STAC9766 IDT [Integrated Device Technology], STAC9766 Datasheet - Page 51

• Manufacturer Part Number: STAC9766
• Manufacturer: IDT [Integrated Device Technology]

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
8.1.7.
8.1.8.
RESERVED
Bit(s) Reset Value
Bit(s)
14:13
14:7
12:8
4:0
15
15
6
5
Mute
Mute
D15
D15
D7
D7
Stereo or Mic Volume (Index 0Eh)
To enable Stereo Mic, Register 78h (unlocked), bit D6 must be enabled.
In Stereo mode, the left and right volume are controlled by GN4:GN0.
Default: 8008h.
LineIn Volume (Index 10h)
Default: 8808h.
Reset Value
1
0
0
0
0
RESERVED
1
0
0
BOOSTEN
D14
D14
D6
D6
RESERVED
RESERVED
RESERVED
RESERVED
BOOSTEN
GN<4:0>
GL<4:0>
Name
RESERVED
Mute
Name
Mute
D13
D13
D5
D5
0 = no mute
1 = mute phone
Bit not used, should read back 0
Works with MICGAINVAL (Register 6Eh Bit D2)
BOOSTEN
Phone Volume Control
00000 =
00001 = 10.5dB gain
.....
01000 =
.....
11111 = -34.5dB gain
0 = No mute
1 = Mute linein
Bit not used, should read back 0
Left LineIn Volume Control
00000 =
00001 = 10.5dB gain
.....
01000 =
.....
11111 = -34.5dB gain
0
0
1
1
GN4
GR4
GL4
D12
D12
51
D4
D4
12dB gain
12dB gain
0dB gain
0dB gain
MICGAINVAL
RESERVED
GN3
GR3
D11
D11
GL3
D3
D3
0
1
0
1
Description
Description
=
STAC9766/9767
=
=
=
=
GN2
GR2
D10
D10
GL2
D2
D2
Mic Gain Boost
10 dB
20 dB
30 dB
0 dB
GN1
GR1
GL1
D9
D1
D9
D1
PC AUDIO
GN0
GR0
GR0
V 7.4 12/06
D8
D0
D8
D0