLength
bInCollection
baInterfaceNr(1)
bLength
bDescriptorType
bDescriptorSubtype
bTerminalID
wTerminalType
bAssocTerminal
bNrChannels
wChannelConfig
iChannelNames
iTerminal
bLength
bDescriptorType
bDescriptorSubtype
bTerminalID
wTerminalType
bAssocTerminal
bSourceID
iTerminal
bLength
bDescriptorType
bDescriptorSubtype
bUnitID
bSourceID
bControlSize
bmaControls(0)
bmaControls(1)
bmaControls(2)
iFeature
Note that there is never endpoint descriptor for endpoint 0.
Size
Size
Size
Size
1
1
1
2
2
1
1
1
1
1
1
2
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Value
0x09
0x24
0x01
0x0100
0x0028
0x01
0x01
Value
0x0C
0x24
0x02
0x01
0x0201
0x02
0x02
0x0003
0x00
0x00
Value
0x09
0x24
0x03
0x02
0x0101
0x01
0x03
0x00
Value
0x0A
0x24
0x06
0x03
0x01
0x01
0x01
0x02
0x02
0x00
16
Description
Size of this descriptor
CS_INTERFACE
HEADER subtype
Revision of class specification – 1.0
Total size of class-specific Audio Control
Interface
descriptor)
Number of streaming interfaces
Streaming interface number 1 belongs to
this audio control interface.
Description
Size of this descriptor
CS_INTERFACE
INPUT_TERMINAL subtype
ID of this terminal
Terminal is Microphone
ID of associated Output Terminal is 0x02
Two channels (Stereo)
Left/Right Front
Unused
Unused
Description
Size of this descriptor
CS_INTERFACE
OUTPUT_TERMINAL subtype
ID of this terminal
USB Streamer
ID of associate Input Terminal is 0x01
From Feature Unit
Unused
Description
Size of this descriptor
CS_INTERFACE
FEATURE_UNIT descriptor subtype
ID of this feature Unit
ID to Terminal to which this is connected.
Size in bytes of an element of the
bmaControl()
D0(Mute) is enable for Channel 0
D1(Volume) is enable for ch 1(Left)
D1(Volume) is enable for ch 2 (Right)
Unused
descriptors
(includes
this
[AK5371A]
2007/02