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參數(shù)資料
| 型號： | AK4565VF |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| 中文描述： | 低功耗20位編解碼器中的ALC的建造 |
| 文件頁數(shù)： | 27/33頁 |
| 文件大?。?/td> | 249K |
| 代理商： | AK4565VF |
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ASAHI KASEI
[AK4565]
MS0132-E-01
2003/05
- 27 -
Addr
05H
Register Name
ALC Mode Control 2
R/W
Default
D7
0
D6
REF6
D5
REF5
D4
REF4
D3
REF3
D2
REF2
D1
REF1
D0
REF0
R/W
0
28H
REF6-0: Set the Reference value at ALC Recovery Operation
During the ALC recovery operation, when IPGA value becomes the reference value set by REF6-0, the gain
of the ALC recovery operation exceeds the reference value. The reference value is set commonly as for Lch
and Rch of IPGA.
During the ALC recovery operation, if IPGA value exceeds the setting reference value by GAIN operation,
IPGA does not become the larger than the reference value.
For example, when REF6-0 = 30H, RATT = 2 step and IPGA = 2FH, IPGA will become 2FH + 2 step = 31H
by the ALC recovery operation, but IPGA value becomes 30H as REF value is 30H.
IPGA should be certainly set to the same value or smaller than REF value before entering ALC mode
(including the FADEIN/OUT operation).
GAIN(dB)
DATA
MIC
LINE
60H
+28.0
5FH
+27.5
5EH
+27.0
28H
+0.0
-22.0
27H
-0.5
-22.5
19H
-7.5
-29.5
18H
-8.0
-30.0
17H
-9.0
-31.0
16H
-10.0
-32.0
11H
-15.0
-37.0
10H
-16.0
-38.0
0FH
-18.0
-40.0
0EH
-20.0
-42.0
05H
-38.0
-60.0
04H
-40.0
-62.0
03H
-44.0
-66.0
02H
-48.0
-70.0
01H
-52.0
-74.0
00H
MUTE
MUTE
Table 12. Setting Reference Value at ALC Recovery Operation
Step
Level
+6.0
+5.5
+5.0
0.5dB
73
1dB
8
2dB
12
4dB
3
1
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| AK4566 | 制造商:AKM 制造商全稱:AKM 功能描述:20bit Stereo CODEC with built-in IPGA & HP-AMP |
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| AK4569 | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with IPGA & HP-AMP |
| AK4569VN | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with IPGA & HP-AMP |
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