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AS2534BF Datasheet(PDF) 3 Page - ams AG |
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AS2534BF Datasheet(HTML) 3 Page - ams AG |
3 / 26 page Data She et AS25 33-36 austriamicrosystems Revision 8.10 Page 2 of 25 Pin Description Pin # Symbol Function 4 VDD Positive Voltage Supply This is the supply pin for the circuit. 5 AGND Analog Ground This is the analogue ground for the amplifiers. 6 STB Side Tone Balance Input This is the input for side tone cancellation. 7 CI Complex Impedance Pin For complex impedance a capacitor should be connected to 8 MO Melody Output PDM output of the melody generator for tone ringing with internal open-drain transistor. Hi-Z when not active. 9 LLC Line Loss Compensation Select pin for line loss compensation (see also Figure 6 and Figure 7). LLC = AGND : 20 - 50 mA LLC = VDD : 45 - 75 mA LLC = VSS : none. 10 HS/DP Hook Switch Input and Dial Pulse Output This is an I/O that is pulled high by the hook switch when off-hook and an open drain pulls it low during break periods of pulse dialing and flash. 11 OSC OSCillator Input Pin for ceramic resonator (3.58 MHz). Reference: Murata CSTCC3M58GD3346-R0 SMD Murata CSTLS3M58GD3458-B0 Lead 12 MODE Signaling MODE Select Input Mode pin Function Open Dialing inhibited Row 1 LD mode, 10 pps, 33/66 ms Row 2 LD mode, 10 pps, 40/60 ms Row 3 LD mode, 20 pps, 33/66 ms Row 4 LD mode, 20 pps, 40/60 ms Row 5 LD mode, 10 pps, 33/66 ms, Temp. MF with tone on first * key entry Row 61 MF only, 82/82 ms Row 7 MF only, 82/160 ms During temporary MF: 82/160 ms 13 14 15 16 C4 C3 C2 C1 Keyboard Columns (see key arrangements in Figure 2, Figure 3 and Figure 4) |
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