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AK4141 Datasheet, PDF (47/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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CONFIDENTIAL
[AK4141]
Addr
27H
Register Name
ALC Mode Control 1
R/W
Default
D7
ALC1
R/W
0
D6
ZELMN1
R/W
0
D5
D4
RGAIN1[1:0]
R/W R/W
0
0
D3
D2
LMAT1[1:0]
R/W R/W
0
0
D1
D0
LMTH1[1:0]
R/W R/W
0
0
LMTH1[1:0]: ALCãªããã¿æ¤åºè¨å®ã¬ãã«/ãªã«ããªå¾
æ©ã«ã¦ã³ã¿ãªã»ããã¬ãã«
Default: â00â
LMTH11
0
0
1
1
LMTH10 ALCãªããã¿æ¤åºã¬ãã« ALCãªã«ããªå¾
æ©ã«ã¦ã³ã¿ãªã»ããã¬ãã«
0
ALC Output ï³ ï2.5dBFS
ï2.5dBFS > ALC Output ï³ ï4.1dBFS
1
ALC Output ï³ ï4.1dBFS
ï4.1dBFS > ALC Output ï³ ï6.0dBFS
0
ALC Output ï³ ï6.0dBFS
ï6.0dBFS > ALC Output ï³ ï8.5dBFS
1
ALC Output ï³ ï8.5dBFS
ï8.5dBFS > ALC Output ï³ ï12dBFS
Table 27. ALC ãªããã¿æ¤åºã¬ãã«ï¼ãªã«ããªå¾
æ©ã«ã¦ã³ã¿ãªã»ããã¬ãã«
(default)
LMAT1[1:0]: ALCãªããã¿ATTã¹ããã
Default: â00â
LMAT11
0
0
1
1
ALC1 ãªããã¿ATTã¹ããã
LMAT10 ALC1 Output ALC1 Output ALC1 Output ALC1 Output
ï³ LMTH
ï³ FS
ï³ FS + 6dB ï³ FS + 12dB
0
1
1
1
1
(default)
1
2
2
2
2
0
2
4
4
8
1
1
2
4
8
Table 28. ALC ãªããã¿ATTã¹ãããã®è¨å®
RGAIN1[1:0]: ALCãªã«ããªã²ã¤ã³ã¹ããã
Default: â00â
RGAIN11
0
0
1
1
RGAIN10
GAIN STEP
0
1 step
0.375dB
1
2 step
0.750dB
0
3 step
1.125dB
1
4 step
1.500dB
Table 29. ALC ãªã«ããªã²ã¤ã³éã®è¨å®
(default)
ZELMN1: ALCãªããã¿åä½æã¼ãã¯ãã¹æ¤åºã¤ãã¼ãã«
0: Enable (default)
1: Disable
ALC1: ALCã¤ãã¼ãã«
0: ALC Disable (default)
1: ALC Enable
MS0952-J-03
- 47 -
2013/12
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