AK4695 Datasheet, PDF (93/107 Pages) Asahi Kasei Microsystems – 24bit 4ch CODEC with MIC/HP/SPK/LINE-AMP

[AK4695]
Addr
3FH
Register Name
DVLC Filter Select
R/W
Default
D7
DLLPF1
R/W
0
D6
DLLPF0
R/W
0
D5
D4
DMHPF1 DMHPF0
R/W
R/W
0
0
D3
DMLPF1
R/W
0
D2
DMLPF0
R/W
0
D1
DHHPF1
R/W
0
D0
DHHPF0
R/W
0
DHHPF1-0: DVLC High Frequency Range HPF Coefficient Setting Enable (Table 56)
00: Disable (default)
01: 1st order HPF
10: 2nd order HPF
11: N/A (Not Available)
When DHHPF1-0 bits are “01” or “10”, the settings of DHHA13-0 and DHHB13-0 bits are enabled. When
DHHPF1-0 bits are “00”, the HPF block outputs “0” data.
DMLPF1-0: DVLC Middle Frequency Range LPF Coefficient Setting Enable (Table 52)
00: Disable (default)
01: 1st order LPF
10: 2nd order LPF
11: N/A (Not Available)
When DMLPF1-0 bits are “01” or “10”, the settings of DMLA13-0 and DMLB13-0 bits are enabled. When
DMLPF1-0 bits are “00”, the audio data passes DVLC middle frequency range of the LPF by 0dB gain.
DMHPF1-0: DVLC Middle Frequency Range HPF Coefficient Setting Enable (Table 51)
00: Disable (default)
01: 1st order HPF
10: 2nd order HPF
11: N/A (Not Available)
When DMHPF1-0 bits are “01” or “10”, the setting of DMHA13-0 and DMHB13-0 bits are enabled. When
DMHPF1-0 bits are “00”, the audio data passes DVLC middle frequency range of the HPF by 0dB gain.
DLLPF1-0: DVLC Low Frequency Range LPF Coefficient Setting Enable (Table 47)
00: Disable (default)
01: 1st order LPF
10: 2nd order LPF
11: N/A (Not Available)
When DLLPF1-0 bits are “01” or “10”, the settings of DLLA13-0 and DLLB13-0 bits are enabled. When
DLLPF1-0 bits are “00”, LPF block outputs “0” data.
Addr
40H
Register Name
DVLC Mode Control
R/W
Default
D7
D6
D5
D4
D3
D2
DVRGAIN2 DVRGAIN1 DVRGAIN0 DVLMAT2 DVLMAT1 DVLMAT0
R/W
R/W
R/W
R/W
R/W
R/W
0
1
1
0
1
1
D1
DAF1
R/W
1
DAF1-0: Moving Avarage Parameter Setting for DVLC (Table 60)
Default: “11” (Default: 2048/fs)
DVLMAT2-0: DVLC Attenuation Speed Setting (Table 61)
Default: “011”
DVRGAIN2-0: DVLC Recovery Speed Setting (Table 62)
Default: “011”
D0
DAF0
R/W
1
MS1463-E-01
- 93 -
2014/12