wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 245
wm8351
Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8351.pdf
(328 pages)
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Production Data
REGISTER
Register 30h DAC Control
Register 32h DAC Digital Volume L
w
DAC Control
REGISTER
ADDRESS
ADDRESS
DAC Digital
R48 (30h)
R50 (32h)
Volume L
BIT
BIT
5:4
13
12
7:0
3
1
0
15
8
DAC_SDMCLK_RATE
DACL_VOL[7:0]
AIF_LRCLKRATE
DACR_DATINV
DACL_ENA
DACL_DATINV
DAC_VU
DAC_MONO
LABEL
DEEMP[1:0]
LABEL
DEFAULT
1100_0000 Left DAC digital volume control:
DEFAULT
0
0
00
0
0
0
0
0
Left DAC enable
0 = disabled
1 = enabled
DAC left and DAC right volume do not update until a
1 is written to either DAC_VU register bit.
0000_0000 = Digital mute
0000_0001 = -71.625dB
0000_0010 = -71.25dB
… (0.375dB steps)
1100_000 = 0dB
Adds left and right channel and halves the
resulting output to create a mono output
Mode Select
1 = USB mode (272 * Fs)
0 = Normal mode (256 * Fs)
DAC De-emphasis filter control
00 = No de-emphasis
01 = 32kHz sample rate
10 = 44.1kHz sample rate
11 = 48kHz sample rate
DAC_SDMCLK_RATE allows the DAC SDM to
be run at a speed higher than 64*fs. This is used
for low sample rate modes to allow the SDM to
run fast enough to shape the noise so that none
of it appears in the audio band. On the previous
version, at 8k sample rate you could hear some
high frequency noise when playing back through
a decent system.
DAC data left channel polarity
0 = Normal
1 = Inverted
DAC data right channel polarity
0 = Normal
1 = Inverted
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
WM8351
245
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