AK4538 Datasheet, PDF (31/70 Pages) Asahi Kasei Microsystems – 16Bit DS CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4538]
n AUX Input
AUXIN+
AUXIN-
“GN3-0”
“AUXL”
Volume
“AUXAD”
Figure 24. AUX Input
Stereo Mixer
Mixer for ADC
AUX input is differential input. The AK4538 has a volume for AUX Input. This Volume is controlled by GN3-0 bits as
shown in Table 22.The AK4538 register control for GN3-0 does not offer any de-clicking function at volume setting
change.
GN3-0
GAIN (dB)
FH
+24.0
EH
+21.0
DH
+18.0
:
:
7H
+0.0
Default
:
:
2H
-15.0
1H
-18.0
0H
-21.0
Table 22. AUX Input Gain Setting
MS0198-E-01
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2003/5