AK4950 Datasheet, PDF (87/106 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP & mini DSP

[AK4950]
Register Map 2
MIC Sensitivity Compensation Coefficient
Addr
Register Name
D23 ~ D20 D19 ~ D16 D15 ~ D12 D11 ~ D8
Default
D7 ~ D4
01H (3-wire)
81H (I²C)
Lch input volume
0001
0000
0000
0000
0000
02H (3-wire)
82H (I²C)
Rch input volume
0001
0000
0000
0000
0000
R/W
W
W
W
W
W
* MIC sensitivity compensation gain can be written to the DSP directly without setting register 2BH.
D3 ~ D0
0000
0000
W
HPF2 Coefficient
Addr
Register Name
D23 ~ D20 D19 ~ D16 D15 ~ D12 D11 ~ D8
Default
D7 ~ D4
D3 ~ D0
03H (3-wire)
83H (I²C)
HPF A0
0001
0000
0000
0000
0000
0000
04H (3-wire)
84H (I²C)
HPF A1
0000
0000
0000
0000
0000
0000
06H (3-wire)
86H (I²C)
HPF B1
0000
0000
0000
0000
0000
0000
R/W
W
W
W
W
W
W
* When the coefficients are in default setting, audio data passes through this block by 0dB gain even if HPF bit = “1”.
LPF Coefficient
Addr
Register Name
D23 ~ D20 D19 ~ D16 D15 ~ D12 D11 ~ D8
Default
D7 ~ D4
D3 ~ D0
09H (3-wire)
89H (I²C)
LPF A0
0001
0000
0000
0000
0000
0000
0AH (3-wire)
8AH (I²C)
LPF A1
0000
0000
0000
0000
0000
0000
0CH (3-wire)
8CH (I²C)
LPF B1
0000
0000
0000
0000
0000
0000
R/W
W
W
W
W
W
W
* When the coefficients are in default setting, audio data passes through this block by 0dB gain even if LPF bit = “1”.
Stereo Emphasis FIL3 Coefficient
Addr
Register Name
D23 ~ D20
D19 ~ D16
D15 ~ D12 D11 ~ D8
Default
D7 ~ D4
D3 ~ D0
0FH (3-wire)
8FH (I²C)
Stereo Filter A0
0001
0000
0000
0000
0000
0000
10H (3-wire)
90H (I²C)
Stereo Filter A1
0000
0000
0000
0000
0000
0000
11H (3-wire)
91H (I²C)
Stereo Filter A2
0000
0000
0000
0000
0000
0000
12H (3-wire)
92H (I²C)
Stereo Filter B1
0000
0000
0000
0000
0000
0000
13H (3-wire)
93H (I²C)
Stereo Filter B2
0000
0000
0000
0000
0000
0000
R/W
W
W
W
W
W
W
* When the coefficients are in default setting, audio data passes through this block by 0dB gain even if FIL3 bit = “1”.
MS1320-E-00
- 87 -
2011/10