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TDA7540B датащи(PDF) 56 Page - STMicroelectronics

номер детали TDA7540B
подробное описание детали  AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)
PDF  75 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7540B датащи(HTML) 56 Page - STMicroelectronics

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Software specification
TDA7540B
56/75
Table 35.
Addr 24 Stereodecoder 1
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Test mode stereodecoder and audioprocessor “ON”
1
Test mode stereodecoder and audioprocessor “OFF”
0
Audio AM noise blanker fix threshold disable
1
Audio AM noise blanker fix threshold enable
0
Fast clock for testing audioprocessor “ON”
1
Fast clock for testing audioprocessor “OFF”
0
Audio inverter OFF
1
Audio inverter ON
0
0
Audio noise blanking time (FM = 38
µs, AM = 1.2 ms)
0
1
Audio noise blanking time (FM = 25,5
µs, AM = 0.8 ms)
1
0
Audio noise blanking time (FM = 32
µs, AM = 1.0 ms)
1
1
Audio noise blanking time (FM = 22
µs, AM = 0.64 ms)
0
Stereodecoder VCO adjust minus
1
Stereodecoder no VCO adjust
0
Stereodecoder VCO adjust plus
1
Stereodecoder no VCO adjust
Table 36.
Addr 25 Stereodecoder 2
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Stereo decoder mute disable
1
Stereo decoder mute enable
0
Stereo decoder “ON” if muted
1
Stereo decoder “OFF” if muted
0
Forced MONO, must be set in AM
1
MONO/STEREO switch automatically
0
Noise blanker peak charge current low
1
Noise blanker peak charge current high
0
Pilot threshold high
1
Pilot threshold low
0
Deemphasis 50µs
1
Deemphasis 75µs
0
0
Stereodecoder ingain = 3,75dB
0
1
Stereodecoder ingain = 2,5dB



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