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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7786 датащи(PDF) 41 Page - STMicroelectronics |
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TDA7786 датащи(HTML) 41 Page - STMicroelectronics |
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41 / 54 page  DocID026122 Rev 5 41/54 TDA7786, TDA7786M Front-end registers 53 4 Front-end registers All the parameters in this section refer to the programmability of the FE part of the device (registers). The part of the registers that are not described here have either fixed values or values written by the tuner drivers, and are described in the proper technical documentation. Table 31. Register 0x00 Register number Register definition MSB LSB 23 22 21 20 19 18 17 16 15 14 13 12 11 10 987 6543 210 AM mixer input selector 0 1 Input #1 1 0 Input #2 AM PIN diode 0 Internal 1 External AM AGC mode 0 LNA and PIN diode 1 PIN diode only AM AGC time constant 0 0 Slow (125 ms with 1 µF) 0 1 Medium (25ms with 1 µF) 1 1 Fast (5ms with 1 µF) AM AGC thresholds @ mixin 0 0 0 90.2 dBµV @ mixin 0 0 1 92.0 dBµV @ mixin 0 1 0 93.8 dBµV @ mixin 0 1 1 95.6 dBµV @ mixin 1 0 0 88.4 dBµV @ mixin 1 0 1 86.6 dBµV @ mixin 1 1 0 84.8 dBµV @ mixin 1 1 1 83 dBµV @ mixin AM AGC attack time constant 0 Normal 1 Fast |
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