AK4641 Datasheet, PDF (30/51 Pages) Asahi Kasei Microsystems – 16 BIT CODEC WITH BLUETOOTH INTERFACE

ASAHI KASEI
[AK4641]
„ AUX Input
AUXIN+
AUXIN−
GN3-0 bits
AUXL bit
Volume
AUXAD bit
Figure 27. AUX Input
Stereo Mixer
Mixer for ADC
of Stereo CODEC
AUX input is differential input at AUXSI bit = “0” and single end input at AUXSI bit = “1”. AUXIN+ pin should be used
at single end input (AUXSI bit = “1”). The AK4641 has a volume for AUX Input. This Volume is controlled by GN3-0
bits as shown in Table 16. 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 16. AUX Input Gain Setting
MS0301-E-00
- 30 -
2004/05