
[AK4671] 
MS0666-E-00 
2007/10 
- 138 - 
Addr 
1EH 
1FH 
20H 
21H 
22H 
23H 
24H 
25H 
26H 
27H 
Register Name 
FIL3 Co-efficient 0 
FIL3 Co-efficient 1 
FIL3 Co-efficient 2 
FIL3 Co-efficient 3 
EQ Co-efficient 0 
EQ Co-efficient 1 
EQ Co-efficient 2 
EQ Co-efficient 3 
EQ Co-efficient 4 
EQ Co-efficient 5 
R/W 
Default 
D7 
F3A7 
F3AS 
F3B7 
0 
E0A7 
E0A15 
E0B7 
0 
E0C7 
E0C15 
W 
0 
D6 
F3A6 
0 
F3B6 
0 
E0A6 
E0A14
E0B6 
0 
E0C6 
E0C14
W 
0 
D5 
F3A5 
F3A13
F3B5 
F3B13
E0A5 
E0A13
E0B5 
E0B13
E0C5 
E0C13
W 
0 
D4 
F3A4 
F3A12 
F3B4 
F3B12 
E0A4 
E0A12 
E0B4 
E0B12 
E0C4 
E0C12 
W 
0 
D3 
F3A3 
F3A11
F3B3 
F3B11
E0A3 
E0A11
E0B3 
E0B11
E0C3 
E0C11
W 
0 
D2 
F3A2 
F3A10 
F3B2 
F3B10 
E0A2 
E0A10 
E0B2 
E0B10 
E0C2 
E0C10 
W 
0 
D1 
F3A1 
F3A9 
F3B1 
F3B9 
E0A1 
E0A9 
E0B1 
E0B9 
E0C1 
E0C9 
W 
0 
D0 
F3A0 
F3A8 
F3B0 
F3B8 
E0A0 
E0A8 
E0B0 
E0B8 
E0C0 
E0C8 
W 
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 
E0A15-0, E0B13-0, E0C15-C0: EQ0 (Gain Compensation Filter) Coefficient (14bit x 2 + 16bit x 1) 
Default: “0000H” 
Addr 
Register Name 
D7 
D6 
28H 
FIL1 Co-efficient 0 
F1A7 
F1A6 
29H 
FIL1 Co-efficient 1 
0 
0 
2AH 
FIL1 Co-efficient 2 
F1B7 
F1B6 
2BH 
FIL1 Co-efficient 3 
0 
0 
R/W 
W 
W 
Default 
F1A13-0 bits = “1FA9H”, F1B13-0 bits = “20ADH”
F1A13-0, F1B13-B0: FIL1 (Wind-noise Reduction Filter) Coefficient (14bit x 2) 
Default: F1A13-0 bits = “1FA9H”, F1B13-0 bits = “20ADH” (fc=150Hz@fs=44.1kHz) 
Addr 
Register Name 
D7 
D6 
2CH 
FIL2 Co-efficient 0 
F2A7 
F2A6 
2DH 
FIL2 Co-efficient 1 
0 
0 
2EH 
FIL2 Co-efficient 2 
F2B7 
F2B6 
2FH 
FIL2 Co-efficient 3 
0 
0 
R/W 
W 
W 
Default 
0 
0 
F2A13-0, F2B13-B0: FIL2 (LPF) Coefficient (14bit x 2) 
Default: “0000H” 
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 
F1A1 
F1A9 
F1B1 
F1B9 
W 
D0 
F1A0 
F1A8 
F1B0 
F1B8 
W 
D5 
F2A5 
F2A13
F2B5 
F2B13
W 
0 
D4 
F2A4 
F2A12 
F2B4 
F2B12 
W 
0 
D3 
F2A3 
F2A11
F2B3 
F2B11
W 
0 
D2 
F2A2 
F2A10 
F2B2 
F2B10 
W 
0 
D1 
F2A1 
F2A9 
F2B1 
F2B9 
W 
0 
D0 
F2A0 
F2A8 
F2B0 
F2B8 
W 
0