[AK4675]
Addr Register Name
1DH Digital Filter Select
R/W
D7
GN1
R/W
0
D6
GN0
R/W
0
D5
LPF
R/W
0
D4
HPF
R/W
0
D3
EQ0
R/W
0
D2
FIL3
R/W
0
D1
HPFAD
R/W
1
D0
PFSEL
R/W
0
Default
PFSEL: Signal Select of Programmable Filter Block (Table 43.)
0: ADC Output Data (default)
1: SDTI Input Data
HPFAD: HPF Control of ADC
0: OFF
1: ON (default)
When HPFAD bit is “1”, the settings of F1A13-0 and F1B13-0 bits are enabled. When HPFAD bit is “0”,
HPFAD block is through (0dB).
GN1-0: Gain Select at GAIN block (Table 23)
Default: “00” (0dB)
FIL3: FIL3 (Stereo Separation Emphasis Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When FIL3 bit is “1”, the settings of F3A13-0 and F3B13-0 bits are enabled. When FIL3 bit is “0”, FIL3 block
is OFF (MUTE).
EQ0: EQ0 (Gain Compensation Filter) Coefficient Setting Enable
0: Disable (default)
1: Enable
When EQ0 bit is “1”, the settings of E0A15-0, E0B13-0 and E0C15-0 bits are enabled. When EQ0 bit is “0”,
EQ0 block is through (0dB).
HPF: HPF Coefficient Setting Enable
0: Disable (default)
1: Enable
When HPF bit is “1”, the settings of F1A13-0 and F1B13-0 bits are enabled. When HPF bit is “0”, HPF block
is through (0dB).
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).
MS0963-E-00
2008/05
- 159 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
