AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 73

• Manufacturer Part Number: AK4635
• Description: 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

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