AK4633EN Datasheet, PDF (48/83 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

[AK4633]
5. Example of the ALC Operation for Playback Operation
Table 33 shows the examples of the ALC setting for playback operation.
Register Name
LMTH
ZELM
ZTM1-0
WTM1-0
OREF5-0
OVOL7-0
LMAT1-0
RGAIN1-0
ALC
FRSL1-0
Comment
fs=8kHz
Data
Operation
Limiter detection Level
01
4.1dBFS
Limiter zero crossing detection
0
Enable
Zero crossing timeout period
00
16ms
Recovery waiting period
*WTM1-0 bits should be the same data 00
16ms
as ZTM1-0 bits
Maximum gain at recovery operation
28
+6dB
Gain of IVOL
91
0dB
Limiter ATT step
11
1/2/4/8 step
Recovery GAIN step
00
1 step
ALC enable
1
Enable
Speed of Fast Recovery
00
4 times
Table 33. Example of the ALC Setting (Playback)
fs=16kHz
Data
Operation
01
4.1dBFS
0
Enable
01
16ms
01
16ms
28
+6dB
91
0dB
11
1/2/4/8 step
00
1 step
1
Enable
00
4 times
MS0447-E-06
- 48 -
2015/10