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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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TDA7421 数据表(PDF) 32 Page - STMicroelectronics |
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TDA7421 数据表(HTML) 32 Page - STMicroelectronics |
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32 / 38 page  FM SOFT MUTE / FM AUDIO MUTE GAIN (subaddress 08H) MSB LSB FUNCTION FSM3 FSM2 FSM1 FSM0 AUM2 AUM1 AUM0 fmsoftmute MSB fmsoftmute fmsoftmute fmsoftmute LSB buff1 gain MSB buff1 gain buff1 gain LSB FM SOFT MUTE THRESHOLD 0 0 0 0 Maximum sensitivity XXXX • • • 1 1 1 1 Minimum sensitivity all combinations allowed Audio max mute atten. (dB) with bit FMHIGH byte 0 = 1 0 0 1 -2.5 010 -5 1 0 0 -7.5 011 -10 110 -12.5 111 -15 Audio max mute atten. (dB) with bit FMHIGH byte 0 = 0 001 -17.5 010 -20 100 -22.5 011 -25 110 -27.5 111 -30 all else not allowed FM HOLE DETECTOR / FM DETUNING DETECTOR (subaddress 09H) MSB LSB FUNCTION BWM2 BWM1 BWM0 HDM4 HDM3 HDM2 HDM1 HDM0 BW MSB BW BW LSB Hole det MSB Hole det Hole det Hole det Hole det LSB MUTING SENSITIVITY 0 0 0 0 0 Minimum (deep hole) X XXXX • • • 1 1 1 1 1 Maximum (shallow hole) all combinations allowed RECEPTION DETUNING MUTE RANGE 0 0 1 10 (KHz) 0 1 0 15 (KHz) 1 0 0 30 (KHz) all else not allowed SEEK CLAMPING WINDOW 0 0 0 Minimal Window X X X Intermediate values 1 1 1 Maximal Window all combinations allowed TDA7421 32/38 |
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