CDB4383 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CDB4383' PDF : 40 Pages View PDF
CS4383
3.7 Volume control (addresses 07h, 08h, 0Ah, 0Bh, 0Dh, 0Eh, 10h, 11h)
7
xx_MUTE
0
6
xx_VOL6
0
5
xx_VOL5
0
4
xx_VOL4
0
3
xx_VOL3
0
2
xx_VOL2
0
1
xx_VOL1
0
0
xx_VOL0
0
3.7.1 MUTE (MUTE)
Default = 0
0 - Disabled
1 - Enabled
Function:
The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output
will be retained. The muting function is effected, similar to attenuation changes, by the Soft and Zero
Cross bits. The MUTEC pins will go active during the mute period according to the MUTEC register.
3.7.2 VOLUME CONTROL (XX_VOL)
Default = 0 (No attenuation)
Function:
The Digital Volume Control registers allow independent control of the signal levels in 1 dB increments
from 0 to -127 dB. Volume settings are decoded as shown in Table 4. The volume changes are imple-
mented as dictated by the Soft and Zero Cross bits. All volume settings less than -127 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 4. Example Digital Volume Settings
22
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