AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 70

• Manufacturer Part Number: AK4635
• Description: 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

Rev. 0.6
Addr
07H
Addr
08H
LMTH1-0: ALC Limiter Detection Level / Recovery Waiting Counter Reset Level
RGAIN1-0: ALC Recovery GAIN Step
LMAT1-0: ALC Limiter ATT Step
ZELMN: Zero crossing detection enable at ALC Limiter operation
ALC1: ALC of recoding path Enable
ALC2: ALC2 of playback path Enable
LFST: Limiter function of ALC when the output was bigger than Fs.
IREF7-0: Reference value at ALC Recovery operation for recoding. (0.375dB step, 242 Level)
RGAIN1 bit is located at D7 bit of 0BH. Default: “00”
Default: “00”
1: When output of ALC is bigger than FS, VOL value is changed instantly.
LMTH1 bit is located at D6 bit of 0BH. Default: “01”
0: Enable (default)
1: Disable
0: Disable (default)
1: Enable
0: Disable (default)
1: Enable
0: The volume value is changed at zero crossing or timeout. (default)
Register Name
ALC Mode Control 1
Register Name
ALC Mode Control 2
Default: “C5H” (+19.5dB)
Default
Default
R/W
R/W
LFST
IREF7
R/W
D7
R/W
(Table
0
D7
1
(Table
26)
ALC2
IREF6
R/W
R/W
D6
29)
D6
0
1
- 70 -
ALC1
IREF5
R/W
D5
R/W
0
D5
0
ZELMN
IREF4
R/W
D4
R/W
D4
0
0
LMAT1
IREF3
R/W
R/W
D3
D3
0
0
(Table
LMAT0
IREF2
R/W
R/W
D2
D2
0
25)
1
(Table
RGAIN0
IREF1
R/W
R/W
D1
D1
0
0
30)
[AK4635]
LMTH0
IREF0
2007/10
R/W
R/W
D0
D0
1
1