adau1373 Analog Devices, Inc., adau1373 Datasheet - Page 66

• Manufacturer Part Number: adau1373
• Description: Low Power Codec With Speaker And Headphone Amplifier Adau1373
• Manufacturer: Analog Devices, Inc.

ADAU1373
3D ENHANCEMENT
The 3D enhancement block can be used to widen the stereo
separation between the left and right signals.
Table 29 and Table 30 show the two 3D enhancement registers,
E3D_CTRL1 and E3D_CTRL2 (Address 0xC0 and Address 0xC1,
respectively). These registers provide control to enhance the
Table 29. Bit Descriptions for Register 0xC0, E3D Enhancement Control 1 (E3D_CTRL1)
Bits
[7:4]
[3:0]
Table 30. Bit Descriptions for E3D Enhancement Control 2, Register 0xC1 (E3D_CTRL2)
Bits
[3:1]
0
Bit Name
E3D_LEVEL
E3D_ALPHA
Bit Name
E3D_GAIN
E3D_EN
Settings
Settings
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0000
0001
0010
0011
0100
0101
0110
000
001
010
011
100
101
110
111
0
1
Description
3D enhancement level control
0%, no 3D effect
6.67%
13.33%
20%
26.67%
33.33%
40%
46.67%
53.33%
60%
66.67%
73.33%
80%
86.67%
93.33%
100%
3D separate filter cutoff frequency
No 3D effect
1.5 kHz at 48 kHz sampling rate
2.2 kHz at 48 kHz sampling rate
3.6 kHz at 48 kHz sampling rate
5.5 kHz at 48 kHz sampling rate
8.1 kHz at 48 kHz sampling rate
13 kHz at 48 kHz sampling rate
Description
3D enhancement gain setting
E3D gain: 1
E3D gain: 0.125
E3D gain: 0.25
E3D gain: 0.375
E3D gain: 0.5
E3D gain: 0.625
E3D gain: 0.75
E3D gain: 0.875
3D enhancement enable control
Enhancement disable
Enhancement enable
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depth and level of the signal. The low-pass filter cutoff frequency
determines the frequency at which the effect begins to occur.
The 3D enhancement increases the gain of the signal, which can
be controlled by the E3D_GAIN bits (Register 0xC1, Bits[3:1]).
In addition, the depth of the 3D effect can be adjusted using the
E3D_ALPHA bits (Register 0xC0, Bits[3:0]). The depth must be
set to the desired effect based on the signal and setup.
Reset
0x0
0x0
Reset
0x0
0x0
Access
RW
RW
Access
RW
RW