[AK4646]
LPF: LPF Coefficient Setting Enable
0: Disable (default)
1: Enable
When LPF bit is “1”, the settings of F2A13-0 and F2B13-0 bits are enabled. When LPF bit is “0”, LPF block
is through (0dB).
GN1-0: Gain Select at GAIN block (Table 22)
Default: “00”
Addr Register Name
12H FIL3 Co-efficient 0
13H FIL3 Co-efficient 1
14H FIL3 Co-efficient 2
15H FIL3 Co-efficient 3
16H EQ0-efficient 0
17H EQ0-efficient 1
18H EQ0-efficient 2
19H EQ0-efficient 3
1AH EQ0-efficient 4
1BH EQ0-efficient 5
R/W
D7
F3A7
F3AS
F3B7
0
E0A7
E0A15
E0B7
0
D6
F3A6
0
F3B6
0
E0A6
E0A14
E0B6
0
E0C6
E0C14
W
D5
F3A5
F3A13
F3B5
F3B13
E0A5
E0A13
E0B5
E0B13
E0C5
E0C13
W
D4
F3A4
F3A12
F3B4
F3B12
E0A4
E0A12
E0B4
E0B12
E0C4
E0C12
W
D3
F3A3
F3A11
F3B3
F3B11
E0A3
E0A11
E0B3
E0B11
E0C3
E0C11
W
D2
F3A2
F3A10
F3B2
F3B10
E0A2
E0A10
E0B2
E0B10
E0C2
E0C10
W
D1
D0
F3A1
F3A9
F3B1
F3B9
E0A1
E0A9
E0B1
E0B9
E0C1
E0C9
W
F3A0
F3A8
F3B0
F3B8
E0A0
E0A8
E0B0
E0B8
E0C0
E0C8
W
E0C7
E0C15
W
Default
0
0
0
0
0
0
0
0
F3A13-0, F3B13-0: FIL3 (Stereo Separation Emphasis Filter) Coefficient (14bit x 2)
Default: “0000H”
F3AS: FIL3 (Stereo Separation Emphasis Filter) Select
0: HPF (default)
1: LPF
EQA15-0, EQB13-0, EQC15-C0: EQ (Gain Compensation Filter) Coefficient (16bit x 2 + 14bit x 1)
Default: “0000H”
Addr Register Name
1CH HPF Co-efficient 0
1DH HPF Co-efficient 1
1EH HPF Co-efficient 2
1FH HPF Co-efficient 3
R/W
D7
F1A7
0
F1B7
0
D6
F1A6
0
F1B6
0
D5
F1A5
F1A13
F1B5
F1B13
W
D4
F1A4
F1A12
F1B4
F1B12
W
D3
F1A3
F1A11
F1B3
F1B11
W
D2
F1A2
F1A10
F1B2
F1B10
W
D1
D0
F1A1
F1A9
F1B1
F1B9
W
F1A0
F1A8
F1B0
F1B8
W
W
W
Default
F1A13-0 bits = 0x1FA9, F1B13-0 bits = 0x20AD
F1A13-0, F1B13-0: FIL1 (Wind-noise Reduction Filter) Coefficient (14bit x 2)
Default: F1A13-0 bits = 0x1FA9, F1B13-0 bits = 0x20AD
fc = 150Hz@fs=44.1kHz
Addr Register Name
2CH LPF Co-efficient 0
2DH LPF Co-efficient 1
2EH LPF Co-efficient 2
2FH LPF Co-efficient 3
R/W
D7
F2A7
0
F2B7
0
D6
F2A6
0
F2B6
0
D5
F2A5
F2A13
F2B5
F2B13
W
D4
F2A4
F2A12
F2B4
F2B12
W
D3
F2A3
F2A11
F2B3
F2B11
W
D2
F2A2
F2A10
F2B2
F2B10
W
D1
F2A1
F2A9
F2B1
F2B9
W
D0
F2A0
F2A8
F2B0
F2B8
W
W
W
Default
0
0
0
0
0
0
0
0
F2A13-0, F2B13-0: FIL2 (LPF) Coefficient (14bit x 2)
Default: “0000H”
MS0557-E-05
2011/01
- 62 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
