STAC9766 Datasheet, PDF (50/97 Pages) Integrated Device Technology – 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
PC AUDIO
8.1.5. PC BEEP Volume (0Ah)
Default: 0000h
Additional information on the PC Beep can be found in Section 7.2: page44.
D15
D14
D13
D12
D11
D10
D9
D8
Mute
RESERVED
F7
F6
F5
F4
F3
D7
D6
D5
D4
D3
D2
D1
D0
F2
F1
F0
PV3
PV2
PV1
PV0
RSRVD
Bit(s) Reset Value
15
1
14:13
0
12:5
00h
4:1
0
0
0
Name
Mute
RESERVED
F[7:0]
PV(3:0)
RESERVED
Description
0 = No mute
1 = Mute PC BEEP
Bit not used, should read back 0
The Beep frequency is the result of dividing the 48KHz clock by 4 times
the number specified in F[7:0] allowing tones from 47Hz to 12KHz.
A value of 00h in bits F[7:0] disables internal PC BEEP generation and
enables external PC BEEP input if available.
PCBEEP Volume Control
0000 = 0dB attenuation
0001 = 3dB attenuation
.....
1111 = 45dB attenuation
Bit not used, should read back 0
8.1.6. Phone Volume (Index 0Ch)
Default: 8008h.
D15
D14
D13
Mute
D7
D6
D5
RESERVED
Bit(s) Reset Value
Name
15
1
Mute
14:5
0
RESERVED
4:0
0
GN<4:0>
D12
D4
GN4
D11
RESERVED
D3
GN3
D10
D2
GN2
Description
0 = No mute
1 = Mute phone
Bit not used, should read back 0
Phone Volume Control
00000 = 12dB gain
00001 = 10.5dB gain
.....
01000 = 0dB gain
.....
11111 = -34.5dB gain
D9
D1
GN1
D8
D0
GN0
IDT™
50
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06