AK4634 Datasheet, PDF (69/77 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

[AK4634]
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
When HPFAD bit is “0”, HPFAD block is bypassed (0dB).
1: Enable (default)
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
When HPF bit is “0”, HPF block is bypassed (0dB).
1: Enable (default)
When HPF bit is “1”, F1A13-0, F1B13-0 bits are enabled.
LPF: LPF Coefficient Setting Enable
0: Disable (default)
When LPF bit is “0”, LPF block is bypassed (0dB).
1: Enable
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 output mode, the BEEP signal is output by only the frequency set with BPTM6-0 bits.
Rev. 0.5
- 69 -
2007/10