參數(shù)資料
型號: AK5371AVQ
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 2ch A/D Converter with USB I/F
中文描述: 2通道的A / D轉(zhuǎn)換器的USB我/女
文件頁數(shù): 23/32頁
文件大?。?/td> 317K
代理商: AK5371AVQ
23
MS0103-E-00
MS0546-E-00
ASAHI KASEI
[AK5371A]
2007/02
4
Standard requests
4.1
Clear Feature
The AK5371A accepts “Clear Feature” request without stall. Though this request does not influence to the
operation of the device, the AK5371A does not support this request.
4.2
Get Configuration
The AK5371A returns Configuration value.
Offset
0
bmRequestType
1
bRequest
2
wValue
4
wIndex
6
wLength
Field
Size
Value
Description
1
1
2
2
2
0x80
0x08
0x0000
0x0000
0x0001
GET_CONFIGURATION
AKM USB Mic. has one configuration.
4.3
Get Descriptor
Offset
Field
0
bmRequestType
1
bRequest
2
wValue
Size
1
1
2
Value
0x80
0x06
0xZZZZ
Description
GET_DESCRIPTOR
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)
4
wIndex
2
0x0000
6
wLength
2
0xZZZZ
4.4
Get Interface
The AK5371A returns the current bAlternateSetting value.
Offset
Field
Size
0
bmRequestType
1
bRequest
2
wValue
4
wIndex
Value
0x81
0x0A
0x0000
0x0000
0x0001
0x0001
Description
GET_INTERFACE
ZERO
Audio Control Interface
Audio Streaming Interface
AKM USB Mic. Has zero bandwidth Audio
Streaming Interface and normal Audio Streaming
Interface.
1
1
2
2
6
wLength
2
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