AK4571 Datasheet, PDF (46/54 Pages) Asahi Kasei Microsystems – USB I/F Audio CODEC

ASAHI KASEI
[AK4571]
5.3.3. Volume Control
Offset
0
1
2
4
Field
Size
bmRequestType 1
bRequest
1
wValue
2
wIndex
2
Value
0xA1
0x81
0x82
0x83
0x84
0x0200
0x0201
0x0202
0x0 500
0x0 600
0x0800
6
wLength
2
0x0002
Description
GET_CUR
GET_MIN
GET_MAX
GET_RES
VOLUME_CONTROL | Master CH (FU5, FU6)
VOLUME_CONTROL | CHANNEL_1 (FU8)
VOLUME_CONTROL | CHANNEL_2 (FU8)
MIC Recording Volume
MIC Playback Volume
Lineout Volume
Lower Byte: Audio Control Interface(0x00)
Volume Control
(2
bRequest
0x81
0x81
0x81
0x81
0x82
0x82
0x82
0x82
0x83
0x83
0x83
0x83
0x84
0x84
0x84
0x84
: wVolume
wValue
0x0200
0x0200
0x0201
0x0202
0x0200
0x0200
0x0201
0x0202
0x0200
0x0200
0x0201
0x0202
0x0200
0x0200
0x0201
0x0202
)
wIndex
0x0500
0x0600
0x0800
0x0800
0x0500
0x0600
0x0800
0x0800
0x0500
0x0600
0x0800
0x0800
0x0500
0x0600
0x0800
0x0800
wVolume(2
0xZZZZ
0xZZZZ
0xZZZZ
0xZZZZ
0xE100
0xE100
0xD100
0xD100
0x1800
0x1800
0x0000
0x0000
0x0100
0x0100
0x0100
0x0100
Stall
) Desciptorn
MIC
MIC
Line
Line
MIC Volume
MIC Volume
Line Out Volume
Line Out Volume
MIC Volume
MIC Volume
Line Out Volume
Line Out Volume
MIC Volume
MIC Volume
LineOut Volume
LineOut Volume
Volume
Volume
Lch Volume
Rch Volume
-31dB
-31dB
-47dB
-47dB
+24dB
+24dB
0dB
0dB
1dB
1dB
1dB
1dB
ADC,DAC 0dB(0x0000)
MS0153-J-02
- 46 -
2003/3