參數(shù)資料
型號: AK4646EN
廠商: ASAHI KASEI POWER DEVICES CORP
元件分類: 消費(fèi)家電
英文描述: Stereo CODEC with MIC/SPK-AMP
中文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝: 5 X 5 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, QFN-32
文件頁數(shù): 41/79頁
文件大?。?/td> 789K
代理商: AK4646EN
[AK4646]
MS0557-E-02
2007/05
- 41 -
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)
F1H
F0H
EFH
:
C5H
:
92H
91H
90H
:
2H
1H
0H
+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 ALC Operation
Table 32 and Table 33 show the examples of the ALC setting for recording and playback path.
fs=8kHz
Operation
4.1dBFS
Enable
32ms
fs=44.1kHz
Operation
4.1dBFS
Enable
23.2ms
Register Name
Comment
Data
01
0
01
Data
01
0
11
LMTH1-0
ZELMN
ZTM1-0
Limiter detection Level
Limiter zero crossing detection
Zero crossing timeout period
Recovery waiting period
*WTM2-0 bits should be the same data
as ZTM1-0 bits
Maximum gain at recovery operation
WTM2-0
001
32ms
100
46.4ms
IREF7-0
IVL7-0,
IVR7-0
LMAT1-0
LFST
RGAIN1-0
RFST1-0
ALC1
E1H
+30dB
E1H
+30dB
Gain of IVOL
E1H
+30dB
E1H
+30dB
Limiter ATT step
Fast Limiter Operation
Recovery GAIN step
Fast Recovery Speed
ALC enable
00
1
00
00
1
1 step
ON
1 step
4 times
Enable
00
1
00
00
1
1 step
ON
1 step
4 times
Enable
Table 32. Example of the ALC setting (Recording)
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PDF描述
AK4647 Stereo CODEC with MIC/HP-AMP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4646ENP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:STEREO CODEC+SPK
AK4646EZ 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/SPK-AMP
AK4647 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4647VN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4647VQ 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP