TDA7541 Datasheet, PDF (64/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Software specification
Table 37. Addr 21 SD Quality (FFM 7Ah, AM FAh)
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
QDC<1:0>
0 0 Quality detector coefficient a=0,6
0 1 Quality detector coefficient a=0,75
1 0 Quality detector coefficient a=0,9
1 1 Quality detector coefficient a=1,05
QNG<3:2>
00
Quality noise gain =6dB
01
10
Quality noise gain =9dB
Quality noise gain =12dB
11
Quality noise gain =15dB
NBDC<5:4>
00
Noise blanker deviation adjust 2.0V
01
10
Noise blanker deviation adjust 1.5V
Noise blanker deviation adjust 1.0V
11
Noise blanker deviation adjust “OFF”
NBFC<7:6>
0
0
Noise blanker field strength adjust 2.0V
0
1
1
0
Noise blanker field strength adjust 1.6V
Noise blanker field strength adjust 1.4V
1
1
Noise blanker field strength adjust “OFF”
TDA7541
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