[AK4679]
Addr Register Name
15H ALC Timer Select
R/W
D7
FR
R/W
0
D6
RFST1
R/W
0
D5
RFST0
R/W
0
D4
WTM2
R/W
0
D3
WTM1
R/W
0
D2
WTM0
R/W
0
D1
ZTM1
R/W
0
D0
ZTM0
R/W
0
Default
ZTM1-0: ALC Limiter/Recovery Operation Zero Crossing Timeout Period (Table 30)
Default: “00” (128/fs)
WTM2-0: ALC Recovery Waiting Period (Table 31)
Default: “000” (128/fs)
RFST1-0: ALC Fast recovery Speed (Table 34)
Default: “00” (4times)
FR: Fast recovery Enable
0: Enable (default)
1: Disable
Addr Register Name
16H ALC Mode Control
R/W
D7
LFST
R/W
0
D6
D5
D4
D3
D2
D1
D0
ZELMN LMAT1 LMAT0 RGAIN1 RGAIN0 LMTH1 LMTH0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Default
LMTH1-0: ALC Limiter Detection Level / Recovery Counter Reset Level (Table 28)
Default: “00”
RGAIN1-0: ALC Recovery GAIN Step (Table 32)
Default: “00”
LMAT1-0: ALC Limiter ATT Step (Table 29)
Default: “00”
ZELMN: Zero Crossing Detection Enable at ALC Limiter Operation
0: Enable (default)
1: Disable
LFST: ALC Limiter operation when the output level exceeds FS(full-scale) level.
0: The volume is changed at zero crossing or zero crossing time out (default)
1: When output of ALC is larger than FS, IVL/IVR values are changed immediately (1/fs).
MS1402-E-06
2013/02
- 166 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
