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TDA7541 数据表(PDF) 56 Page - STMicroelectronics

部件名 TDA7541
功能描述  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  76 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7541 数据表(HTML) 56 Page - STMicroelectronics

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Software specification
TDA7541
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Table 28.
Addr 12 AM IF NB (AM B1h)
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
AINENA
0
AM IF noise blanker disable
1
AM IF noise blanker enable
AINTH<4:1>
0
0
0
0
not recommended
--
--
-
0
0
1
0
not recommended
0
1
0
0
AM IF NB Threshold 50mV
0
1
0
1
AM IF NB Threshold 62.5mV
--
--
-
1
0
0
0
AM IF NB Threshold 100mV
--
--
-
1
1
1
1
AM IF NB Threshold 187.5mV
AINT<6:5>
0
0
AM IF NB Time 8µs
0
1
AM IF NB Time 11µs
1
0
AM IF NB Time 14µs
1
1
AM IF NB Time 17µs
IFAGCS
0
Enable AM IFAGC threshold shift down (check address6)
1
Disable AM IFAGC threshold shift down
Table 29.
Addr 13 XTAL adjust(80h)
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
XTAL<4:0>
0000
0
CLoad 0pF
0000
1
CLoad 0.75pF
0001
0
CLoad 1.5pF
0001
1
CLoad 2.25pF
0010
0
CLoad 3pF
---
-
-
-
1111
0
CLoad 22.5pF
1111
1
CLoad 23.25pF
SL<7:5>
0
0
0
S meter slope FM = 0.75V/20dB, AM = 1.61V/20dB
0
0
1
S meter slope FM = 0.80V/20dB, AM = 1.75V/20dB
0
1
0
S meter slope FM = 0.85V/20dB, AM = 1.89V/20dB
0
1
1
S meter slope FM = 0.90V/20dB, AM = 1.98V/20dB
1
0
0
S meter slope FM = 0.95V/20dB, AM = 2.04V/20dB
1
0
1
S meter slope FM = 1.0V/20dB, AM = 2.1V/20dB
1
1
0
S meter slope FM = 1.05V/20dB, AM = 2.15V/20dB
1
1
1
S meter slope FM = 1.1V/20dB, AM = 2.20V/20dB



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