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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 42/79頁(yè) |
| 文件大小： | 789K |
| 代理商： | AK4646EN |
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[AK4646]
MS0557-E-02
2007/05
- 42 -
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
OREF5-0
OVL7-0,
OVR7-0
LMAT1-0
LFST
RGAIN1-0
RFST1-0
ALC2
28H
+6dB
28H
+6dB
Gain of VOL
91H
0dB
91H
0dB
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 33. Example of the ALC Setting (Playback)
The following registers should not be changed during the ALC operation. These bits should be changed after the ALC
operation is finished by ALC bit = “0” or PMADL=PMADR bits = “0”.
LMTH1-0, LMAT1-0, WTM2-0, ZTM1-0, RGAIN1-0, REF7-0, ZELMN, RFST1-0, LFST
Manual Mode
* The value of IVOL should be
the same or smaller than REF’s
WR (ZTM1-0, WTM2-0, RFST1-0)
WR (IREF7-0)
WR (IVL/R7-0)
WR (LMAT1-0, RGAIN0, ZELMN, LMTH0; ALC= “1”)
Example:
Limiter = Zero crossing Enable
Recovery Cycle = 32ms@8kHz
Limiter and Recovery Step = 1
Maximum Gain = +30.0dB
Limiter Detection Level =
4.1dBFS
ALC bit = “1”
(1) Addr=06H, Data=14H
(2) Addr=08H, Data=E1H
(5) Addr=07H, Data=21H
(3) Addr=09H&0CH, Data=E1H
ALC Operation
WR (RGAIN1, LMTH1)
(4) Addr=0BH, Data=28H
Note : WR : Write
Figure 29. Registers set-up sequence at ALC operation
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| 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 |
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