TDA7421N Datasheet, PDF (31/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

TDA7421N
7.3 FM STOP STATION / FM IF AGC (subaddress 01H)
MSB
LSB
FUNCTION
FAG2
FAG1 FAG0 FSS4 FSS3 FSS2 FSS1 FSS0
FM
ifagc
MSB
FM
ifagc
FM
ifagc
LSB
FM
FM
FM
FM
FM FM STOP STATION THRESHOLD
stopstation stopstation stopstation stopstation stopstation
MSB
LSB
0
0
0
0
0 Maximum sensitivity
X
X
X
X
X
1
1
1
1
1 Minimum sensitivity
all combinations allowed
FM IF AGC THRESHOLD
0
0
0
Maximum sensitivity
X
X
X
1
1
0
Minimum sensitivity
1
1
1
Keyed AGC disabled
all combinations allowed
7.4 FM SMETER SLIDER\IF2 AMPLIFIER (subaddress 02H)
MSB
FSL4 FSL3 FSL2 FSL1 FSL0 IF2A1 IF2A0
FMsmeter FMsmeter FMsmeter FMsmeter FMsmeter AM
slider slider slider slider sliderr if2Amp
MSB
LSB
MSB
AM
if2Amp
LSB
0
0
0
0
0
0
0
0
0
1
X
X
X
X
X
1
1
1
1
1
all combinations allowed
0
0
0
1
1
0
1
1
LSB
FUNCTION
FM SMETERSLIDING (mV)
0
48
1500
IF2 AMPLIFIER GAIN
50dB
53dB
56dB
59dB
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