AK5371VQ Asahi Kasei Microsystems, AK5371VQ Datasheet - Page 23

• Manufacturer Part Number: AK5371VQ
• Description: 2CH A/D CONVERTER WITH USB I/F
• Manufacturer: Asahi Kasei Microsystems

MS0103-E-00
4 Standard requests
4.1 Clear Feature
The AK5371 accepts “Clear Feature” request without stall. Though this request does not influence to the
operation of the device, the AK5371 does not support this request.
4.2 Get Configuration
Offset
0
1
2
4
6
4.3 Get Descriptor
Offset
0
1
2
4
6
4.4 Get Interface
Offset
0
1
2
4
6
The AK5371 returns Configuration value.
The AK5371 returns the current bAlternateSetting value.
ASAHI KASEI
MS0103-E-00
Field
bmRequestType
bRequest
wValue
wIndex
wLength
Field
bmRequestType
bRequest
wValue
wIndex
wLength
Field
bmRequestType
bRequest
wValue
wIndex
wLength
Size
Size
Size
1
1
2
2
2
1
1
2
2
2
1
1
2
2
2
0x08
0x06
0x0A
Value
0x80
0x0000
0x0000
0x0001
Value
0x80
0xZZZZ
0x0000
0xZZZZ
Value
0x81
0x0000
0x0000
0x0001
0x0001
GET_CONFIGURATION
AKM USB Mic. has one configuration.
GET_DESCRIPTOR
ZERO
AKM USB Mic. Has zero bandwidth Audio
Description
Description
ZZZZ is assigned by host:
High Byte is Descriptor Type, Low Byte is Index.
DEVICE : 0x0100 : (Index is 0 only)
CONFIGURATION : 0x0200
STRING: 0x03??(?? is 00, 01, 02)
if wValue is DEVICE or CONFIGURATION, wIndex is
zero. If wValue is 0x0300(LANGID), wIndex is zero.
If wValue is 0x0301 or 0x0302, wIndex is
0x0409“English(US)”.
Descriptor Length (ZZZZ is assigned by host)
Description
GET_INTERFACE
Audio Control Interface
Audio Streaming Interface
Streaming Interface and normal Audio Streaming
Interface.
23
[AK5371]
2001/06