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TDA7705 Fiches technique(PDF) 31 Page - STMicroelectronics

No de pièce TDA7705
Description  Highly integrated tuner for AM/FM car radio
PDF  42 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7705 Fiches technique(HTML) 31 Page - STMicroelectronics

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TDA7705
Front-end processing
Doc ID 15938 Rev 9
31/42
Table 23.
Register 0x01
Register number
Register definition
MSB
LSB
23 22 21 20 19 18 17 16 15 14 13 12 11 10
9876543210
FM mixer input selector
0
1
1
0
input #1
1
0
0
1
input #2
FM mixer gain
0high
1low
FM AGC time constant
0
normal
1
fast
FM AGC output mode
00
normal
01
constant 15 mA
10
constant 1 mA
Table 24.
Register 0x02
Register number
Register definition
MSB
LSB
23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
FM RF AGC threshold @
mixin
0
0 87 dBµV
0
1 89 dBµV
1
0 91 dBµV
1
1 93 dBµV
FM iF AGC threshold @
IFADC in
0
0
120 dBµV
0
1
122 dBµV
1
0
124 dBµV
Tuning DAC enable
0off
1on
Tuning DAC programming(1)
000
00
00
0
0
000
00
00
1
1
…… …… ……… …
…
111
11
11
0
510
111
11
11
1
511
1.
Normally handled by tuner drivers.



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