alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 15

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.1.10 MX16 AUX Volume
Default: 8808h
Register 16h controls the auxiliary 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.
6.1.11 MX18 PCM_OUT Volume
Default: 8808h
Register 18h controls the PCM_OUT output 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.
Two-Channel AC’97 2.3 Audio Codec
14:13
14:13
12:8
12:8
Bit
7:5
4:0
Bit
7:5
4:0
15
15
For ALV/ARV:
For PLV/PRV:
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
Mute Control 0: Normal
Reserved
AUX Left Volume (ALV[4:0]) in 1.5 dB steps
Reserved
AUX Right Volume (ARV[4:0]) in 1.5 dB steps
Mute Control 0: Normal
Reserved
PCM Volume (PLV[4:0]) in 1.5 dB steps
Reserved
PCM Right Volume (PRV[4:0]) in 1.5 dB steps
08h
1Fh
08h
1Fh
00h
00h
+12 dB Gain
0dB gain
-34.5dB Gain
+12 dB Gain
0dB gain
-34.5dB Gain
1: Mute (-∞ dB)
1: Mute (-∞ dB)
11
Function
Function
ALC203 DataSheet
Rev1.6