ak4564 AKM Semiconductor, Inc., ak4564 Datasheet - Page 42

• Manufacturer Part Number: ak4564
• Description: 16bit Codec With Built-in Alc And Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ALC Mode Control 3
MS0140-E-01
Addr
09H
REF7-0: Reference value at ALC1 Recovery Operation. 0.375dB step, 242 Levels
ALC Mode Control 3
Default
Register Name
During the ALC1 recovery operation, if the REF value exceeds the setting reference value by
Gain operation, REF value does not become larger than the reference value.
GSEL bit selects the gain table of either MIC or LINE.
Table 22. Set-up Reference Level at ALC1 Recovery operation
REF7
DATA
DFH
D7
EFH
E2H
E1H
E0H
F1H
F0H
04H
03H
02H
01H
00H
1
(GSEL bit = “0”)
REF6
D6
1
+35.625
+30.375
+29.625
-52.875
-53.625
+35.25
+29.25
MUTE
-53.25
+36.0
+30.0
-54.0
MIC
- 42 -
REF5
D5
GAIN(dB)
1
(GSEL bit = “1”)
REF4
D4
-82.875
-83.625
+5.625
+0.375
MUTE
-0.375
-83.25
0
+5.25
LINE
-0.75
-84.0
+6.0
0
REF3
D3
0
Default
REF2
D2
0
REF1
D1
0
2002/07
REF0
D0
1