TDA7540B Datasheet, PDF (55/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

TDA7540B
Software specification
Table 33. Addr 22 AM IF Noise Blanker
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
0 0 0 0 AINBT 0mV
0 0 0 1 AINBT 12.5mV
0 0 1 0 AINBT 25mV
-
-
-
--
1 1 1 1 AINBT 187.5mV
00
AINBD “ON”
01
AINBD 4.0V
10
AINBD 3.2V
11
AINBD “OFF”
00
AINT 8µs
01
AINT 11µs
10
AINT 14µs
11
AINT 17µs
Function
Table 34. Addr 23 Switch Control
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0 S1 LOW output voltage
1 S1 HIGH output voltage
0
S1 emitter output available
1
S1 open collector output available
0
S2 LOW output voltage
1
S2 HIGH output voltage
0
S2 emitter output available
1
S2 open collector output available
0000
SSTOP=IFC (IF counter status)
0001
SSTOP= H if IFC=H&FSU>0.89V
0010
0011
SSTOP= H if IFC=H&FSU>1.16V
SSTOP= H if IFC=H&FSU>1.43V
-
-
-
-
1111
SSTOP= H if IFC=H&FSU>4.67V
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