參數(shù)資料
型號(hào): AK4566VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 20bit Stereo CODEC with built-in IPGA & HP-AMP
中文描述: 20位立體聲編解碼器內(nèi)置單親遺傳算法
文件頁(yè)數(shù): 32/45頁(yè)
文件大?。?/td> 454K
代理商: AK4566VN
ASAHI KASEI
AKM CONFIDENTIAL
[AK4566]
REV 0.5
2002/2
- 32 -
Addr Register Name
04H
ALC Mode Control 2
Default
D7
0
0
D6
REF6
0
D5
REF5
1
D4
REF4
1
D3
REF3
1
D2
REF2
1
D1
REF1
1
D0
REF0
1
REF6-0: Reference Value at ALC Recovery Operation, 0.5dB step, 103 level, Default: “3FH” (Table 12)
During the ALC recovery operation, if the IPGA value exceeds the set reference value by gain operation,
IPGA does not become larger than the reference value. For example, when REF= “40H”, RATT= “1” (2
step) and IPGA= “3FH”, then IPGA is going to become 3FH + 2step = 41H, but IPGA becomes 40H in fact,
since REF=40H.
GAIN
DATA
AINL1, AINR1
(LINE IN)
+20.0dB
+19.5dB
+19.0dB
:
0dB
:
-12.0dB
:
-30.5dB
-31.0dB
MUTE (
)
AINL2, AINR2
(MIC IN)
+32.0dB
+31.5dB
+31.0dB
:
+12.0dB
:
0dB
:
-18.5dB
-19.0dB
MUTE (
)
67H
66H
65H
:
3FH
:
27H
:
02H
01H
00H
Default
Table 12. Reference Value Setting at ALC Recovery Operation
Addr
05H
Register Name
IPGA Control
Default
D7
0
0
D6
D5
D4
D3
D2
D1
D0
IPGA6
0
IPGA5
1
IPGA4
1
IPGA3
1
IPGA2
1
IPGA1
1
IPGA0
1
IPGA6-0: Input Analog PGA, 0.5dB step, 103 level, Default: “3FH” (Table 13)
GAIN
DATA
AINL1, AINR1
(LINE IN)
+20.0dB
+19.5dB
+19.0dB
:
0dB
:
-12.0dB
:
-30.5dB
-31.0dB
MUTE (
)
Table 13. Input Gain Setting
AINL2, AINR2
(MIC IN)
+32.0dB
+31.5dB
+31.0dB
:
+12.0dB
:
0dB
:
-18.5dB
-19.0dB
MUTE (
)
67H
66H
65H
:
3FH
:
27H
:
02H
01H
00H
Default
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