alc250-lf Realtek Semiconductor Corporation, alc250-lf Datasheet - Page 32

• Manufacturer Part Number: alc250-lf
• Description: Two-channel Ac?97 2.3 Audio Codec With Equalizer
• Manufacturer: Realtek Semiconductor Corporation

6.5.21 Index-21h EQ PCM Digital Volume Control
Default: 007Fh
6.5.22 Index-22h EQ MIC ADC Digital Volume Control
Default: 007Fh
Two-Channel AC’97 2.3 Audio Codec
If 7-bit volume ratio is 7Fh, it means the multiplier is 1 (0dB).
If 7-bit volume ratio is 7Fh, it means the multiplier is 1 (0dB).
14:7
14:7
Bit
6:0
Bit
6:0
15
15
Type
Type
R/W
R/W
R/W
R/W
Mute Control.
Reserved
7-bit Volume Ratio, EQVR[7:0]
The multiplier ratio is EQVR[7:0]/128. (1/128 ~ 1)
Mute Control.
Reserved
7-bit Volume Ratio, EQMICVR[7:0]
The multiplier ratio is EQMICVR[7:0]/128. (1/128 ~ 1)
0: Turn on
1: Mute, force data to zero. (-∞ dB)
0: Turn on
1: Mute, force data to zero. (-∞ dB)
27
Function
Function
ALC250 DataSheet
Rev1.3