AK4691 Datasheet, PDF (76/80 Pages) Asahi Kasei Microsystems – 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP

[AK4691]
Addr
25H
Register Name
Digital Filter Select 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
GN1B GN0B
0
FIL1B EQB FIL3B
0
0
R/W
R/W
RD
R/W
R/W
R/W
RD
RD
0
0
0
0
0
0
0
0
FIL3B: FIL3B (Stereo Separation Emphasis Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When FIL3B bit is “1”, the settings of F3A13B-0B and F3B13B-0B bits are enabled. When FIL3B bit is “0”,
FIL3B block is OFF (MUTE).
EQB: EQB (Gain Compensation Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When EQB bit is “1”, the settings of EQA15B-0B, EQB13B-0B and EQC15B-0B bits are enabled. When
EQB bit is “0”, EQB block is through (0dB).
FIL1B: FIL1B (Wind-noise Reduction Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When FIL1B bit is “1”, the settings of F1A13B-0B and F1B13B-0B bits are enabled. When FIL1B bit is “0”,
FIL1B block is through (0dB).
GN1B-0B: Gain Select at GAIN block in ADC2 (Table 24)
Default: “00” (0dB)
MS0672-E-00
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2007/11