AK4571 Datasheet, PDF (42/54 Pages) Asahi Kasei Microsystems – USB I/F Audio CODEC

ASAHI KASEI
[AK4571]
5. Device Specific Requests
AK4571
STALL
5.1.
Set Feature Unit Control Request
5.1.1. Mute Control
DAC
Offset Field
Size Value
0
bmRequestType 1
0x21
1
bRequest
1
0x01
2
wValue
2
0x0100
4
wIndex
6
wLength
2
0x0 500
0x0600
0x0800
2
0x0001
L/R
Description
SET_CUR
MUTE_CONTROL | CHANNEL_0
Mute for MIC Recording Volume
Mute for MIC Playback Volume
Mute for LineOut Volume
The Length of Mute Control Parameter Block
AK4571
Offset Field
0
bMute
Size
1
Value
0x01
0x00
Description
TRUE
FALSE
5.1.2. Bass Boost
Offset Field
0
bmRequestType
1
bRequest
2
wValue
4
wIndex
6
wLength
Size
1
1
2
2
2
Value
0x21
0x01
0x0 900
0x0 800
0x0001
Offset Field
0
bBassBoost
Size
1
Value
0x01
0x00
Description
SET_CUR
BASS_BOOST | CHANNEL_0
LineOut BASS BOOST
The Length of Mute Control Parameter Block
Description
TRUE
FALSE
MS0153-J-02
- 42 -
2003/3