參數(shù)資料
型號(hào)： AK5371
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 2CH A/D CONVERTER WITH USB I/F
中文描述： 2聲道的A / D轉(zhuǎn)換器的USB我/女
文件頁(yè)數(shù)： 16/32頁(yè)
文件大?。?/td> 256K
代理商： AK5371
16
MS0103-E-00
MS0103-E-00
ASAHI KASEI
[AK 5371]
2001/06
3.2
Class-specific Audio Control Interface
3.3
Class-specific Audio Control Interface Header Descriptor
3.3.1
Offset
F ield
Size
0
bLength
1
1
bDescriptorType
1
2
bDescriptorSubtype
1
3
bcdADC
2
5
wTotalLength
2
Value
0x09
0x24
0x01
0x0100
0x0028
Description
Size of this descriptor
CS_INTERFACE
HEADER subtype
Revision of class specification – 1.0
Total size of class-specific Audio Control
Interface
descriptors
descriptor)
Number of streaming interfaces
Streaming interface number 1 belongs to
this audio control interface.
Contains general information about the audio device.
(includes
this
7
8
bInCollection
baInterfaceNr(1)
1
1
0x01
0x01
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
F ield
Size
Value
0
bLength
1
0x0C
1
bDescriptorType
1
0x24
2
bDescriptorSubtype
1
0x02
3
bTerminalID
1
0x01
4
wTerminalType
2
0x0201
6
bAssocTerminal
1
0x02
7
bNrChannels
1
0x02
8
wChannelConfig
2
0x0003
10
iChannelNames
1
0x00
11
iTerminal
1
0x00
Input terminal descriptor
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
3.3.3
This descriptor describes the USB stream to host.
Offset
F ield
0
bLength
1
bDescriptorType
2
bDescriptorSubtype
3
bTerminalID
4
wTerminalType
6
bAssocTerminal
7
bSourceID
8
iTerminal
Output terminal descriptor
Size
Value
0x09
0x24
0x03
0x02
0x0101
0x01
0x03
0x00
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
1
1
1
1
2
1
1
1
3.3.4
F eature Unit descriptor
Offset
0
1
2
3
4
5
F ield
bLength
bDescriptorType
bDescriptorSubtype
bUnitID
bSourceID
bControlSize
Size
Value
0x0A
0x24
0x06
0x03
0x01
0x01
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
1
1
1
1
1
1
6
7
8
9
bmaControls(0)
bmaControls(1)
bmaControls(2)
iFeature
Note that there is never endpoint descriptor for endpoint 0.
1
1
1
1
0x01
0x02
0x02
0x00
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