[AK4223]
■ Audio Output Level Setting
AGCA12-10 bits control the audio output level of the L/ROUT1 pin, and AGCA22-20 bits controls the audio output
level of the L/ROUT2 pin. (Table 5, Table 6)
AGCA12 bit AGCA11 bit AGCA10 bit L/ROUT1 GAIN [dB] Output DC Level[V typ]
STEP
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0 (default)
-1
-2
-3
-4
-5
3.9
3.7
3.5
3.4
3.2
3.1
3.0
-
1dB
-6
Reserved
Table 5. L/ROUT1 Output Level Setting
AGCA22 bit AGCA21 bit AGCA20 bit L/ROUT2 GAIN [dB] Output DC Level[V typ]
STEP
1dB
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0 (default)
-1
-2
-3
-4
-5
3.9
3.7
3.5
3.4
3.2
3.1
3.0
-
-6
Reserved
Table 6. L/ROUT2 Output Level Setting
■ Audio Output Mute Select
The AK4223 has a channel independent mute function for audio outputs. AMUTE1/2 bits control L/ROUT1 and
L/ROUT2 outputs mute. (Table 7, Table 8)
AMUTE1 bit
L/ROUT1 Output
Normal Output
Mute
0
1
(default)
(default)
Table 7. L/ROUT1 Output Mute Control
AMUTE2 bit
L/ROUT2 Output
Normal Output
0
1
Mute
Table 8. L/ROUT2 Output Mute Control
MS1251-E-00
13
2010/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
