Cirrus Logic CS43L21 - Manual (Page 49)

DS723F1 49
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.
6.12 AOUTx Volume Control:
7 6 5 4 3 2 1 0
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