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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7427D датащи(PDF) 7 Page - STMicroelectronics |
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TDA7427D датащи(HTML) 7 Page - STMicroelectronics |
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7 / 21 page  REGISTER NAME FUNCTION PC Programmable counter for VCO frequency RC Reference counter PLL IRC Reference counter IF IFCM IF counter mode selector EW Frequency error window IF counter IFENA Enable IFRC CF Center frequency IF counter IFS Sampling time IF counter PM Stby, FM, AM, AM swallow mode selector D Programmable delay and phase error for lock detector LPIN1/2 Loop filter input select PLLSTOP PLL stop A Charge pump high current B Charge pump low current LDENA Lock detector enable CURRH Set current high OSC Oscillator adjust DOUT1 Push pull output 5V DOUT3 Open collector output INLOCK Lock detector output Table 2. Control Register Functions. OSC IN REGISTER R0 ...R15 PREDIVIDER :R PD AM IN FM IN REGISTER PC0 ...PC4 COUNTER A PRESCALER M/M+1 REGISTER PC5 ... P15 COUNTER :B fref fsyn D95AU375A ∆ϕ TO CHARGE PUMP Figure 1. FM and AM (SW) operation (swallow mode) TDA7427 7/21 |
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