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AK4635 Datasheet(PDF) 49 Page - Asahi Kasei Microsystems

Part # AK4635
Description  16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
PDF  81 Pages
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4635 Datasheet(HTML) 49 Page - Asahi Kasei Microsystems

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



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