STAC9752A Datasheet, PDF (58/106 Pages) Integrated Device Technology – AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK

STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PC AUDIO
Bit(s) Reset Value
15
1
14:13
0
12:8
0
7:5
0
4:0
0
Name
Mute
Reserved
GL<4:0>
Reserved
GR<4:0>
Description
0 = no mute
1 = mute PCM out
Bit not used, should read back 0
Left PCM Volume Control
00000 = 12dB gain
00001 = 10.5dB gain
.....
01000 = 0dB gain
.....
11111 = -34.5dB gain
Bit not used, should read back 0
Right PCM Volume Control
00000 = 12dB gain
00001 = 10.5dB gain
.....
01000 = 0dB gain
.....
11111 = -34.5dB gain
7.1.13.
Record Select (1Ah)
Default: 0000h (corresponding to Mic in)
Used to select the record source independently for right and left.
D15
D14
D13
D12
D11
D10
D9
D8
Reserved
SL2
SL1
SL0
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
SR2
SR1
SR0
Bit(s) Reset Value
15:11
0
10:8
0
Name
Reserved
SL2:SL0
Description
Bits not used, should read back 0
Left Channel Input Select
000 = Mic
001 = CD In (left)
010 = Video In (left)
011 = Aux In (left)
100 = Line In (left)
101 = Stereo Mix (left)
110 = Mono Mix
111 = Phone
IDT™
58
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
V 1.5 1206