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WM1811A bảng dữ liệu(PDF) 84 Page - Wolfson Microelectronics plc

tên linh kiện WM1811A
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WM1811A
Production Data
w
PD, November 2013, Rev 4.1
84
3D STEREO EXPANSION
The 3D Stereo Expansion is an audio enhancement feature which can be enabled in the digital
playback path of the WM1811A audio interfaces. This feature uses configurable cross-talk
mechanisms to adjust the depth or width of the stereo audio.
The WM1811A provides two 3D Stereo Expansion circuits; these are associated with AIF1 and AIF2
respectively. The 3D Stereo Expansion is enabled and controlled in these signal paths using the
register bits described in Table 34.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1057 (0421h)
AIF1 DAC1
Filters (2)
13:9
AIF1DAC1_3D_G
AIN
00000
AIF1DAC playback path 3D Stereo
depth
00000 = Off
00001 = Minimum (-16dB)
…(0.915dB steps)
11111 = Maximum (+11.45dB)
8
AIF1DAC1_3D_E
NA
0
Enable 3D Stereo in AIF1DAC
playback path
0 = Disabled
1 = Enabled
R1313 (0521h)
AIF2 DAC
Filters (2)
13:9
AIF2DAC_3D_GA
IN
00000
AIF2DAC playback path 3D Stereo
depth
00000 = Off
00001 = Minimum (-16dB)
…(0.915dB steps)
11111 = Maximum (+11.45dB)
8
AIF2DAC_3D_EN
A
0
Enable 3D Stereo in AIF2DAC
playback path
0 = Disabled
1 = Enabled
Table 34 3D Stereo Expansion Control



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