Datasheet
[AK4646]
MS0557-E-06 2011/06
- 62 -
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 D7 D6 D5 D4 D3 D2 D1 D0
12H FIL3 Co-efficient 0 F3A7 F3A6 F3A5 F3A4 F3A3 F3A2 F3A1 F3A0
13H FIL3 Co-efficient 1 F3AS 0 F3A13 F3A12 F3A11 F3A10 F3A9 F3A8
14H FIL3 Co-efficient 2 F3B7 F3B6 F3B5 F3B4 F3B3 F3B2 F3B1 F3B0
15H FIL3 Co-efficient 3 0 0 F3B13 F3B12 F3B11 F3B10 F3B9 F3B8
16H EQ0-efficient 0 E0A7 E0A6 E0A5 E0A4 E0A3 E0A2 E0A1 E0A0
17H EQ0-efficient 1 E0A15 E0A14 E0A13 E0A12 E0A11 E0A10 E0A9 E0A8
18H EQ0-efficient 2 E0B7 E0B6 E0B5 E0B4 E0B3 E0B2 E0B1 E0B0
19H EQ0-efficient 3 0 0 E0B13 E0B12 E0B11 E0B10 E0B9 E0B8
1AH EQ0-efficient 4 E0C7 E0C6 E0C5 E0C4 E0C3 E0C2 E0C1 E0C0
1BH EQ0-efficient 5 E0C15 E0C14 E0C13 E0C12 E0C11 E0C10 E0C9 E0C8
R/W W W W W W W W 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 D7 D6 D5 D4 D3 D2 D1 D0
1CH HPF Co-efficient 0 F1A7 F1A6 F1A5 F1A4 F1A3 F1A2 F1A1 F1A0
1DH HPF Co-efficient 1 0 0 F1A13 F1A12 F1A11 F1A10 F1A9 F1A8
1EH HPF Co-efficient 2 F1B7 F1B6 F1B5 F1B4 F1B3 F1B2 F1B1 F1B0
1FH HPF Co-efficient 3 0 0 F1B13 F1B12 F1B11 F1B10 F1B9 F1B8
R/W W W W W W 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 D7 D6 D5 D4 D3 D2 D1 D0
2CH LPF Co-efficient 0 F2A7 F2A6 F2A5 F2A4 F2A3 F2A2 F2A1 F2A0
2DH LPF Co-efficient 1 0 0 F2A13 F2A12 F2A11 F2A10 F2A9 F2A8
2EH LPF Co-efficient 2 F2B7 F2B6 F2B5 F2B4 F2B3 F2B2 F2B1 F2B0
2FH LPF Co-efficient 3 0 0 F2B13 F2B12 F2B11 F2B10 F2B9 F2B8
R/W W W W W W W W W
Default 0 0 0 0 0 0 0 0
F2A13-0, F2B13-0: FIL2 (LPF) Coefficient (14bit x 2)
Default: “0000H”