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WM8772SEDS/RV Datasheet(PDF) 37 Page - Wolfson Microelectronics plc

No. de pieza WM8772SEDS/RV
Descripción Electrónicos  24-bit, 192kHz 6-Channel Codec with Volume Control
PDF  73 Pages
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Fabricante Electrónico  WOLFSON [Wolfson Microelectronics plc]
Página de inicio  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8772SEDS/RV Datasheet(HTML) 37 Page - Wolfson Microelectronics plc

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Production Data
WM8772EDS – 28 LEAD SSOP
w
PD Rev 4.2 October 2005
37
DAC DIGITAL VOLUME CONTROL
The DAC volume may also be adjusted in the digital domain using independent digital attenuation
control registers
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
7:0
LDA1[7:0]
11111111
(0dB)
Digital Attenuation data for Left channel DACL1 in 0.5dB steps. See
Table 11
0000000
Digital
Attenuation
DACL1
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store LDA1 in intermediate latch (no change to output)
1: Store LDA1 and update attenuation on all channels
7:0
RDA1[6:0]
11111111
(0dB)
Digital Attenuation data for Right channel DACR1 in 0.5dB steps.
See Table 11
0000001
Digital
Attenuation
DACR1
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store RDA1 in intermediate latch (no change to output)
1: Store RDA1 and update attenuation on all channels.
7:0
LDA2[7:0]
11111111
(0dB)
Digital Attenuation data for Left channel DACL2 in 0.5dB steps. See
Table 11
0000100
Digital
Attenuation
DACL2
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store LDA2 in intermediate latch (no change to output)
1: Store LDA2 and update attenuation on all channels.
7:0
RDA2[7:0]
11111111
(0dB)
Digital Attenuation data for Right channel DACR2 in 0.5dB steps.
See Table 11
0000101
Digital
Attenuation
DACR2
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store RDA2 in intermediate latch (no change to output)
1: Store RDA2 and update attenuation on all channels.
7:0
LDA3[7:0]
11111111
(0dB)
Digital Attenuation data for Left channel DACL3 in 0.5dB steps. See
Table 11
0000110
Digital
Attenuation
DACL3
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store LDA3 in intermediate latch (no change to output)
1: Store LDA3 and update attenuation on all channels.
7:0
RDA3[7:0]
11111111
(0dB)
Digital Attenuation data for Right channel DACR3 in 0.5dB steps.
See Table 11
0000111
Digital
Attenuation
DACR3
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store RDA3 in intermediate latch (no change to output)
1: Store RDA3 and update attenuation on all channels.
7:0
MASTDA
[7:0]
11111111
(0dB)
Digital Attenuation data for all DAC channels in 0.5dB steps. See
Table 11
0001000
Master
Digital
Attenuation
(all channels)
8
UPDATE
Not latched
Controls simultaneous update of all Attenuation Latches
0: Store gain in intermediate latch (no change to output)
1: Store gain and update attenuation on all channels.
L/RDAX[7:0]
ATTENUATION LEVEL
00(hex)
-
∞ dB (mute)
01(hex)
-127dB
:
:
:
:
:
:
FE(hex)
-0.5dB
FF(hex)
0dB
Table 11 Digital Volume Control Attenuation Levels



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