AK4679EG Datasheet, PDF (179/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
Addr Register Name
73H NS On Level
R/W
Default
D7
NSIAF1
R/W
1
D6
NSIAF0
R/W
0
D5
D4
D3
D2
D1
D0
0
NSTHL4 NSTHL3 NSTHL2 NSTHL1 NSTHL0
R
R/W
R/W
R/W
R/W R/W
0
0
0
0
0
0
NSTHL4-0: Noise Suppression Threshold Low Level Setting (Table 43)
Default: “00H” (-36dB)
NSIAF1-0: Moving Average Parameter Setting at Noise Suppression Off (Table 42)
Default: “10” (1024/fs)
Addr Register Name
74H NS Off Level
R/W
Default
D7
NSOAF1
R/W
1
D6
NSOAF0
R/W
0
D5
D4
D3
D2
D1
D0
0
NSTHH4 NSTHH3 NSTHH2 NSTHH1 NSTHH0
R
R/W
R/W
R/W
R/W R/W
0
0
0
0
0
0
NSTHH4-0: Noise Suppression Threshold High Level Setting (Table 47)
Default: “00H” (-36dB)
NSOAF1-0: Moving Average Parameter Setting at Noise Suppression On (Table 46)
Default: “10” (16/fs)
Addr Register Name
D7
D6
D5
75H NS Reference Select
0
0
0
R/W
R
R
R
Default
0
0
0
NSREF3-0: Reference Value at Noise Suppression (Table 44)
Default: “0H” (-9dB)
D4
D3
D2
D1
D0
0
NSREF3 NSREF2 NSREF1 NSREF0
R
R/W
R/W
R/W R/W
0
0
0
0
0
Addr Register Name
76H NS LPF Co-efficient 0
77H NS LPF Co-efficient 1
78H NS LPF Co-efficient 2
79H NS LPF Co-efficient 3
7AH NS HPF Co-efficient 0
7BH NS HPF Co-efficient 1
7CH NS HPF Co-efficient 2
7DH NS HPF Co-efficient 3
R/W
D7
NSLA7
0
NSLB7
0
NSHA7
0
NSHB7
0
R/W
D6
NSLA6
0
NSLB6
0
NSHA6
0
NSHB6
0
R/W
D5
NSLA5
NSLA13
NSLB5
NSLB13
NSHA5
NSHA13
NSHB5
NSHB13
R/W
D4
NSLA4
NSLA12
NSLB4
NSLB12
NSHA4
NSHA12
NSHB4
NSHB12
R/W
D3
NSLA3
NSLA11
NSLB3
NSLB11
NSHA3
NSHA11
NSHB3
NSHB11
R/W
D2
NSLA2
NSLA10
NSLB2
NSLB10
NSHA2
NSHA10
NSHB2
NSHB10
R/W
D1
NSLA1
NSLA9
NSLB1
NSLB9
NSHA1
NSHA9
NSHB1
NSHB9
R/W
D0
NSLA0
NSLA8
NSLB0
NSLB8
NSHA0
NSHA8
NSHB0
NSHB8
R/W
NSLA13-0, NSLB13-0: Noise Suppression LPF Coefficient (14bit x 2)
Default: “0000H”
NSHA13-0, NSHB13-0: Noise Suppression HPF Coefficient (14bit x 2)
Default: “0000H”
MS1402-E-06
- 179 -
2013/02