ak4561 AKM Semiconductor, Inc., ak4561 Datasheet - Page 24

• Manufacturer Part Number: ak4561
• Description: 16bit Codec With Built-in Alc And Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
ALC Mode Control 2
Rev. 0.9
Addr
06H
REF6-0: Set the Reference value at ALC Recovery Operation
ALC Mode Control 2
RESET
Register Name
RESET
During the ALC recovery operation, if the IPGA value exceeds the setting reference value by
Gain operation, IPGA does not become the larger than the reference value.
For example, when REF=30H, RATT=2, IPGA=2FH and IPGA will become 2FH + 2step = 31H
by the ALC recovery operation, but the IPGA value becomes 30H as REF value is 30H.
Table 14. Setting Reference Value at ALC Recovery Operation
DATA
5EH
2CH
2BH
0EH
60H
5FH
19H
18H
17H
16H
11H
10H
0FH
05H
04H
03H
02H
01H
00H
D7
0
0
MUTE
+26.0
+25.5
+25.0
-10.0
-11.0
-12.0
-17.0
-18.0
-20.0
-22.0
-40.0
-42.0
-46.0
-50.0
-54.0
MIC
AKM CONFIDENTIAL
+0.0
-0.5
-9.5
REF6
D6
GAIN(dB)
1
- 24 -
REF5
MUTE
LINE
-26.0
-26.5
-35.5
-36.0
-37.0
-38.0
-43.0
-44.0
-46.0
-48.0
-66.0
-68.0
-72.0
-76.0
-80.0
+0.0
D5
-0.5
-1.0
1
REF4
D4
0
0.5dB
STEP
1dB
2dB
4dB
REF3
D3
0
LEVEL
73
12
8
3
1
REF2
D2
0
REF1
D1
0
[AK4561]
2000/09
REF0
D0
0