TDA7421N Datasheet, PDF (30/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

TDA7421N
7.0 TUNER DATA BYTE SPECIFICATION
7.1 ADDRESS ORGANIZATION (Tuner AM/FM)
FUNCTION
MSbit
LSbit
SUBAD
B7
B6
B5
B4
B3
B2
B1
B0
STATUS
00H
N.U. FMMUTE FMADJ AM SEEK AM/FM/ AM/FM/ AM/FM/
STEREO
STBY STBY STBY
FM STOP STATION/
FM IF AGC
01H FAG2 FAG1 FAG0 FSS4 FSS3 FSS2 FSS1 FSS0
FM SMETER SLIDER/ 02H FSL4 FSL3 FSL2 FSL1 FSL0 IF2A1 IF2A0 N.U.
AM IF2 AMP
AM AGC1/AM STOP
STATION
O3H ASS3 ASS2 ASS1 ASS0 AAGN1 AAGN0 AAGW1 AAGW0
IFT1/IFT2
04H T2A3 T2A2 T2A1 T2A0 T1A3 T1A2 T1A1 T1A0
FRONT END
ADJUSTMENT
05H ANA3 ANA2 ANA1 ANA0 RFA3 RFA2 RFA1 RFA0
FM DEMOD
ADJUSTMENT
06H
N.U. DEM6 DEM5 DEM4 DEM3 DEM2 DEM1 DEM0
FM AUDIO MUTE
07H
GAIN/FM IF BUFFERS/
FM SOFT MUTE
FSM3 FSM2 FSM1 FSM0 FFBL1 FBL0 AUM1 AUM0
FM HOLE DETECTOR/ 08H
FM DETUNING
BWM2 BWM1 BWM0 HDM4 HDM3 HDM2 HDM1 HDM0
TUNER TESTING
09H PLLTEST T2
T1
T0 SDDIS BWDIS HDDID SMDIS
7.2 STATUS (subaddress 00H)
MSB
S6
S5
S4
FMMUTE FMADJ AMSTEREO
S3
SEEK
0
1
0
1
0
1
1
1
S2
AM/FM/
STBY
0
0
0
1
1
AM
AM
FM
FM
S1
AM/FM/
STBY
0
0
1
1
0
AM
AM
FM
FM
LSB
FUNCTION
S0
AM/FM/
STBY
0 Stand by
1 FM on
0 AM on (/6)
0 AM on (/10)
0 AM on (/8)
RECEPTION
SEEK
AM AM IFC Out
AM AM Stereo OUT
FM FM on for demodulator
adjustment, demod on
FM FM on for demodulator
adjustment, demod muted
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