cs43l43 Cirrus Logic, Inc., cs43l43 Datasheet - Page 17

• Manufacturer Part Number: cs43l43
• Description: Low-voltage Stereo D/a Converter With Headphone Amplifier
• Manufacturer: Cirrus Logic, Inc.

5.2 CHANNEL A ANALOG ATTENUATION CONTROL (ADDRESS 02H) (VOLA)
5.3 CHANNEL B ANALOG ATTENUATION CONTROL (ADDRESS 03H) (VOLB)
DS479PP3
VOLx7
Binary Code
Function:
7
0
00000000
11110001
11110110
Default = 0 dB (No attenuation)
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.
Table 7. Example Analog Volume Settings
VOLx6
6
0
Decimal Value
VOLx5
-10
-15
0
5
0
VOLx4
4
0
Volume Setting
-10 dB
-15 dB
0 dB
VOLx3
3
0
VOLx2
2
0
VOLx1
1
0
CS43L43
VOLx0
0
0
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