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): 29/33頁
文件大?。?/td> 249K
代理商: AK4565VF
ASAHI KASEI
[AK4565]
MS0132-E-01
2003/05
- 29 -
Addr
07H
Register Name
Input PGA Control
R/W
Default
D7
0
D6
D5
D4
D3
D2
D1
D0
IPGA6
IPGA5
IPGA4
IPGA3
IPGA2
IPGA1
IPGA0
R/W
0
28H
IPGA6-0: Input Analog PGA; 97 levels; Commonly Lch and Rch of IPGA.
The IPGA value should be the same or smaller than REF value before the ALC operation including the
FADEIN/FADEOUT operation.
When IPGA gain is changed, IPGA6-0 bits should be written while PM0 bit is “1” and ALC bit is “0”.
(refer to “Operation of IPGA” description)
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 13. Input Gain Setting
IPGA value is reset at PM0 = “0”.
Step
Level
+6.0
+5.5
+5.0
0.5dB
73
1dB
8
2dB
12
4dB
3
1
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