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TDA7540N датащи(PDF) 58 Page - STMicroelectronics

номер детали TDA7540N
подробное описание детали  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)
PDF  76 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7540N датащи(HTML) 58 Page - STMicroelectronics

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Software specification
TDA7540N
58/76
Table 36.
Addr 24 stereodecoder 1
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
1
only for testing (has to be set to 1)
0
not valid (only for testing)
1
Audio AM noise blanker fix threshold enable
1
only for testing (has to be set to 1)
0
Audio inverter OFF
1
Audio inverter ON
0
0
Audio noise blanking time 38µs
0
1
Audio noise blanking time 25.5µs
1
0
Audio noise blanking time 32µs
1
1
Audio noise blanking time 22µs
0
Stereodecoder VCO adjust minus
1
Stereodecoder no VCO adjust recommended
0
Stereodecoder VCO adjust plus
1
Stereodecoder no VCO adjustrecommended
Table 37.
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
1
0
Stereodecoder ingain = 1.25dB
1
1
Stereodecoder ingain = 0dB



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