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CS43L43-KZ Datasheet(PDF) 17 Page - Cirrus Logic

Part # CS43L43-KZ
Description  Low Voltage,Stereo DAC With Headphone Amp
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS43L43-KZ Datasheet(HTML) 17 Page - Cirrus Logic

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CS43L43
DS479PP3
17
5.2 CHANNEL A ANALOG ATTENUATION CONTROL (ADDRESS 02H) (VOLA)
5.3 CHANNEL B ANALOG ATTENUATION CONTROL (ADDRESS 03H) (VOLB)
Default = 0 dB (No attenuation)
Function:
The Analog Attenuation Control operates independently from the Digital Volume Control. The Analog At-
tenuation Control registers allow the user to attenuate the headphone output signal in 1 dB increments
from 0 to -25 dB, using the analog volume control. Attenuation settings are decoded as shown in Table 7,
using a 2’s complement code. The volume changes are implemented as dictated by the Soft and Zero
Cross bits in the Power and Muting Control register. All volume settings greater than zero are interpreted
as zero.
NOTE: When the Analog Headphone Attenuation Control registers are set for attenuation levels greater
than -10dB, the actual attenuation deviates from the register setting by more than 1dB.
7
654
32
10
VOLx7
VOLx6
VOLx5
VOLx4
VOLx3
VOLx2
VOLx1
VOLx0
0
000
00
00
Binary Code
Decimal Value
Volume Setting
00000000
0
0 dB
11110110
-10
-10 dB
11110001
-15
-15 dB
Table 7. Example Analog Volume Settings


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