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TDA7513 数据表(PDF) 38 Page - STMicroelectronics |
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TDA7513 数据表(HTML) 38 Page - STMicroelectronics |
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38 / 58 page ![]() TDA7513 38/58 SUBADDRESS 9: If Counter Control 2 SUBADDRESS 10: IF Counter Reference (LSB) SUBADDRESS 11: IF Counter Reference (MSB) and IF Counter Mode select MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 FM antenna adj (proportional to Vtuning) 0000 0 fcenter = 10.60625MHz (FM) 449KHz (AM) 0000 1 fcenter = 10.61250MHz (FM) 450KHz (AM) --- -- - - - - 0101 0 fcenter = 10.66875MHz (FM) 459KHz (AM) 0101 1 fcenter = 10.67500MHz (FM) 460KHz (AM) 0110 0 fcenter = 10.68125MHz (FM) 461KHz (AM) 0110 1 fcenter = 10.68750MHz (FM) 462KHz (AM) 0111 0 fcenter = 10.69375MHz (FM) 463KHz (AM) 0111 1 fcenter = 10.70000MHz (FM) 464KHz (AM) 1000 0 fcenter = 10.70625MHz (FM) 465KHz (AM) 1000 1 fcenter = 10.71250MHz (FM) 466KHz (AM) --- -- - - - - 1111 1 fcenter = 10.80000MHz (FM) 480KHz (AM) 000 tsample = 20.48ms (FM) 128ms (AM) 001 tsample = 10.24ms (FM) 64ms (AM) 010 tsample = 5.12ms (FM) 32ms (AM) 011 tsample = 2.568ms (FM) 16ms (AM) 100 tsample = 1.28ms (FM) 8ms (AM) 101 tsample = 640µs (FM) 4ms (AM) 110 tsample = 320µs (FM) 2ms (AM) 111 tsample = 160µs (FM) 1ms (AM) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 0 00000 0 LSB = 0 0 0 00000 1 LSB = 1 0 0 00001 0 LSB = 2 --- -- - - - - 1 1 11110 0 LSB = 252 1 1 11110 1 LSB = 253 1 1 11111 0 LSB = 254 1 1 11111 1 LSB = 255 MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 00000 0 MSB = 0 00000 1 MSB = 256 00001 0 MSB = 512 --- -- - - - - 11110 1 MSB = 15616 11111 0 MSB = 15872 11111 1 MSB = 16128 IF COUNTER MODE 0 0 not valid 0 1 IF counter FM mode (10.7KHz) 1 0 IF counter AM mode (450KHz) 0 0 not valid Note: 1 fOSC/fTIM = LSB + MSB + 1 |
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