AK4679EG Datasheet, PDF (166/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
Addr
15H
Register Name
ALC Timer Select
R/W
Default
D7
D6
D5
D4
D3
D2
D1
FR RFST1 RFST0 WTM2 WTM1 WTM0 ZTM1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
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
D0
ZTM0
R/W
0
Addr
16H
Register Name
ALC Mode Control
R/W
Default
D7
LFST
R/W
0
D6
ZELMN
R/W
0
D5
LMAT1
R/W
0
D4
LMAT0
R/W
0
D3
RGAIN1
R/W
0
D2
RGAIN0
R/W
0
D1
LMTH1
R/W
0
D0
LMTH0
R/W
0
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
- 166 -
2013/02