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WM8580 датащи(PDF) 35 Page - Wolfson Microelectronics plc

номер детали WM8580
подробное описание детали  Multichannel CODEC with S/PDIF Transceiver
PDF  92 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8580 датащи(HTML) 35 Page - Wolfson Microelectronics plc

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Production Data
WM8580
w
PD Rev 4.0 February 2007
35
DE-EMPHASIS MODE
A digital de-emphasis filter may be applied to each DAC channel. The de-emphasis filter for each
stereo channel is enabled under the control of DEEMP[2:0]. DEEMP[0] enables the de-emphasis
filter for DAC 1, DEEMP[1] enables the de-emphasis filter for DAC 2, and DEEMP[2] enables the de-
emphasis filter for DAC 3.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
2:0
DEEMP[2:0]
000
De-emphasis mode select:
DEEMP[0] = 1, enable De-
emphasis on DAC1.
DEEMP[1] = 1, enable De-
emphasis on DAC2.
DEEMP[2] = 1, enable De-
emphasis on DAC3.
R17
DAC CONTROL 3
11h
4
DEEMPALL
0
0 = De-emphasis controlled by
DEEMP[2:0]
1 = De-emphasis enabled on all
DACs
Table 27 De-emphasis Register
Refer to Figure 41, Figure 42, Figure 43, Figure 44, Figure 45 and Figure 46 for details of the De-
Emphasis modes at different sample rates.
DAC OUTPUT PHASE
The DAC Phase control word determines whether the output of each DAC is non-inverted or inverted
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R18
DAC CONTROL 4
12h
5:0
PHASE
[5:0]
111111
Controls phase of DAC outputs
0 = non-inverted
1 = inverted
PHASE[0] = 1 inverts phase of
DAC1L output
PHASE[1] = 1 inverts phase of
DAC1R output
PHASE[2] = 1 inverts phase of
DAC2L output
PHASE[3] = 1 inverts phase of
DAC2R output
PHASE[4] = 1 inverts phase of
DAC3L output
PHASE[5] = 1 inverts phase of
DAC3R output
Table 28 DAC Output Phase Register



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