ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 90

• Manufacturer Part Number: ak4648
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

MS0625-E-01
Addr
0AH
0DH
Addr
Addr
Addr
0CH
08H
09H
07H
LMTH1-0: ALC Limiter Detection Level / Recovery Counter Reset Level (Table 27)
RGAIN1-0: ALC ALC Recovery GAIN Step (Table 31)
LMAT1-0: ALC Limiter ATT Step (Table 28)
ZELMN: Zero Crossing Detection Enable at ALC Limiter Operation
ALC: ALC Enable
REF7-0: Reference Value at ALC Recovery Operation. 0.375dB step, 242 Level (Table 32)
IVL7-0, IVR7-0: Input Volume; 0.375dB step, 242 Level (Table 35)
DVL7-0, DVR7-0: Output Digital Volume (Table 38)
Default: “00”
Default: “00”
Default: “00”
0: Enable (default)
1: Disable
0: ALC Disable (default)
1: ALC Enable
Default: “E1H” (+30.0dB)
Default: “E1H” (+30.0dB)
Default: “18H” (0dB)
Register Name
Lch Digital Volume Control
Rch Digital Volume Control
Register Name
ALC Mode Control 2
Register Name
Lch Input Volume Control
Rch Input Volume Control
Register Name
ALC Mode Control 1
LMTH1 bit is D6 bit of 0BH.
RGAIN1 bit is D7 bit of 0BH.
Default
Default
Default
Default
R/W
R/W
R/W
R/W
REF7
IVR7
DVR7
IVL7
DVL7
R/W
R/W
RD
D7
R/W
D7
D7
D7
0
0
1
1
0
REF6
IVL6
IVR6
DVR6
R/W
R/W
DVL6
R/W
D6
D6
RD
D6
D6
1
1
0
0
0
- 90 -
REF5
IVR5
IVL5
R/W
R/W
DVR5
DVL5
D5
D5
ALC
R/W
R/W
1
1
D5
D5
0
0
ZELMN
REF4
IVR4
IVL4
DVR4
R/W
R/W
DVL4
R/W
D4
D4
R/W
D4
D4
0
0
0
1
LMAT1
REF3
DVL3
DVR3
IVL3
IVR3
R/W
R/W
R/W
R/W
D3
D3
D3
D3
0
0
0
1
LMAT0
REF2
DVR2
IVL2
IVR2
DVL2
R/W
R/W
R/W
R/W
D2
D2
D2
D2
0
0
0
0
RGAIN0
REF1
DVL1
DVR1
IVL1
IVR1
R/W
R/W
R/W
R/W
D1
D1
D1
D1
0
0
0
0
[AK4648]
LMTH0
2007/06
DVR0
DVL0
REF0
IVL0
IVR0
R/W
R/W
R/W
R/W
D0
D0
D0
D0
0
1
1
0