[AK4679]
D0
Addr Register Name
73H NS On Level
R/W
D7
NSIAF1
R/W
1
D6
NSIAF0
R/W
0
D5
0
R
0
D4
D3
D2
D1
NSTHL4 NSTHL3 NSTHL2 NSTHL1 NSTHL0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Default
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
D7
NSOAF1
R/W
D6
NSOAF0
R/W
D5
0
R
0
D4
D3
D2
D1
D0
NSTHH4 NSTHH3 NSTHH2 NSTHH1 NSTHH0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Default
1
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
75H NS Reference Select
R/W
D7
0
R
0
D6
0
R
0
D5
0
R
0
D4
0
R
0
D3
D2
D1
D0
NSREF3 NSREF2 NSREF1 NSREF0
R/W
0
R/W
0
R/W
0
R/W
0
Default
NSREF3-0: Reference Value at Noise Suppression (Table 44)
Default: “0H” (-9dB)
Addr Register Name
D7
NSLA7
0
NSLB7
0
NSHA7
0
NSHB7
0
D6
NSLA6
0
NSLB6
0
NSHA6
0
NSHB6
0
D5
D4
NSLA4
D3
NSLA3
D2
NSLA2
D1
NSLA1
D0
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
NSLA5
NSLA13
NSLB5
NSLB13
NSHA5
NSHA13
NSHB5
NSHB13
R/W
NSLA0
NSLA8
NSLB0
NSLB8
NSHA0
NSHA8
NSHB0
NSHB8
R/W
NSLA12 NSLA11 NSLA10 NSLA9
NSLB4 NSLB3 NSLB2 NSLB1
NSLB12 NSLB11 NSLB10 NSLB9
NSHA4 NSHA3 NSHA2 NSHA1
NSHA12 NSHA11 NSHA10 NSHA9
NSHB4 NSHB3 NSHB2 NSHB1
NSHB12 NSHB11 NSHB10 NSHB9
R/W R/W R/W R/W
R/W
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
2013/02
- 179 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
