[AK4646]
Addr Register Name
08H ALC Mode Control 2
R/W
D7
IREF7
R/W
1
D6
IREF6
R/W
1
D5
IREF5
R/W
1
D4
IREF4
R/W
0
D3
IREF3
R/W
0
D2
IREF2
R/W
0
D1
IREF1
R/W
0
D0
IREF0
R/W
1
Default
REF7-0: Reference Value at ALC Recovery Operation. 0.375dB step, 242 Level (Table 28)
Default: “E1H” (+30.0dB)
Addr Register Name
09H Lch Input Volume Control
0CH Rch Input Volume Control
R/W
D7
IVL7
IVR7
R/W
1
D6
IVL6
IVR6
R/W
1
D5
IVL5
IVR5
R/W
1
D4
IVL4
IVR4
R/W
0
D3
IVL3
IVR3
R/W
0
D2
IVL2
IVR2
R/W
0
D1
IVL1
IVR1
R/W
0
D0
IVL0
IVR0
R/W
1
Default
IVL7-0, IVR7-0: Input Digital Volume; 0.375dB step, 242 Level (Table 34)
Default: “E1H” (+30.0dB)
Addr Register Name
0AH Lch Digital Volume Control
25H Rch Digital Volume Control
R/W
D7
OVL7
OVR7
R/W
1
D6
OVL6
OVR6
R/W
0
D5
OVL5
OVR5
R/W
0
D4
OVL4
OVR4
R/W
1
D3
OVL3
OVR3
R/W
0
D2
OVL2
OVR2
R/W
0
D1
OVL1
OVR1
R/W
0
D0
OVL0
OVR0
R/W
1
Default
OVL7-0, OVR7-0: Output Digital Volume (Table 35)
Default: “91H” (0dB)
Addr Register Name
0BH ALC Mode Control 3
R/W
D7
RGAIN1
R/W
D6
LMTH1
R/W
0
D5
OREF5
R/W
1
D4
OREF4
R/W
0
D3
OREF3
R/W
1
D2
OREF2
R/W
0
D1
OREF1
R/W
0
D0
OREF0
R/W
0
Default
0
OREF5-0: Reference value at Playback ALC Recovery Operation. 0.375dB step, 50 Level (Table 29)
Default: “28H” (+6.0dB)
LMTH1: ALC Limiter Detection Level / Recovery Counter Reset Level (Table 23)
RGAIN1: ALC Recovery GAIN Step (Table 27)
Addr Register Name
D7
D6
D5
D4
D3
D2
D1
D0
0DH
VOL7
VOL6
VOL5
VOL4
VOL3
VOL2
VOL1
VOL0
ALC Volume
R/W
R
-
R
-
R
-
R
-
R
-
R
-
R
-
R
-
Default
VOL7-0: Current ALC volume value; 0.375dB step, 242 Level. Read operation only (Table 31)
MS0557-E-05
2011/01
- 59 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
