AK4635 Datasheet, PDF (73/81 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP

[AK4635]
Addr
11H
Register Name
Digital Filter Select 1
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
LPF
HPF
0
0
0
HPFAD
R
R
R/W
R/W
R
R
R
R/W
0
0
0
1
0
0
0
1
HPFAD: HPF Enable in ADC block
0: Disable
1: Enable (default)
When HPFAD bit is “0”, HPFAD block is bypassed (0dB).
When HPFAD bit is “1”, F1A13-0, F1B13-0 bits are enabled.
HPFAD bit should be “1”at PMADC bit = “1”.
HPF: HPF Enable in Filter block.
0: Disable
1: Enable (default)
When HPF bit is “0”, HPF block is bypassed (0dB).
When HPF bit is “1”, F1A13-0, F1B13-0 bits are enabled.
LPF: LPF Coefficient Setting Enable
0: Disable (default)
1: Enable
When LPF bit is “0”, LPF block is bypassed (0dB).
When LPF bit is “1”, F2A13-0, F2B13-0 bits are enabled.
Addr
1CH
1DH
1EH
1FH
Register Name
HPF Co-efficient 0
HPF Co-efficient 1
HPF Co-efficient 2
HPF Co-efficient 3
R/W
Default
D7
F1A7
0
F1B7
0
W
D6
F1A6
0
F1B6
0
W
D5
D4
D3
D2
D1
F1A5 F1A4 F1A3 F1A2 F1A1
F1A13 F1A12 F1A11 F1A10 F1A9
F1B5 F1B4 F1B3 F1B2 F1B1
F1B13 F1B12 F1B11 F1B10 F1B9
W
W
W
W
W
F1A13-0 bits = 0x1F16, F1B13-0 bits = 0x1E2B
D0
F1A0
F1A8
F1B0
F1B8
W
F1A13-0, F1B13-0: FIL1 (Wind-noise Reduction Filter) Coefficient (14bit x 2)
Default: F1A13-0 bits = 0x1F16, F1B13-0 bits = 0x1E2B
fc = 75Hz@fs = 8kHz, 150Hz@fs = 16kHz
Addr
20H
Register Name
BEEP Frequency
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
BPCNT
0
0
0
0
0
BPFR1 BPFR0
R/W
R
R
R
R
R
R/W
R/W
0
0
0
0
0
0
0
0
BPFR1-0: BEEP Signal Output Frequency Setting (Table 38 ~ Table 40)
Default: “00”
BPCNT: BEEP Signal Output Mode Setting
0: Once Output Mode (default)
1: Continuous Mode
In continuous mode, the BEEP signal is output while BPCNT bit is “1”.
In once output mode, the BEEP signal is output by only the frequency set with BPTM6-0 bits.
Rev. 0.6
- 73 -
2007/10