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TS7514 Fiches technique(PDF) 2 Page - STMicroelectronics |
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TS7514 Fiches technique(HTML) 2 Page - STMicroelectronics |
2 / 19 page PIN DESCRIPTION Name Pin Number Description DIP24 PLCC28 MOD/DMTF 1 1 MODEM or DMTF Operating Mode Selection. Also controls write operations to control registers (if MOD/DMTF = 0 and MC/BC = 0). MC/BC 2 3 Digital Control Input. In MODEM mode, it sets transmission mode to main or back channel. It also permits selection of dialing or control registers programming. RTS 3 4 Request to Send. When RTS = 0, the circuit sends an analog signal to the ATO output. The signal depends on the operating mode selected. When RTS = 1, the signal sent to ATO is suppressed after its first zero crossing. When MOD/DMTF = 0 and MC/BC = 0, the RTS pin acts as a clock for serial data loading into the input register. ENP 4 5 Serial Register Write Select Input. When ENP = 0, the serial register input is connected to TxD. When ENP = 1, the register input is connected to PRD. DGND 5 6 Digital Ground = 0V. All digital signals are referenced to this pin. TxD 6 7 Digital Input for Transmit or Control Data PRD 7 8 Digital Input for Control Data. Selected through ENP XtaIIN 8 10 Crystal Oscillator Input. Can be tied to an external clock generator. fQUARTZ = 3.579MHz. XtaIOUT 9 11 Crystal Oscillator Output DCD 10 13 Data Carrier Detect Output RxD 11 14 Digital Receive Data Output ZCO 12 15 Zero Crossing Rx Digital Output (ringing detection) RDI 13 16 Analog Output for the Receive Signal after Filtering or Analog Input for the Amplifier-limiter. RFO 14 17 Analog Receive Filter Output RAO2 15 18 A2 Amplifier Output RAI2 16 20 A2 Amplifier Inverting Input RAI1 17 21 A1 Amplifier Inverting Input RAO1 18 22 A1 Amplifier Output V- 19 23 Negative Supply Voltage : – 5V ±5% AGND 20 24 Analog Ground = 0 V. Reference Pin for Analog Signals V+ 21 25 Positive Supply Voltage : + 5V ±5% ATO 22 26 Analog Transmit Output WLO 23 27 Analog Output for Line Monitoring and Buzzer ATxI 24 28 Direct Analog Input Transmit Filter TS7514 2/19 |
Numéro de pièce similaire - TS7514 |
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Description similaire - TS7514 |
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