ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 50

• Manufacturer Part Number: ak4141
• Description: Nicam/a2/eia-j Digital Stereo Decoder
• Manufacturer: AKM Semiconductor, Inc.

LMTH2[1:0]: ALC2 Limiter Detection Level / Recovery Waiting Counter Reset Level
LMAT2[1:0]: ALC2 Limiter ATT Step
RGAIN21[1:0]: ALC2 Recovery GAIN Step
ZELMN2: Enable zero crossing detection at ALC2 Limiter operation
ALC2: ALC2 Enable
MS0952-E-00
Addr
2AH
Default: “00”
Default: “00”
Default: “00”
0: Enable (default)
1: Disable
0: ALC Disable (default)
1: ALC Enable
LMTH21
0
0
1
1
ALC Mode Control 1
LMAT21
Default
Register Name
R/W
0
0
1
1
Table 34. ALC2 Limiter Detection Level / Recovery Waiting Counter Reset Level
LMTH20
0
1
0
1
LMAT20
RGAIN21
0
1
0
1
0
0
1
1
ALC Output ≥ −2.5dBFS
ALC Output ≥ −4.1dBFS
ALC Output ≥ −6.0dBFS
ALC Output ≥ −8.5dBFS
Limiter Detection Level
ALC2
R/W
ALC2 Output
D7
Table 36. ALC2 Recovery GAIN Step
0
RGAIN20
≥ LMTH
Table 35. ALC2 Limiter ATT Step
0
1
0
1
1
2
2
1
ZELMN
R/W
D6
2
0
ALC2 Output
- 50 -
1 step
2 step
3 step
4 step
≥ LMTH
ALC2 Limiter ATT Step
R/W
D5
RGAIN2[1:0]
0
Recovery Waiting Counter Reset Level
GAIN STEP
1
2
4
2
−2.5dBFS > ALC Output ≥ −4.1dBFS
−4.1dBFS > ALC Output ≥ −6.0dBFS
−6.0dBFS > ALC Output ≥ −8.5dBFS
−8.5dBFS > ALC Output ≥ −12dBFS
R/W
D4
0
0.375dB
0.750dB
1.125dB
1.500dB
ALC2 Output
≥ LMTH
1
2
4
4
R/W
D3
LMAT2[1:0]
0
(default)
ALC2 Output
R/W
≥ LMTH
D2
0
1
2
8
8
R/W
D1
0
LMTH2[1:0]
(default)
(default)
[AK4141]
R/W
2008/05
D0
0