CS4341 Datasheet, PDF (21/36 Pages) Cirrus Logic – 24-Bit, 96 kHz Stereo DAC with Volume Control

CS4341
4.11 VOLUME CONTROL
Channel A Volume Control Register (address 03h)
Channel B Volume Control Register (address 04h)
7
MUTE
6
VOL6
5
VOL5
4
VOL4
3
VOL3
Access:
R/W in I²C and write only in SPI.
2
VOL2
1
VOL1
0
VOL0
Default:
0 - 0 dB (No attenuation)
Function:
The digital volume control allows the user to attenuate the signal in 1 dB increments from 0 to -90 dB.
Volume settings are decoded as shown in Table 11. The volume changes are implemented as dic-
tated by the Soft and Zero Cross bits in the Volume and Mixing Control register. All volume settings
less than - 94 dB are equivalent to enabling the Mute bit.
Binary Code
0000000
0010100
0101000
0111100
1011010
Decimal Value
0
20
40
60
90
Volume Setting
0 dB
-20 dB
-40 dB
-60 dB
-90 dB
Table 11. Digital Volume Settings
DS298PP2
21