TDA7405_04 Datasheet, PDF (50/57 Pages) STMicroelectronics – EQUALIZER CARRADIO SIGNAL PROCESSOR

TDA7405
Table 29. Stereodecoder (22)
MSB
LSB
D₇
D₆
D₅
D₄
D₃
D₂
D₁
D₀
FUNCTION
0 STD Unmuted
1 STD Muted
0
0
0
1
1
0
1
1
IN-Gain 11dB
IN-Gain 8.5dB
IN-Gain 6dB
IN-Gain 3.5dB
0
Input AM-Pin
1
Input MPX-Pin
0
Forced MONO
1
MONO/STEREO switch automatically
0
Pilot Threshold HIGH
1
Pilot Threshold LOW
0
0
0
1
1
0
1
1
Deemphasis 50µs (37.5µs¹)
Deemphasis 62.5µs (46.9µs¹)
Deemphasis 75µs (56.3µs¹)
Deemphasis 100µs (75µs¹)
Note: 1. If Deemphasis-Shift enabled (Subaddr.26/Bit7 = 0)
Table 30. Noiseblanker I (23)
MSB
LSB
D₇
D₆
D₅
D₄
D₃
D₂
D₁
D₀
FUNCTION
0 Noiseblanker off
1 Noiseblanker on
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Low Threshold 65mV
Low Threshold 60mV
Low Threshold 55mV
Low Threshold 50mV
Low Threshold 45mV
Low Threshold 40mV
Low Threshold 35mV
Low Threshold 30mV
0
0
0
1
1
0
1
1
Noise Controlled Threshold 320mV
Noise Controlled Threshold 260mV
Noise Controlled Threshold 200mV
Noise Controlled Threshold 140mV
0
0
0
1
1
0
1
1
Overdeviation Adjust 2.8V
Overdeviation Adjust 2.0V
Overdeviation Adjust 1.2V
Overdeviation Detector OFF
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