AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 49

• Manufacturer Part Number: AK4635
• Description: 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

5. Example of ALC for Playback Operation
Table 35
Rev. 0.6
Register Name
LMTH1-0
ZELM
ZTM1-0
WTM2-0
OREF5-0
OVOL7-0
LFST
LMAT1-0
RGAIN1-0
ALC2
FRSL1-0
shows the example of the ALC setting for playback.
Comment
Limiter detection Level
Zero crossing timeout period
Recovery waiting period
*WTM1-0 bits should be more than or
Maximum gain at recovery operation
Gain of IVOL
Fast Limiter Operation
Limiter ATT step
Recovery GAIN step
ALC enable
Speed of Fast Recovery
Limiter zero crossing detection
equal to ZTM1-0 bits
Table 35. Examples of the ALC Setting (Play back)
- 49 -
Data
000
01
00
28
91
00
00
00
0
1
1
fs=8kHz
−4.1dBFS
Operation
4 times
Enable
Enable
1 step
+6dB
16ms
16ms
1step
0dB
ON
Data
001
01
01
28
91
00
00
00
0
1
1
fs=16kHz
−4.1dBFS
Operation
4 times
Enable
Enable
1 step
+6dB
16ms
16ms
1step
0dB
ON
[AK4635]
2007/10