alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 16

• Manufacturer Part Number: alc850
• Description: Eight Channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

7.
7.1. Mixer Registers
Accessing odd numbered registers, or reading unimplemented registers, will return a 0.
Eight Channel AC’97 2.3 Audio Codec
X = Reserved bit
*: MX36 is the master volume control of CENTER/LFE output.
(hex)
Reg.
0Ah
0Ch
0Eh
1Ah
1Ch
2Ah
2Ch
2Eh
3Ah
6Ah
7Ah
7Ch
7Eh
00h
02h
06h
10h
12h
16h
18h
20h
24h
26h
28h
30h
32h
36h
38h
64h
66h
MX38 is the master volume control of surround output.
Center/LFE
Line-In Vol Mute
channel Ctl
Vendor ID1
Vendor ID2
Record Sel
S/PDIF Ctl
Master Vol Mute
Surr. DAC
Mono Vol
BEEP Vol
Phone Vol
Rec. Gain
Audio Int.
CEN/LFE
Extension
PCM Out
PCM Out
PCM Out
Register Descriptions
PCM Vol
& Paging
Extended
Extended
Surround
MIC Vol
Aux Vol
General
PCM In
Volume
Volume
Volume
Volume
Control
Name
CD Vol
Power
Down
Multi-
Status
Reset
DAC
Rate
Rate
Rate
Rate
EAPD
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
D15
I4
X
X
X
V
0
0
1
1
1
1
0
0
0
0
D14 D13 D12 D11 D10 D9
PRL
I3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
0
1
1
SPSR
PRK
PR5
I2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
1
1
1
1
0
0
0
0
LSR4 LSR3 LSR2 LSR1 LSR0 Mute
SPSR
LSD4 LSD3 LSD2 LSD1 LSD0
LFE4 LFE3 LFE2 LFE1 LFE0 Mute
ML4 ML3 ML2 ML1 ML0 Mute*
NL4
CL4
AL4
LD4
PL4
PR4
PRJ
F7
I1
X
X
X
X
X
X
X
0
1
1
1
1
0
0
0
0
0
LRG3 LRG2 LRG1 LRG0
REV1 REV0
NL3 NL2 NL1 NL0
CL3
AL3 AL2 AL1 AL0
LD3 LD2 LD1 LD0
PL3
PR3
PRI SPCV SBDA
F6
I0
X
X
X
X
X
0
1
1
1
1
L
0
0
0
0
Table 5. Mixer Registers
LRS2 LRS1 LRS0
CL2
PR2
CC6 CC5 CC4 CC3 CC2 CC1 CC0 PRE COPY /AUDI
PL2
F5
X
X
X
X
X
0
0
0
0
0
0
0
0
1
MIX
CL1
PR1
PL1
F4
X
X
X
X
C
0
0
1
1
1
1
0
0
0
1
LDAC SDAC CDAC
LDAC SDAC CDAC SPSA
CL0
PL0
PR0
8
D8
MS
F3
X
X
X
X
0
1
1
1
1
0
0
1
1
LBK
D7
F2
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
1
1
1
0
0
0
0
20dB
D6
F1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
1
1
D5
F0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
0
0
0
0
0
0
1
SPSA
CNT4 CNT3 CNT2 CNT1 CNT0
RSR4 RSR3 RSR2 RSR1 RSR0
RSD4 RSD3 RSD2 RSD1 RSD0
MM4 MM3 MM2 MM1 MM0
MR4 MR3 MR2 MR1
NR4 NR3 NR2 NR1
CR4 CR3 CR2 CR1
AR4 AR3 AR2 AR1
CD4 CD3 CD2 CD1
PB3
PH4
MI4
PR4
D4
X
X
X
X
X
X
0
0
0
0
0
0
0
0
0
0
RRG3 RRG2 RRG1 RRG0
Track ID: JATR-1076-21 Rev. 1.4
PH3
PG3
REF ANL DAC
PB2
MI3
PR3
D3
X
X
X
X
0
0
0
0
0
0
0
1
0
SPDIF
SPDIF
RRS2 RRS1 RRS0
PB1
PH2
MI2
PR2
PG2
D2
X
0
0
0
0
0
0
0
1
0
PB0
PH1
MI1
PR1
PG1
D1
X
X
X
O
0
0
0
0
0
0
0
0
0
MR0
ADC
VRA
VRA
NR0
CR0
AR0
PRO
CD0
PH0
MI0
PR0
PG0
D0
X
X
0
0
0
0
0
0
0
0
0
Datasheet
ALC850
Default
BB80h
BB80h
BB80h
BB80h
60A2h
09C4h
414Ch
0000h
8000h
8000h
8000h
8008h
8008h
8808h
8808h
8808h
8808h
0000h
8000h
0000h
0000h
000Fh
0040h
8080h
8080h
2000h
0808h
0808h
0000h
4760h