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TDA7546 数据表(PDF) 45 Page - STMicroelectronics

部件名 TDA7546
功能描述  Multichip module for TMC tuner applications
PDF  68 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7546 数据表(HTML) 45 Page - STMicroelectronics

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TDA7546
Software specifications
45/68
0
Disable ISS filter to fixed bandwith (ISS80) in automatic
control
1
Enable ISS filter to fixed bandwith (ISS80) in automatic control
Table 22.
Addr 11 quality deviation detection (continued)
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
Table 23.
Addr 14 VCODIV/PLLREF
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
0
not valid (only for testing)
0
1
VCO frequency divided by 2
1
0
VCO frequency divided by 3
1
1
original VCO frequency
0
VCO” I” signal 0°C
1
VCO “I” signal 180°C
1
0
0
PLL reference frequency 50KHz
1
0
1
PLL reference frequency 25KHz
1
1
0
PLL reference frequency 10KHz
1
1
1
PLL reference frequency 9KHz
0
0
0
PLL reference frequency 2KHz
0
0
has to be set
Table 24.
Addr 15 FM AGC
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
0
RFAGC threshold V3-5TH = 82(74 ANT)dBμV
0
1
RFAGC threshold V3-5TH = 88(80 ANT)dBμV
1
0
RFAGC threshold V3-5TH = 92(84 ANT)dBμV
1
1
RFAGC threshold V3-5TH = 94(86 ANT)dBμV
0
0
IFAGC threshold V77TH = 86(60 ANT)dBμV
0
1
IFAGC threshold V77TH = 92(66 ANT)dBμV
1
0
IFAGC threshold V77TH = 96(70 ANT)dBμV
1
1
IFAGC threshold V77TH = 98(72 ANT)dBμV
0
0
0
KAGC threshold 80dB
μV
0
0
1
KAGC threshold 82dB
μV
0
1
0
KAGC threshold 84dB
μV



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