WM8351CGEB/RV WOLFSON [Wolfson Microelectronics plc], WM8351CGEB/RV Datasheet - Page 77
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WM8351CGEB/RV
Manufacturer Part Number
WM8351CGEB/RV
Description
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8351CGEBRV.pdf
(330 pages)
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Production Data
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The digital audio data is converted to oversampled bit streams in the on-chip 24-bit digital
interpolation filters. The bitstream data enters two multi-bit, sigma-delta DACs, which convert them to
high quality analogue audio signals. The multi-bit DAC architecture reduces high frequency noise and
sensitivity to clock jitter. It also uses a Dynamic Element Matching technique for high linearity and low
distortion.
In normal operation, the left and right channel digital audio data is converted to analogue in two
separate DACs. It is also possible for the DACs to output a mono mix of left and right channels, using
DAC_MONO. Both DACs must be enabled for this mono mix to function.
Table 35 DAC Mono Mix and Phase Invert Select
13.7.5
The DAC digital filter type is selected by the DAC_SB_FILT register bit as shown in Table 36.
Table 36 DAC Filter Selection
13.7.4
R59 (3Bh)
DAC Digital
Control
R48 (30h) DAC
Control
REGISTER
REGISTER
ADDRESS
ADDRESS
DAC OUTPUT PHASE AND MONO MIXING
DAC STOPBAND ATTENUATION
12
BIT
13
BIT
1
0
DAC_MONO
DACL_DATINV
DACR_DATINV
DAC_SB_FILT
LABEL
LABEL
DEFAULT
DEFAULT
0
0
0
0
Selects DAC filter characteristics
0 = Normal mode
1 = Sloping stopband mode
Adds left and right channel and
halves the resulting output to
create a mono output
DAC data left channel polarity
0 = Normal
1 = Inverted
DAC data right channel polarity
0 = Normal
1 = Inverted
DESCRIPTION
DESCRIPTION
PD, April 2012, Rev 4.5
WM8351
77
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