alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 20

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

7.1.7.
Default: 8808H
Register 10H controls the LINE_IN input volume. Each step in bits 4:0 corresponds to a 1.5dB
increase/decrease in volume for the right channel, allowing 32 levels of volume, from 00000 to 11111.
Each step in bits 12:8 corresponds to a 1.5dB increase/decrease in volume for the left channel, allowing
32 levels of volume, from 00000 to 11111.
7.1.8.
Default: 8808H
Register 12H controls the CD input volume. Each step in bits 4:0 corresponds to a 1.5dB
increase/decrease in volume for the right channel, allowing 32 levels of volume, from 00000 to 11111.
Each step in bits 12:8 corresponds to a 1.5dB increase/decrease in volume for the left channel, allowing
32 levels of volume, from 00000 to 11111.
Eight Channel AC’97 2.3 Audio Codec
NL/NR
CL/CR
14:13
14:13
12:8
12:8
For
For
7:5
4:0
7:5
4:0
Bit
Bit
15
15
MX10 LINE_IN Volume
MX12 CD Volume
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
1Fh
1Fh
00h
08h
00h
08h
-
-
-
-
Function
Mute Control
0: Normal
1: Mute (-∞dB)
Reserved
Line-In Left Volume (NL[4:0]) in 1.5dB steps
Reserved
Line-In Right Volume (NR[4:0]) in 1.5dB steps
+12dB Gain
-34.5dB Gain
Function
Mute Control
0: Normal
1: Mute (-∞dB)
Reserved
CD Left Volume (CL[4:0]) in 1.5dB steps
Reserved
CD Right Volume (CR[4:0]) in 1.5dB steps
+12dB Gain
-34.5dB Gain
0dB attenuation
0dB attenuation
Table 12. MX10 LINE_IN Volume
Table 13. MX12 CD Volume
12
Track ID: JATR-1076-21 Rev. 1.4
Datasheet
ALC850