CS43L43-KZ View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS43L43-KZ' PDF : 36 Pages View PDF
CS43L43
5.4 CHANNEL A DIGITAL VOLUME CONTROL (ADDRESS 04H) (DVOLA)
5.5 CHANNEL B DIGITAL VOLUME CONTROL (ADDRESS 05H) (DVOLB)
7
DVOLx7
0
6
DVOLx6
0
5
DVOLx5
0
4
DVOLx4
0
3
DVOLx3
0
2
DVOLx2
0
1
DVOLx1
0
0
DVOLx0
0
Default = 0 dB (No attenuation)
Function:
The Digital Volume Control allows the user to alter the signal level in 1 dB increments from +18 to -96 dB,
using the Digital Volume Control. Volume settings are decoded as shown in Table 8, using a 2’s comple-
ment code. The volume changes are implemented as dictated by the Soft and Zero Cross bits in the Pow-
er and Muting Control register. All volume settings less than - 96 dB are equivalent to muting the channel
via the ATAPI bits (See Section 5.10.4).
NOTE: Setting this register to values greater than +18 dB will cause distortion in the audio outputs.
Binary Code
00001010
00000111
00000000
11000100
10100110
Decimal Value
12
7
0
-60
-90
Volume Setting
+12 dB
+7 dB
0 dB
-60 dB
-90 dB
Table 8. Example Digital Volume Settings
5.6 TONE CONTROL (ADDRESS 06H)
7
6
5
4
3
2
1
0
BB3
BB2
BB1
BB0
TB3
TB2
TB1
TB0
0
0
0
0
0
0
0
0
5.6.1 BASS BOOST LEVEL (BB) BIT 4-7
Default = 0 dB (No Bass Boost)
Function:
The level of the shelving bass boost filter is set by Bass Boost Level. The level can be adjusted in 1 dB
increments from 0 to +12 dB of boost. Boost levels are decoded as shown in Table 9. Levels above
+12 dB are interpreted as +12 dB.
Binary Code
0000
0010
0110
1001
1100
Decimal Value
0
2
6
9
12
Boost Setting
0 dB
+2 dB
+6 dB
+9 dB
+12 dB
Table 9. Example Bass Boost Settings
18
DS479PP3
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