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MAS3507D Datasheet(PDF) 38 Page - Micronas

Part # MAS3507D
Description  MPEG 1/2 Layer 2/3 Audio Decoder
Download  60 Pages
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Manufacturer  MICRONAS [Micronas]
Direct Link  http://www.micronas.com
Logo MICRONAS - Micronas

MAS3507D Datasheet(HTML) 38 Page - Micronas

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MAS 3507D
PRELIMINARY DATA SHEET
38
Micronas
Fig. 3–2: Digital volume matrix
The fixed point gain values correspond to 20 bit 2’s
complement notation. The conversion between fixed
point and 2’s complement notation is done easily by
the algorithms described in Section 3.2.1.
Table 3–21 contains the converted gain values as used in the ’write D1 memory’ command
−1
−1
−1
−1
LL
LR
RL
RR
+
+
left audio
right audio
Table 3–20: Settings for the digital volume matrix
Memory
location
D1:
$7f8
D1:
$7f9
D1:
$7fa
D1:
$7fb
Name
LL
LR
RL
RR
Stereo
(default)
−1.0
0
0
−1.0
Mono
left
−1.0
−1.0
0
0
Mono
right
00
−1.0
−1.0
Table 3–21: Volume matrix conversion (dB into hexadecimal)
Volume
(in dB)
Hexa
decimal
Volume
(in dB)
Hexa
decimal
Volume
(in dB)
Hexa
decimal
Volume
(in dB)
Hexa
decimal
Volume
(in dB)
Hexa
decimal
0
80000
−20
F3333
−40
FEB85
−60
FFDF4
−80
FFFCC
−1
8DEB8
−21
F4979
−41
FEDBF
−61
FFE2D
−81
FFFD1
−29A537
−22
F5D52
−42
FEFBB
−62
FFE60
−82
FFFD6
−3
A5621
−23
F6F03
−43
FF180
−63
FFE8D
−83
FFFDB
−4AF3CD
−24
F7EC8
−44
FF314
−64
FFEB5
−84
FFFDF
−5
B8053
−25
F8CD5
−45
FF47C
−65
FFED9
−85
FFFE3
−6BFD92
−26
F995B
−46
FF5BC
−66
FFEF9
−86
FFFE6
−7
C6D31
−27
FA485
−47
FF6DA
−67
FFF16
−87
FFFE9
−8
CD0AD
−28
FAE78
−48
FF7D9
−68
FFF2F
−88
FFFEB
−9
D2958
−29
FB756
−49
FF8BC
−69
FFF46
−89
FFFED
−10
D785E
−30
FBF3D
−50
FF986
−70
FFF5A
−90
FFFEF
−11
DBECC
−31
FC648
−51
FFA3A
−71
FFF6C
−91
FFFF1
−12
DFD91
−32
FCC8E
−52
FFADB
−72
FFF7C
−92
FFFF3
−13
E3583
−33
FD227
−53
FFB6A
−73
FFF8B
−93
FFFF4
−14
E675F
−34
FD723
−54
FFBEA
−74
FFF97
−94
FFFF6
−15
E93CF
−35
FDB95
−55
FFC5C
−75
FFFA3
−95
FFFF7
−16
EBB6A
−36
FDF8B
−56
FFCC1
−76
FFFAD
−96
FFFF8
−17
EDEB6
−37
FE312
−57
FFD1B
−77
FFFB6
−97
FFFF9
−18
EFE2C
−38
FE638
−58
FFD6C
−78
FFFBE
−98
FFFF9
−19
F1A36
−39
FE905
−59
FFDB4
−79
FFFC5
−99
FFFFA


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