參數(shù)資料
型號： AK4671EG
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/RCV/HP-AMP
中文描述： 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù)： 70/164頁
文件大?。?/td> 1792K
代理商： AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 70 -
3.
Example of ALC Operation
Table 31
and
Table 32
show the examples of the ALC setting for mic recording and playback, respectively.
fs=8kHz
Operation
4.1dBFS
Enable
fs=44.1kHz
Operation
4.1dBFS
Enable
Register Name
Comment
Data
01
0
Data
01
0
LMTH1-0
ZELMN
Limiter detection Level
Limiter zero crossing detection
Zero crossing timeout period
* ZTM1-0 bits should be equal to or
shorter than WTM2-0 bits.
Recovery waiting period
Maximum gain at recovery operation
ZTM1-0
01
32ms
11
23.2ms
WTM2-0
REF7-0
IVL7-0,
IVR7-0
LMAT1-0
RGAIN1-0
RFST1-0
ALC
001
E1H
32ms
+30dB
100
E1H
46.4ms
+30dB
Gain of IVOL
E1H
+30dB
E1H
+30dB
Limiter ATT step
Recovery GAIN step
Fast Recovery Speed
ALC enable
00
00
00
1
1 step
1 step
4 times
Enable
00
00
00
1
1 step
1 step
4 times
Enable
Table 31. Example of the ALC setting (Recording 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 or
longer data as ZTM1-0 bits
Maximum gain at recovery operation
WTM2-0
001
32ms
100
46.4ms
REF5-0
IVL7-0,
IVR7-0
LMAT1-0
RGAIN1-0
RFST1-0
ALC
A1H
+6dB
A1H
+6dB
Gain of IVOL
91H
0dB
91H
0dB
Limiter ATT step
Recovery GAIN step
Fast Recovery Speed
ALC enable
00
00
00
1
1 step
1 step
4 times
Enable
00
00
00
1
1 step
1 step
4 times
Enable
Table 32. Example of the ALC setting (Playback Path)
相關PDF資料
PDF描述
AK4673 Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4682 Multi-channel CODEC with 2Vrms Stereo Selector
AK4682EQ Multi-channel CODEC with 2Vrms Stereo Selector
AK4683_07 Asynchronous Multi-Channel Audio CODEC with DIR/T
相關代理商/技術參數(shù)
參數(shù)描述
AK4673 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4675 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4675EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4682 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector
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