ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 90

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

SQLT[7:0]
MS0952-E-00
Addr
92H
The Carrier FM quality SCS threshold is used by the stereo carrier search function to determine the quality of carrier 2.
This 8-bit threshold is zero extended to 13 bits by concatenating 5 zeros above its MSB and then it is compared against
the top 13 bits of the carrier 2 FM quality value
Carrier FM Quality Threshold (dB)= 20*log(SQlTh/8)
Carrier FM Quality SCS Threshold
Carrier2Quality[15:3]
Register Name
Default
SQLTh[7:0]
R/W
Table 108.Typical Carrier FM Quality Threshold Values
Carrier FM Quality
0
Threshold (dB)
13
Figure 30. Carrier 2 Quality Threshold
-INF
5
8
10.2
15
20
25
30
6
(Figure
[12:0]
[12:8]
[7:0]
compare
D7
>=
- 90 -
30,
Table
D6
(decimal)
SQLT
142
253
108).
16
26
45
80
0
D5
Carrier2QualityGood
SQLT[7:0]
00000000
D4
(default)
R/W
D3
D2
D1
[AK4141]
2008/05
D0