CS43L21 datasheet(48/63 Pages) CIRRUS

48 / 63 page

DS723A1

CS43L21

Tone Control Enable (TC_EN)

Default = 0

0 - Disabled

1 - Enabled

Function:

The Bass and Treble tone control features are active when this bit is enabled.

6.11

Tone Control (Address 15h)

Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.

Treble Gain Level (TREB[3:0])

Default: 1000 dB (No Treble Gain)

Function:

The level of the shelving treble gain filter is set by Treble Gain Level. The level can be adjusted in 1.5 dB

increments from +12.0 to -10.5 dB.

Bass Gain Level (BASS[3:0])

Default: 1000 dB (No Bass Gain)

Function:

The level of the shelving bass gain filter is set by Bass Gain Level. The level can be adjusted in 1.5 dB in-

crements from +10.5 to -10.5 dB.

543

TREB3

TREB2

TREB1

TREB0

BASS3

BASS2

BASS1

BASS0

Binary Code

Gain Setting

0000

+12.0 dB

···

0111

+1.5 dB

1000

0 dB

1001

-1.5 dB

···

1111

-10.5 dB

Binary Code

Gain Setting

0000

+12.0 dB

···

0111

+1.5 dB

1000

0 dB

1001

-1.5 dB

···

1111

-10.5 dB

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