ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 46

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

ALC1
WTM1[2:0]: ALC1 Recovery Waiting Period
ZTM1[1:0]: ALC1 Zero Crossing Timeout Period
RFST1[1:0]
MS0952-E-00
Addr
26H
WTM12
0
0
0
0
1
1
1
1
: ALC1 Fast Recovery Speed
WTM1[2-0] bits set a period of recovery operation when no limiter operation occurs during ALC1 operation.
Default= “000” (128/fs).
At ALC1 recovery operation, the gain changes only when zero crossing or timeout. Default= “00” (128/fs).
Default: “00”(x 4 speed)
ZTM11
Default
Register Name
0
0
1
1
Timer Select
R/W
WTM11
0
0
1
1
0
0
1
1
RFST11 bit
ZTM10
0
1
0
1
Table 26. ALC1 Fast Recovery Speed (N/A: NOT available)
0
0
1
1
WTM10
Table 24. ALC Recovery Operation Waiting Period
0
1
0
1
0
1
0
1
Table 25. ALC1 Zero Crossing Timeout Period
1024/fs
128/fs
256/fs
512/fs
R/W
D7
0
0
RFST10 bit
16384/fs
1024/fs
2048/fs
4096/fs
8192/fs
128/fs
256/fs
512/fs
ALC1 Zero Crossing Timeout Period
0
1
0
1
R/W
D6
0
ALC Recovery Operation Waiting Period
32kHz
16.0ms
32.0ms
WTM1[2:0]
4.0ms
8.0ms
- 46 -
128.0ms
256.0ms
512.0ms
R/W
32kHz
D5
16.0ms
32.0ms
64.0ms
0
4.0ms
8.0ms
Fast Recovery Speed
44.1kHz
R/W
x 16
D4
11.6ms
23.2ms
N/A
x 4
x 8
0
2.9ms
5.8ms
44.1kHz
185.8ms
371.5ms
11.6ms
23.2ms
46.4ms
92.9ms
2.9ms
5.8ms
R/W
D3
ZTM1[1:0]
0
48kHz
10.7ms
21.3ms
(default)
2.7ms
5.3ms
R/W
D2
170.7ms
341.3ms
48kHz
0
10.7ms
21.3ms
42.7ms
85.3ms
2.7ms
5.3ms
(default)
R/W
D1
0
RFST1[1:0]
(default)
[AK4141]
R/W
2008/05
D0
0