參數(shù)資料
型號(hào): AK4633
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述: 16位單聲道編解碼器ALC的
文件頁數(shù): 47/82頁
文件大?。?/td> 688K
代理商: AK4633
ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 47 -
3. The Volume at the ALC Operation
The current volume value at the ALC operation is reflected by VOL7-0 bits. It is enable to check the current volume value
with reading the register value of VOL7-0 bits.
VOL7-0bits
GAIN(0dB)
0EH
0FH
10H
:
3AH
:
6DH
6EH
6FH
:
FDH
FEH
FFH
+36.0
+35.625
+35.25
:
+19.5
:
+0.375
0.0
-0.375
:
-53.625
-54.0
MUTE
Table 31. Value of VOL7-0 bits
4. Example of the ALC Operation for Recording Operation
Table 32 shows the examples of the ALC setting for mic recording.
fs=8kHz
Operation
4.1dBFS
Enable
16ms
fs=16kHz
Operation
4.1dBFS
Enable
16ms
Register Name
Comment
Data
01
0
00
Data
01
0
01
LMTH
ZELM
ZTM1-0
Limiter detection Level
Limiter zero crossing detection
Zero crossing timeout period
Recovery waiting period
*WTM1-0 bits should be the same data
as ZTM1-0 bits
Maximum gain at recovery operation
Gain of IVOL
Limiter ATT step
Recovery GAIN step
ALC enable
Speed of Fast Recovery
Table 32. Example of the ALC Setting (Recording)
WTM1-0
00
16ms
01
16ms
IREF7-0
IVOL7-0
LMAT1-0
RGAIN1-0
ALC
FRSL1-0
C5H
C5H
11
00
1
00
19.5dB
19.5dB
1/2/4/8 step
1 step
Enable
4 times
C5H
C5H
11
00
1
10
19.5dB
19.5dB
1/2/4/8 step
1 step
Enable
4times
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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AK4633VN 制造商:AKM 制造商全稱:AKM 功能描述:16bit mono CODEC with MIC/SPK amplifier.
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AK4634 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP
AK4635 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP