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AN2744 데이터시트(PDF) 41 Page - STMicroelectronics |
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AN2744 데이터시트(HTML) 41 Page - STMicroelectronics |
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41 / 56 page ![]() AN2744 Board description 41/56 Figure 39. Scheme of the communication board connector B_ID_PLM_0 B_ID_PLM_0 GND B_ID_PLM_1 B_ID_PLM_1 GND VDDF_FORCE VDD VDDF CH2 BU NEG_CH2 TxD TOUT RxD REG_DATA CLRT CD/PD ZCOUT RxTx REG_OK MCLK WD RESET PG 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 CN1 CON50A P10V PLM_10V Table 7. 50-pin connector digital signals Pin n° Signal name Description Generated by 3 MCLK Oscillator output (programmable) ST7538Q 8 RESET Reset Out for microcontroller ST7538Q 11 REGOK Register OK signal ST7538Q 14 NEG_CH2 Secondary channel select (active low) µC 18 CH2 Secondary channel select (active high) µC 35 CD/PD Carrier or preamble detected signal ST7538Q 37 REG/DATA Register or Data access µC 39 RxD Serial Data Out ST7538Q 41 RxTx Reception or Transmission select signal µC 43 ZCOUT Zero-crossing detection output ST7538Q 45 CLR/T Serial Data Clock ST7538Q 46 WD Watchdog counter reset µC 47 TOUT Timeout / Thermal Protection event signal ST7538Q 48 BU Band in Use detection signal ST7538Q 49 TxD Serial Data Input µC 50 PG Power good signal ST7538Q |
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