ak4563a AKM Semiconductor, Inc., ak4563a Datasheet - Page 24

• Manufacturer Part Number: ak4563a
• Description: Low Power 16bit 4ch Adc & 2ch Dac With Alc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0067-E-02
Addr
05H
REF6-0: Set the Reference value at ALC Recovery Operation
Register Name
ALC Mode Control 2
RESET
During the ALC recovery operation, when IPGA value becomes the reference value set by REF6-0, the
gain of the ALC recovery operation exceeds the reference value. The reference value is set commonly as
for Lch and Rch of IPGA0 and IPGA1.
During the ALC recovery operation, if IPGA value exceeds the setting reference value by GAIN operation,
IPGA does not become the larger than the reference value.
For example, when REF6-0 = 30H, RATT = 2 step and IPGA = 2FH, IPGA will become 2FH + 2 step =
31H by the ALC recovery operation, but IPGA value becomes 30H as REF value is 30H.
IPGA should be certainly set to the same value or smaller than REF value before entering ALC mode
(including the FADEIN/OUT operation).
R/W
Table 14. Setting Reference Value at ALC Recovery Operation
DATA
5EH
0EH
60H
5FH
28H
27H
19H
18H
17H
16H
11H
10H
0FH
05H
04H
03H
02H
01H
00H
D7
0
0
MUTE
+28.0
+27.5
+27.0
-10.0
-15.0
-16.0
-18.0
-38.0
-40.0
-44.0
-48.0
-52.0
-20.0
MIC
+0.0
-0.5
-7.5
-8.0
-9.0
REF6
GAIN(dB)
D6
- 24 -
MUTE
REF5
LINE
-22.0
-32.0
-37.0
-38.0
-40.0
-60.0
-62.0
-66.0
-70.0
-74.0
-22.5
-29.5
-30.0
-31.0
-42.0
+6.0
+5.5
+5.0
D5
REF4
D4
0.5dB
Step
1dB
2dB
4dB
R/W
REF3
28H
D3
Level
73
12
8
3
1
REF2
D2
REF1
D1
[AK4563A]
2004/12
REF0
D0