TDA7421N Datasheet, PDF (32/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

TDA7421N
7.5 AM STOP STATION / AM AGC1 (subaddress 03H)
MSB
LSB
FUNCTION
ASS3 ASS2 ASS1 ASS0 AAGN1 AAGN0 AAGW1 AAGW0
AM
AM
AM
AM AMnagc AMnagc AMwagc AMwagc AM WAGC THRESHOLD
stopstation stopstation stopstation stopstation MSB
LSB
MSB
LSB
MSB
LSB
0
0 Minimum sensitivity
X
X
1
1 Maximum sensitivity
all comb. allowed
AM NAGC THRESHOLD
0
0
Minimum sensitivity
X
X
1
1
Maximum sensitivity
all comb. allowed
AM STOP STATION THRESHOLD
0
0
0
0
Maximum sensitivity
X
X
X
X
1
1
1
1
Minimum sensitivity
all combinations allowed
7.6 IFT1/IFT2 (subaddress 04H)
MSB
LSB
FUNCTION
T2A3 T2A2 T2A1 T2A0 T1A3 T1A2 T1A1 T1A0
IFT2adju IFT2adju IFT2adju IFT2adju IFT1adju IFT1adju IFT1adju IFT1adju ADJUSTMENT CAPACITOR
st MSB
st
st
st LSB st MSB
st
st
st LSB
0
0
0
0 15Cift1
0
1
1
1 8Cift1
1
0
1
0 4Cift1
1
1
0
1 2Cift1
1
1
1
0 Cift2 ( = 380pF)
1
1
1
10
all combinations allowed
0
0
0
0
0
0
0
0
1
Cift1 ( = 1.57pF)
0
0
1
0
2Cift2
0
1
0
0
4Cift2
1
0
0
0
8Cift2
1
1
1
1
15Cift2
all combinations allowed
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