TDA7540B Datasheet, PDF (53/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

TDA7540B
Software specification
Table 29. Addr 18 S-Meter Slider
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0 0 0 0 S meter slider offset SL=0dB
0 0 0 1 S meter offset SL=1dB
0 0 1 0 S meter offset SL=2dB
-
-
-
--
1 1 1 1 S meter offset SL=15dB
0
S meter offset -SL
1
S meter offset +SL
0
S Meter slope 1V/decade
1
S meter slope 1.5V/decade
0
Overdeviation correction current max=45µA
1
Overdeviation correction current max=90µA
0
Overdeviation correction “OFF”
1
Overdeviation correction “ON”
Table 30. Addr 19 IF GAIN/XTAL Adjust
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0 Xtal amplitude limitation disable
1 Xtal amplitude limitation enable
00
IF1 gain1 9dB
01
IF1 gain1 12dB
10
IF1 gain1 15dB
11
IF1 gain1 18dB
00000
00001
00010
00011
00100
-
-
-
-
-
C_Load 0pF
C_Load 0.75pF
C_Load 1.5pF
C_Load 2.25pF
C_Load 3pF
-
11111
C_Load 23.25pF
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