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SM6451AV Datasheet(PDF) 8 Page - Nippon Precision Circuits Inc

Part # SM6451AV
Description  Audio Variable Volume IC
PDF  12 Pages
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM6451AV Datasheet(HTML) 8 Page - Nippon Precision Circuits Inc

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SM6451AV
NIPPON PRECISION CIRCUITS—8
D9, D8
Channel select bits. The selected channel(s) are shown in table 1.
D7 to D0
Attenuation register (ATT) set bits.
Table 1. Channel select
D9
D8
Selected channel
LOW
LOW
Both left and right channels
LOW
HIGH
Left channel
HIGH
LOW
Right channel
HIGH
HIGH
No change
Table 2. Attenuation setting1
1.
Outputs are muted after system reset.
Attenuation
ATTH
D7
D6
D5
D4
D3
D2
D1
D0
0 dB
00
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
−1 dB
01
LOW
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
−2 dB
02
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
LOW
:
:::::::::
−15 dB
0F
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
HIGH
−16 dB
10
LOW
LOW
LOW
HIGH
LOW
LOW
LOW
LOW
−17 dB
11
LOW
LOW
LOW
HIGH
LOW
LOW
LOW
HIGH
:
:::::::::
−63 dB
3F
LOW
LOW
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
−64 dB
40
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
−65 dB
41
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
HIGH
:
:::::::::
−79 dB
4F
LOW
HIGH
LOW
LOW
HIGH
HIGH
HIGH
HIGH
−80 dB
50
LOW
HIGH
LOW
HIGH
LOW
LOW
LOW
LOW
Mute
51
LOW
HIGH
LOW
HIGH
LOW
LOW
LOW
HIGH
Mute
52
LOW
HIGH
LOW
HIGH
LOW
LOW
HIGH
LOW
:
:::::::::
Mute
FE
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
Mute
FF
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH



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