TDA7540B Datasheet, PDF (58/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

Software specification
TDA7540B
Table 38. Addr 27 Stereodecoder 4 (continued)
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
00
Start level High Cut at 42% REF5V
01
10
Start level High Cut at 50% REF5V
Start level High Cut at 58% REF5V
11
Start level High Cut at 66% REF5V
00
Stop level High Cut at 11% VHCH
01
10
Stop level High Cut at 18.3% VHCH
Stop level High Cut at 25.7% VHCH
11
Stop level High Cut at 33% VHCH
0
Strong multipath influence on peak discharge OFF
1
Strong multipath influence on peak discharge ON
Table 39. Addr 28 Stereodecoder 5
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0 0 0 Stereoblend control at 29% REF5V
0 0 1 Stereoblend control at 33% REF5V
0 1 0 Stereoblend control at 38% REF5V
0 1 1 Stereoblend control at 42% REF5V
1 0 0 Stereoblend control at 46% REF5V
1 0 1 Stereoblend control at 50% REF5V
1 1 0 Stereoblend control at 54% REF5V
1 1 1 Stereoblend control at 58% REF5V
00
Audio noise blanker field strength adjust 2,0V
01
Audio noise blanker field strength adjust 1,6V
10
Audio noise blanker field strength adjust 1,4V
11
00
Audio noise blanker field strength adjust OFF
Quality detector coefficient a=0,6
01
Quality detector coefficient a=0,75
10
Quality detector coefficient a=0,9
11
Quality detector coefficient a=1,05
0
Multipath influence on peak discharge OFF
1
Multipath influence on peak discharge ON (-1V/ms)
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