ASAHI KASEI
[AK4644]
Addr Register Name
D7
DVTM
0
D6
WTM2
0
D5
ZTM1
0
D4
ZTM0
0
D3
WTM1
0
D2
WTM0
0
D1
RFST1
0
D0
RFST0
0
06H
Timer Select
Default
RFST1-0: ALC First recovery Speed (See Table 34)
Default: “00”(4times)
WTM2-0: ALC Recovery Waiting Period (See Table 31.)
Default: “000” (128/fs)
ZTM1-0: ALC Limiter/Recovery Operation Zero Crossing Timeout Period (See Table 30.)
Default: “00” (128/fs)
DVTM: Digital Volume Transition Time Setting (See Table 40.)
0: 1061/fs (Default)
1: 256/fs
This is the transition time between DVL/R7-0 bits = 00H and FFH.
Addr Register Name
07H ALC Mode Control 1
Default
D7
0
0
D6
0
0
D5
ALC
0
D4
D3
D2
D1
RGAIN0
0
D0
LMTH0
0
ZELMN LMAT1 LMAT0
0
0
0
LMTH1-0: ALC Limiter Detection Level / Recovery Counter Reset Level (See Table 28.)
Default: “00”
LMTH1 bit is D6 bit of 0BH.
RGAIN1-0: ALC Recovery GAIN Step (See Table 32.)
Default: “00”
RGAIN1 bit is D7 bit of 0BH.
LMAT1-0: ALC Limiter ATT Step (See Table 29.)
Default: “00”
ZELMN: Zero Crossing Detection Enable at ALC Limiter Operation
0: Enable (Default)
1: Disable
ALC: ALC Enable
0: ALC Disable (Default)
1: ALC Enable
Addr Register Name
08H ALC Mode Control 2
Default
D7
REF7
1
D6
REF6
1
D5
REF5
1
D4
REF4
0
D3
REF3
0
D2
REF2
0
D1
REF1
0
D0
REF0
1
REF7-0: Reference Value at ALC Recovery Operation. 0.375dB step, 242 Level (See Table 33.)
Default: “E1H” (+30.0dB)
MS0477-E-01
2006/10
- 71 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
