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TDA7513 数据表(PDF) 44 Page - STMicroelectronics |
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TDA7513 数据表(HTML) 44 Page - STMicroelectronics |
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44 / 58 page ![]() TDA7513 44/58 SUBADDRESS 22: FM Smeter Sider and AM Smeter Time Constant SUBADDRESS 23: IFT Adjust SUBADDRESS 24: XTAL and FM IF AMP 2 Gain MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 FM Smeter Sider 00 00 0 0V 0 0 0 0 1 0.48V -- -- - - 1 1 1 1 0 1.45V 11 11 1 1.5V AM Smeter Filter TC (resistor value) 00 0 75K Ω 10 0 50K Ω 01 0 35K Ω 11 0 24K Ω 00 1 16K Ω MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 IFT1 Adjust 00 00 0pF 0 0 0 1 0.55pF -- -- - 0 1 1 1 7.7pF 1 1 1 1 8.25pF IFT2 Adjust 00 00 75pF 10 00 50pF -- -- - 0 1 1 1 22.4pF 11 11 24pF MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 XTAL adjust Cload 00 00 0 0pF 0 0 0 0 1 0.625pF 0 0 0 1 0 1.25pF 0 0 1 0 0 2.5pF 01 00 0 5pF 00 10 0 10pF 0 1 0 0 0 10.4pF XTAL TEST) 0 xtal clock 1 clocksep (testing) FM IF Amp2 Gain 0 0 6dB 0 1 8dB 1 0 10dB 1 1 not used |
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