AK4691EG AKM [Asahi Kasei Microsystems], AK4691EG Datasheet - Page 71

• Manufacturer Part Number: AK4691EG
• Description: 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

MS0672-E-00
Addr
0CH
Addr
Addr
0AH
0BH
WTM2-0: ALC Recovery Waiting Period
ZTM1-0: ALC Limiter/Recovery Operation Zero Crossing Timeout Period
FDTM1-0: FADEIN/OUT Cycle Setting
LMAT1-0: ALC Limiter ATT Step
RGAIN1-0: ALC Recovery GAIN Step
FDATT1-0: FADEIN/OUT ATT Step Setting
ZELMN: Zero Crossing Detection Enable at ALC Limiter Operation
LMTH1-0: ALC Limiter Detection Level / Recovery Counter Reset Level
GSEL: Select IVOL Gain
RFST1-0: ALC First limiter/recovery Speed
LFST: Setting of Limiter operation when input signal exceeds full-scale level
Default: “100” (2048/fs)
Default: “00” (128/fs)
Default: “01” (2048/fs)
Default: “00”
Default: “00”
Default: “00”
0: Enable (default)
1: Disable
Default: “00”
0: MIC (default)
1: LINE
Default: “00” (4 times)
0: IVL/R values are changed at zero-crossing detection or zero-crossing timeout. (default)
1: IVL/R values are immediately (period: 1/fs) attenuated by 1step when ALC output signal exceeds full-scale level.
Register Name
ALC Mode Control 2
Register Name
Timer Select
Register Name
ALC Mode Control 1
Default
R/W
Default
Default
R/W
R/W
RD
D7
FDTM1
0
0
R/W
(Table
RD
D7
D7
0
0
0
(Table
(Table
(Table
27)
(Table
ZELMN
FDTM0
RD
D6
0
0
(Table
R/W
R/W
D6
D6
30)
1
0
34)
29)
32)
35)
- 71 -
FDATT1
LFST
R/W
R/W
D5
RD
D5
D5
0
0
0
0
FDATT0
RFST1
ZTM1
R/W
R/W
R/W
D4
D4
D4
0
0
0
(Table
(Table
RGAIN1
RFST0
ZTM0
R/W
R/W
R/W
D3
D3
D3
0
0
0
26)
28.)
RGAIN0
WTM2
GSEL
R/W
R/W
R/W
D2
D2
D2
1
0
0
LMAT1
LMTH1
WTM1
R/W
R/W
R/W
D1
D1
D1
0
0
0
[AK4691]
LMAT0
LMTH0
WTM0
2007/11
R/W
R/W
R/W
D0
D0
D0
0
0
0