CS43L42 datasheet(19/40 Pages) CIRRUS

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CS43L42

DS481PP2

4.6 Tone Control (address 06h)

4.6.1 BASS BOOST LEVEL (BB)

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 3. Levels above

+12 dB are interpreted as +12 dB.

4.6.2 TREBLE BOOST LEVEL (TB)

Default = 0 dB (No Treble Boost)

Function:

The level of the shelving treble boost filter is set by Treble 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 4. Levels above

+12 dB are interpreted as +12 dB.

Note:

Treble Boost is not available in High-Rate Mode.

Binary Code

Decimal Value

Volume Setting

00001010

+12 dB

00000111

+7 dB

00000000

0 dB

11000100

-60

-60 dB

10100110

-90

-90 dB

Table 2. Example Digital Volume Settings

654

BB3

BB2

BB1

BB0

TB3

TB2

TB1

TB0

000

Binary Code

Decimal Value

Boost Setting

0000

0 dB

0010

+2 dB

1010

+6 dB

1001

+9 dB

1100

+12 dB

Table 3. Example Bass Boost Settings

Binary Code

Decimal Value

Boost Setting

0000

0 dB

0010

+2 dB

1010

+6 dB

1001

+9 dB

1100

+12 dB

Table 4. Example Treble Boost Settings

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