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SA2532P Datasheet(PDF) 3 Page - Sames |
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SA2532P Datasheet(HTML) 3 Page - Sames |
3 / 21 page SA2532P 3 /21 sames sames sames sames Pin Description Pin # Symbol Function 23 24 M1 M2 Microphone Inputs Differential inputs for the microphone (electret). 3 2 RO1 RO2 Receiver Outputs These are the outputs for driving a dynamic ear piece with an impedance of 100 to 300Ohms 5AGND Analog Ground This is the analog ground for the amplifiers. 28 RI Receive Input This is the input for the receive signal. 6STB Side Tone Balance Input This is the input for side tone cancellation. 1LS Line Current Sense Input This is the input for sensing the line current. 27 LI Line Input This input is used for power extraction and line current sensing. 25 CS Current Shunt Control Output This N-channel open drain output controls the external high power shunt transistor for the modulation of the line voltage and for shorting the line during make period of pulse dialling. 4VDD Positive Voltage Supply This is the supply pin for the circuit. 26 VSS Negative Power Supply 8MO Melody Output Pulse Density Modulated output of the melody generator for tone ringer. At high impedance when not active. 21 FCI Frequency Comparator Input This is a Schmitt trigger input for ring frequency discrimination. Disabled during off-hook. 10 HS/DPB Hook Switch Input and Dial Pulse Output This is an I/O that is pulled high by the hook switch when off- hook. An open drain pulls it low during break periods of pulse dialling and flash. 11 OSC Oscillator Input Oscillator pin for Xtal or ceramic resonator (3.58 Mhz). Recommended : Murata CSA 3.58MG312AM 12 RR Repetition Rate. Select pin for the repetition rate of the tone ringer’s melody output. 9 LLC Line Loss Compensation. Select pin for the line loss compensation: Open None Low 20-50mA High 45-75mA |
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