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TDA7421N Datasheet(PDF) 35 Page - STMicroelectronics |
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TDA7421N Datasheet(HTML) 35 Page - STMicroelectronics |
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35 / 38 page  35/38 TDA7421N 7.10 FM HOLE DETECTOR / FM DETUNING DETECTOR (subaddress 08H) MSB LSB FUNCTION BWM2 BWM1 BWM0 HDM4 HDM3 HDM2 HDM1 HDM0 BW Slope 30kHz BW Slope 15kHz BW Slope 10kHz Hole det MSB Hole det Hole det Hole det Hole det LSB MUTING SENSITIVITY(hole depth) 00000 Minimum (deep hole) XXXXX 11111 Maximum (shallow hole) all combinations allowed RECEPTION DETUNING MUTE RANGE (KHz) 001 10 010 15 100 30 all else not allowed SEEK CLAMPING WINDOW 0 0 X Not allowed 0 1 0 Faster Clamping Window (±1KHz over Threshold) XXX 1 1 1 Slower Clamping Window (±4KHz over Threshold) all combinations allowed 7.11 TUNER TESTING (subaddress 9H) MSB LSB FUNCTION PLL TEST T2 T1 T0 SDDIS BWDIS HDDIS SMDIS Test mode PLL Test mode MSB Test mode Test mode LSB SD output Disable Bandwid th Disable Hole detector Disable Soft Mute Disable 00000000 no test TEST MODES 1 1 0 Soft Mute Test 1 0 1 Hole Detector Test 0 1 1 Bandwidth Test 1 1 1 Audio Mute and SD Disabled all else not allowed |
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