AK5373 AKM [Asahi Kasei Microsystems], AK5373 Datasheet - Page 34

• Manufacturer Part Number: AK5373
• Description: 24-bit Stereo ADC with USB Interface
• Manufacturer: AKM [Asahi Kasei Microsystems]

4.4 Operational Alternate Setting 3
4.4.1 Standard Audio Streaming Interface Descriptor (Alt = 3: Mono, 24bit, 32k/44.1k/48k)
4.4.2 Class-specific Audio General Interface Descriptor
4.4.3 Type I Format Type Descriptor
4.4.4 Standard Endpoint Descriptor
MS1202-E-00
Offset
Offset
Offset
Offset
14
11
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
0
1
2
3
4
5
6
7
8
0
1
2
3
4
6
7
8
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubclass
bInterfaceProtocol
iInterface
bLength
bDescriptorType
bDescriptorSubtype
bTerminalLink
bDelay
wFormatTag
bLength
bDescriptorType
bDescriptorSubtype
bFormatType
bNrChannels
bSubFrameSize
bBitResolution
bSamFreqType
tSamFreq[0]
tSamFreq[1]
tSamFreq[2]
bLength
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize
bInterval
bRefresh
bSynchAddress
Field
Field
Field
Field
Size
Size
Size
Size
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
3
3
3
1
1
1
1
2
1
1
1
0x09
0x04
0x01
0x03
0x01
0x01
0x02
0x00
0x00
0x07
0x24
0x01
0x02
0x01
0x0001
0x11
0x24
0x02
0x01
0x01
0x03
0x18
0x03
0x007D00
0x00AC44
0x00BB80
0x09
0x05
0x81
0x0D
0x0090
0x01
0x00
0x00
Value
Value
Value
Value
- 34 -
Size of this descriptor in bytes
INTERFACE descriptor
Index of this interface
Index of this setting
Endpoint 1
AUDIO
AUDIO_STREAMING
Not used. Must be set to 0.
Null string
Size of this descriptor in bytes
CS_INTERFACE descriptor
AS_GENERAL
Unit ID of terminal (Output Terminal ID)
Interface delay
PCM
Size of this descriptor in bytes
ENDPOINT descriptor
Endpoint 1, IN direction
Isochronous, synchronous, not shared
3byte*48sample*1ch=144 byte/frame
One packet every frame (Must be set to 1)
Size of this descriptor in bytes
CS_INTERFACE
FORMAT_TYPE
FORMAT_TYPE_I
One channel
Three bytes per slot
24 bits
Three frequencies
32000Hz
44100Hz
48000Hz
Description
Description
Description
Description
[AK5373]
2010/06