AK4679EG Datasheet, PDF (178/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
Addr Register Name
70H DRC Mode Control
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
DLMAT2 DLMAT1 DLMAT0 DRGAIN1 DRGAIN0 DRCC1 DRCC0
R
R/W
R/W
R/W
R/W
R/W
R/W R/W
0
0
0
0
0
0
0
0
DRCC1-0: DRC Enable (Table 65)
00: Disable (default)
01: Low
10: Middle
11: High
When DRCC1-0 bits are “00”, DRC is through (0dB).
DRGAIN1-0: DRC Recovery Speed Setting (Table 67)
Default: “00”
DLMAT2-0: DRC ATT Speed Setting (Table 66)
Default: “000”
Addr Register Name
71H NS Control
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
DRCM1 DRCM0
0
NSLPF NSHPF NSCE
R
R
R/W
R/W
R
R/W
R/W R/W
0
0
0
0
0
0
0
0
NSCE: Noise Suppression Enable
0: Disable (default)
1: Enable
When NSCE bit is “0”, Noise Suppression is through (0dB).
NSHPF: HPF for Noise Suppression Coefficient Setting Enable
0: Disable (default)
1: Enable
When NSHPF bit is “1”, the settings of NSHA13-0 and NSHB13-0 bits are enabled. When NSHPF bit is “0”,
HPF block is through (0dB).
NSLPF: LPF for Noise Suppression Coefficient Setting Enable
0: Disable (default)
1: Enable
When NSLPF bit is “1”, the settings of NSLA13-0 and NSLB13-0 bits are enabled. When NSLPF bit is “0”,
LPF block is through (0dB).
DRCM1-0: DRC Input Signal Setting (Table 41)
Default: “00” (L = Lch, R = Rch)
Addr Register Name
D7
72H NS Gain & ATT Control
0
R/W
R
Default
0
D6
D5
D4
D3
D2
D1
D0
NSGAIN2 NSGAIN1 NSGAIN0
0
NSATT2 NSATT1 NSATT0
R/W
R/W
R/W
R
R/W
R/W R/W
0
0
1
0
0
0
1
NSATT2-0: Noise Suppression ATT Speed Setting (Table 45)
Default: “001”
NSGAIN2-0: Noise Suppression Recovery Speed Setting (Table 48)
Default: “001”
MS1402-E-06
- 178 -
2013/02