AK4640_05 Datasheet, PDF (34/78 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4640]
„ AUX Input
AUXIN+
AUXIN−
“GN3-0”
“AUXL”
Volume
“AUXAD”
Figure 23. AUX Input
Stereo Mixer
Mixer for ADC
AUX input is differential input. The AK4640 has a volume for AUX Input. GN3-0 bits control this Volume as shown in
Table 19. The switching noise occurs when GN3-0 bits are changed.
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 19. AUX Input Gain Setting
MS0273-E-02
- 34 -
2005/04